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ASEE Engineering Case Library

This is the American Society for Engineering Education (ASEE) Engineering Case Library (ECL). The cases are accounts of real engineering work written for use in engineering education.The Engineering Case Program originated at Stanford University in 1964 with the support of the National Science Foundation. The library has been maintained by Rose-Hulman Institute of Technology and Carleton University. It continues under the sponsorship of the Design in Engineering Education Division (DEED) of the ...



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ASEE Engineering Case Library
by Aaron Baumgarten
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An experienced mechanical engineer was asked to design a smooth reliable drive to oscillate a long slender induction coil gently and continuously. The coil serves as a precision control element in a large linear accelerator. Part A of the case consists of an account of the first and second designs. Part B is a brief account of a difficulty which occurred several months later. An Instructor's Note is included. This case study is part of the American Society for Engineering Education (ASEE)...
Topics: Discipline: Mechanical, Area: Analysis, Area: Computer, Area: Design and Development, Assignment:...
ASEE Engineering Case Library
by Geza Kardos
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The collapse of the Heron Road Bridge presents an excellent opportunity to impress upon the student the legal and ethical responsibilities required of the professional engineer. Part A narrates the tragedy by means of newspaper accounts and editorial comments. Part B is from the expert's report on the bridge failure. Part C describes the proceedings of the Coroner's Inquest and excerpts some of the more important and revealing testimony. Part D summarizes actions resulting from the...
Topics: Discipline: Civil, Area: Analysis, Area: Legal and Ethics, Area: Management, Assignment: Analysis,...
ASEE Engineering Case Library
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A hearing on the Air Force A-7D Brake Problem was conducted from 9:30 a.m. to 1:05 p.m. on 13 August 1969 under the chairmanship of Senator Proxmire. It was the result of accusations by two employees who claimed that the Goodrich Company had coerced them to change test records so that an unsatisfactory brake could be qualified for flight tests. The transcript of the hearing is available from the U.S. Government Printing Office, Washington, D.C. This case brings excerpts from the transcript,...
Topics: Discipline: Aero and Astro, Area: Legal and Ethics, Assignment: Discussion
ASEE Engineering Case Library
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The design of a miniature compressor, its development through a number of prototypes, feasibility models and preproduction units and eventual successful marketing of the product are the subjects in this case in 3 parts: Part A, Invention; Part B, Development,; Part C, Industrial Design. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at...
Topics: Discipline: Mechanical, Discipline: Other, Area: Design and Development, Area: Inventions, Area:...
History of a product from inception to large-scale use. Told by main customer and chief engineer. Includes samples of engineering reports, patents, drawings, and suggested assignment problems for students. Part of the ASEE Engineering Case Library, which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in 1964 with the support of the National Science Foundation. It continues under the sponsorship of the American society for...
Topics: Discipline: Mechanical, Area: Design and Development, Area: Graphics, Area: Heat and Flow, Area:...
ASEE Engineering Case Library
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When Andrew Lawrence, graduate engineer, was at loose ends about 1940, he got into the business of designing and manufacturing a superior air pistol which was then marketed by his brother who was in the sporting goods import business. He recollects this experience in this case. Instructor's Note is included. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case...
Topics: Discipline: Other, Area: Analysis, Area: Design and Development, Area: Heat and Flow, Area:...
The spectacular failures of many welded ships during the early years of World War II created a major engineering emergency. The failures involved the loss of both ships and lives, at a cost to the United States of $50 million. Approximately 5, 000 welded merchant ships were constructed; of these, over 1,000 suffered cracks in varying degrees. Some 190 ships sustained serious fractures. A dozen broke completely in two. In April 1943 the Secretary of the Navy appointed a "Board to...
Topics: Discipline: Materials, Area: History, Assignment: Discussion
ASEE Engineering Case Library
by J.E. Arnold; G.H. Wood
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State-of-the-art in hospital beds, presenting background data on hospital beds as source material for student design projects. Students are to ferret out their own problems and then develop solutions. Part of the ASEE Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in 1964 with the support of the National Science Foundation. It continues under the sponsorship of the American Society for...
Topics: Discipline: Other, Area: Design and Development, Assignment: Design, Assignment: Invention
ASEE Engineering Case Library
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In 1958 Mr. Howard Ameson, rather fortuitously, cam across an idea for a device to clean swimming pools automatically. To pursue this idea further, he started a tiny company with $8,000 in 1960. By 1965 the device was in production and in 1969 his company had sales exceeding six million dollars. Mr. Ameson how heads the company he sold to Castle and Cooke Inc. for 9 million dollars in 1969. The case tells Mr. Arnson's story. This case study is part of the American Society for Engineering...
Topics: Discipline: Materials, Discipline: Mechanical, Discipline: Other, Area: Design and Development,...
ASEE Engineering Case Library
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To increase the range of a twin engine airplane, extra fuel tanks must be designed and integrated with other systems. The project involves activities ranging from drafting and cost estimation, to vibration testing and lightning strike tests. Doug Marwill and two other engineers at Beechcraft spent about a year on the modification; they deal with vendors and subcontractors, as well as with the Federal Aviation Administration. The case is suitable for introductory and lower level courses in...
Topics: Discipline: Aero and Astro, Discipline: Electrical, Discipline: Mechanical, Area: Design and...
This study recounts the approach taken and the problems which arose in the design, construction, and testing of a 900 pound displacement submarine propelled by Lorentz electromagnetic forces in the surrounding sea. This project was carried out by a group of eight senior mechanical engineering students under the direction of the writer at the University of California at Santa Barbara in 1966. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case...
Topics: Discipline: Other, Area: Analysis, Area: Design and Development, Assignment: Discussion
ASEE Engineering Case Library
by G. Kardos
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John Smeaton and Fred Fassbender used their experience as a design and management team at Hus-ski Ltd. to found a company, Nortrac, Ltd., to undertake the development, manufacturing and marketing of the Snotruk. The final design was accomplished through a process of design, analysis, testing, and more analysis of four prototypes. The case is in four parts: Part A, Conception; Part B, Basic Design and Development; Part C, Component Design and Development; Part D, Production. This case study is...
Topics: Discipline: Mechanical, Area: Design and Development, Area: Management, Assignment: Design,...
ASEE Engineering Case Library
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A vehicle consisting of two primary components free to perform relative rotations about a common bearing axis is called a "dual- spin" vehicle, and the idea of stabilizing such a vehicle by spinning one part (the "rotor") while the other part (the "despun platform") rotates more slowly or not at all is called the dual- spin attitude stabilization concept. This case study describes the evolution of this concept from early rejection to current pre- eminence among...
Topics: Discipline: Aero and Astro, Area: Analysis, Area: Inventions, Assignment: Analysis, Assignment:...
ASEE Engineering Case Library
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A history drawn from published sources including quotations of Orville Wright taken from a deposition he gave as a witness in a 1920 lawsuit. Intended for introducing freshmen to engineering design. Part of the ASEE Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in 1964 with the support of the National Science Foundation. It continues under the sponsorship of the American Society for...
Topics: Discipline: Aero and Astro, Area: Analysis, Area: Computer, Area: History, Area: Inventions,...
ASEE Engineering Case Library
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In 1963 Earl A. Thompson received the Sperry Award for the development of the automatic transmission at General Motors. The case discusses a parallel development at General Motors by J.O. Almen, predating the work of Thompson which critically affected the success of that development. Shifting management priorities are presented which meant the success of one and not the other. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which...
Topics: Discipline: Mechanical, Area: Design and Development, Area: Inventions, Assignment: Discussion,...
ASEE Engineering Case Library
by C.O. Smith
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A look at the problem of developing standards that are nationally recognized and accepted. The portable metal ladder is used as an example. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in 1964 with the support of the National Science Foundation. The catalog was maintained by Rose-Hulman Institute of Technology...
Topics: Discipline: Civil, Discipline: Mechanical, Area: Analysis, Area: Design and Development, Area:...
ASEE Engineering Case Library
by American Society for Engineering Education
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This 300mb zip file contains the complete Engineering Case Library (ECL) from the American Society for Engineering Education (ASEE). The collection has over 250 case studies.  The Engineering Case Program originated at Stanford University in 1964 with the support of the National Science Foundation. It continues under the sponsorship of the ASEE. The ASEE Case Study Committee under the Design in Engineering Education Division (DEED) of ASEE, ASEE Headquarters and Rose-Hulman Institute of...
Topics: engineering, case study, engineering education, design
ASEE Engineering Case Library
by J.G. Gibson
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A 2800 pound sourcehead of a radiation teletherapy device fell suddenly and fatally injured a patient. Was this accident caused by defective mechanical design, inadequate maintenance, improper operation, or some combination of the above? This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in 1964 with the support of the...
Topics: Discipline: Mechanical, Discipline: Other, Area: Design and Development, Area: Legal and Ethics,...
ASEE Engineering Case Library
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In this case study in construction engineering, Dan Jeffrey, a young civil engineer, on this first field assignment for the Bethlehem Steel Corporation, explains the decisions he must make in determining the safety of storing steel on a partially completed floor of a new building. Instructor's note is included. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering...
Topics: Discipline: Civil, Area: Analysis, Area: Management, Assignment: Analysis, Assignment: Discussion
ASEE Engineering Case Library
by Richard Thompson; Robert Wickham
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The case documents the design and development of the "Imp," a small air driven impact wrench intended for "under the hood" use by auto mechanics. Part A focuses on the preliminary design of the tool; an appendix to this section describes in detail the operation of the impacting mechanism which proved to be the most difficult component of the "imp" to develop. Part B tells how a prototype of the tool was tested and how the engineer in charge of the testing procedure...
Topics: Discipline: Mechanical, Area: Design and Development, Assignment: Analysis, Assignment: Design,...
ASEE Engineering Case Library
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This case documents the analysis made by H. Aass Aero Engineering to ensure that the installation of Crop Spraying Boom in lieu of Atomizer Spray System on Cessna 185 aircraft complied with MOT requirements. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in 1964 with the support of the National Science Foundation....
Topics: Discipline: Aero and Astro, Discipline: Mechanical, Area: Graphics, Assignment: Analysis,...
ASEE Engineering Case Library
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Taken from published sources plus interviews with former engineers of the project, this historical description was prepared to illustrate engineering design and its role in society for a freshman. Part of the ASEE Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in 1964 with the support of the National Science Foundation. It continues under the sponsorship of the American Society for Engineering...
Topics: Discipline: Civil, Discipline: Electrical, Area: Analysis, Area: History, Area: Legal and Ethics,...
ASEE Engineering Case Library
by John Tarkov
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It took only fifteen seconds for the massive south arm of the Quebec Bridge to fall into the St. Lawrence River in 1907, but the prelude to the catastrophe began years before. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in 1964 with the support of the National Science Foundation. The catalog was maintained by...
Topics: Discipline: Civil, Discipline: Other, Area: History, Area: Legal and Ethics, Assignment: Discussion
ASEE Engineering Case Library
by R.K. Pefley; O. Baskind; N.Y.N. Chu; J.A. Palomo; J.F. Rollings
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Four students learned about one of the many difficulties which beset the start-up of the San Francisco Bay Area Rapid Transit system. They relate what they learned from interviews and add their comments and evaluation. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in 1964 with the support of the National Science...
Topics: Discipline: Electrical, Area: History, Area: Legal and Ethics, Assignment: Discussion
ASEE Engineering Case Library
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Large tunnels are being bored under Melbourne for the city's new underground railway. Another tunnel is being constructed to carry sewage to the city's latest sewage treatment plant. The tunnel- boring operations have revealed a lack of knowledge about the forces generated when cutting through various rock strata. A programs of research into the mechanics of rock-cutting is therefore underway at the university of Melbourne, and the researcher Gray Bailey, is designing a machine for his...
Topics: Discipline: Mechanical, Discipline: Other, Area: Analysis, Area: Design and Development,...
ASEE Engineering Case Library
by Henry O. Fuchs; William H. Clemens
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Mr. Jim Hall, designer and driver of the famous Chaparral race car, gave a talk shortly after reports of bolt failures on his car had appeared in the press. He was asked about these bolt failures. His explanation of the failures and of the way he fixed them are given in the case, together with some additional information. Part of the ASEE Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in 1964...
Topics: Discipline: Mechanical, Area: Design and Development, Assignment: Analysis, Assignment: Design,...
ASEE Engineering Case Library
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Peter Sawchuck is required to design a two-speed gear box for a cold rolling mill coiler. He undertakes the design of a one-off unit that will satisfy the requirements. The basic gear design is governed by AGMA specs, but the remaining components are governed by reliability and economic considerations. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program...
Topics: Discipline: Materials, Discipline: Mechanical, Discipline: Production, Area: Analysis, Area: Design...
ASEE Engineering Case Library
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This case describes the problems encountered in testing a new concept for a forage blower design and the eventual successful completion of the project despite abandonment of the original concept. In Part A the need for the project, the company situation, and the new concept are described. Part B describes some analytical and experimental work which was done to aid forage blower designers. Part C reports the results of experiments and in Part D International Harvester's eventual production...
Topics: Discipline: Agriculture, Discipline: Mechanical, Area: Design and Development, Area: Heat and Flow,...
ASEE Engineering Case Library
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In the first of two parts a company engineer is asked to redesign a tape label dispenser so it can handle two different widths of tape. The second part then goes on to tell how he did the job. An instructor's note is available. Part of the ASEE Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in 1964 with the support of the National Science Foundation. It continues under the sponsorship of the...
Topics: Discipline: Mechanical, Area: Design and Development, Area: Inventions, Area: Management,...
William Shockley tells how he and his associates conceived and developed the junction transistor for which he, J. Bardeen and W. Brattain, were awarded a Nobel Prize in 1956. He emphasizes the importance of creative failure and of the will to think. He "hopes that the presentation of details of his limitations in making this important invention may help readers to accept their own limitations and, thereby, to become more persistent and, hence, creative." This case study is part of the...
Topics: Discipline: Electrical, Area: History, Area: Inventions, Assignment: Discussion
ASEE Engineering Case Library
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In nuclear poser plants, the level of energy release is governed by large paddle-shaped blades which are inserted into scabbards buried in an atomic pile. The blades are inserted or withdrawn by Control Rod Drive Mechanisms which are controlled by a central control system. This case discusses a critical detail which had to revised several times to meet stringent safety requirements. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL),...
Topics: Discipline: Mechanical, Area: Design and Development, Area: Legal and Ethics, Assignment: Design,...
ASEE Engineering Case Library
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Jack Wireman, a mechanical engineer in this real company, is faced with bearing failure in a new electric motor. A sequence of five separate sub-cases traces his adventures as he tries a heavier bearing on the recommendation of the bearing manufacturer, and it fails sooner than the first. An expert is engaged and disagrees with the bearing company. A second consultant offers completely different recommendation. Time is running out, and the customer is impatient for delivery. Part of the ASEE...
Topics: Discipline: Aero and Astro, Discipline: Mechanical, Area: Analysis, Area: Graphics, Area: Heat and...
ASEE Engineering Case Library
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Part of the ASEE Engineering Case Library (ECL), which can be downloaded in full as a <a href=ECL-zip>300mb zip file</a>. The Engineering Case Program originated at Stanford University in 1964 with the support of the National Science Foundation. It continues under the sponsorship of the American Society for Engineering Education (ASEE).
Topics: Discipline: Other, Area: Other, Assignment: Discussion
ASEE Engineering Case Library
by John E. Arnold
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This is John E. Arnold’s first case to use an other-worldly, science-fictional format. It was intended to force his design students to think more imaginatively about product design solutions.
Topics: arnold, john e, case study, ecl, arcturus, ion, ceres, zylerium, chinese, typewriter
ASEE Engineering Case Library
by K.H. Vesper; E.J. Echterling
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The first of two parts describes the need for sketching possible fuselage configurations for a new light observation helicopter. The second part tells how the craft was designed by the company to win competition for a large Army contract. A brief instructor's note presents a viewpoint regarding what can be learned from the experience. Part of the ASEE Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford...
Topics: Discipline: Aero and Astro, Area: Design and Development, Area: Management, Assignment: Design,...
ASEE Engineering Case Library
by K.H. Vesper; J.K. Williams
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Part A presents background in processed rice. Part B gives the concept selected by the company, carrying the story to the point where layout of a specific design is needed. Part C describes some problems which arose in the first machine. Part D tells how an FMC engineer went at the problems. (A) Need for a Rice Sorter (B) Rice Sorter Layout (C) Mechanical Failures in a Rice Sorter (D) Rice Sorter Redesign Part of the ASEE Engineering Case Library (ECL), which can be downloaded in full as a...
Topics: Discipline: Agriculture, Discipline: Mechanical, Discipline: Other, Area: Design and Development,...
ASEE Engineering Case Library
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Two system planning engineers solve the problem of specifying acceptable current loadings on a power company's high voltage transmission lines. Specifying the problem's unique features due to the company's line designs and area weather conditions making clear all assumptions, and reaching compromises between benefits of increased loadings and costs of line losses-these steps are shown in this case study and can be adapted to solving many other engineering problems. The case illustrates also the...
Topics: Discipline: Electrical, Area: Analysis, Area: Heat and Flow, Assignment: Analysis, Assignment:...
ASEE Engineering Case Library
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When the Titan missile was considered as a booster for manned spacecraft, a severe problem of longitudinal oscillations up to 5 g's was encountered. The cause and cure of this oscillation were unknown. After 3 million dollars worth of study of this "Pogo bounce" it was identified as a coupled oscillation between the structure and the propulsion system. The case relates the background, develops the systems analysis, and ends with notes for the instructor, incorporated with the case....
Topics: Discipline: Aero and Astro, Discipline: Mechanical, Area: Analysis, Assignment: Analysis,...
ASEE Engineering Case Library
by William H. Clemens
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Roy Kaylor is in the process of designing a solid-state, three- phase laboratory power supply to be marketed by his firm, Advanced Energy Conversion. One of the principal components of the power supply is a switching regulator which employs an integrated circuit to provided a constant output voltage. In this switching regulator a transformer is used to "couple" two circuits together while providing voltage isolation between them. The case focuses upon Kaylor's attempt to...
Topics: Discipline: Electrical, Area: Analysis, Area: Design and Development, Assignment: Analysis,...
ASEE Engineering Case Library
by Karl H. Otte; Otto E. Widers
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Early in 1965 the Arctic Sciences and Technology Division of the U.S. Navy Electronics Laboratory at San Diego, California, asked Chicago Bridge and Iron Company to bid on the design and fabrication of a seawater experimental test chamber. The vertically standing test chamber was to be used by the Laboratory to conduct experiments simulating deep arctic sea conditions. The vessel was to be of cylindrical construction with an inside diameter of 50 to 60 inches and a working length of 120 inches....
Topics: Discipline: Civil, Discipline: Materials, Discipline: Mechanical, Area: Analysis, Area: Design and...
ASEE Engineering Case Library
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Chief Engineer Tyler wants to know more exact details about the transient torque-speed curve of his motors. He designs a circuit to measure it and asks electronic designer Bencsics to review the design and build a prototype. Part A defines the problem. Part B shows Bencsics' calculations and circuits. Part C relates experience in building and changing the prototype. In Part D we see an unexpected result and read about Tyler's view of the project and of its future. This case study is part of the...
Topics: Discipline: Electrical, Area: Analysis, Area: Design and Development, Area: Management, Assignment:...
ASEE Engineering Case Library
by J.E. Arnold
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Illustrates the state-of-the-art in boxcar construction, giving dimensional and other data on the cars and suggesting some disadvantages which may suggest a variety of possible design projects by students. Part of the ASEE Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in 1964 with the support of the National Science Foundation. It continues under the sponsorship of the American Society for...
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Topics: Discipline: Mechanical, Area: Design and Development, Area: Inventions, Assignment: Design,...
ASEE Engineering Case Library
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On October 23, 1985 a helicopter crashed while on test near Edmonton, killing the two pilots on board. Diane Rocheleau is asked to investigate the fracture and failure of the rotor collective sleeve to determine if it was the cause of the helicopter accident. She would spend approximately 240 hours on the project, examining the fracture, carrying out tests and preparing a report. Her knowledge of fracture mechanics became the clue to unravelling the mystery. Four pages of instructors notes...
Topics: Discipline: Aero and Astro, Discipline: Materials, Discipline: Mechanical, Area: Analysis, Area:...
ASEE Engineering Case Library
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"We spent the first three weeks of March 1996 trying to debug the system," said Keith, "but nothing we tried seemed to work. If we got the picture to focus, we couldn't get rid of the 'pincushion.' When we straightened out the 'pincushion,' we lost the focus again....We were up a blind alley. I wanted to try another approach." Mr. Keith McFarland, an electrical engineer in the Link Group of General Precision Corporation, was talking about Jet Propulsion Laboratory's Video...
Topics: Discipline: Electrical, Discipline: Other, Area: Design and Development, Assignment: Discussion
ASEE Engineering Case Library
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A short elementary monograph by Professor Den Hartog on the special properties of a pendulum tuned to a period of eighty-four minutes and on the application of this device to navigation gyroscopes. Thirteen problems related to this pendulum are stated. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in 1964 with the...
Topics: Discipline: Aero and Astro, Discipline: Mechanical, Area: Analysis, Area: History, Area:...
ASEE Engineering Case Library
by B. Roth; K.H. Vesper
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A series of sub-cases describing punched cards and existing machines for punching them leads up to the problem of designing a new machine to operate on the frontier of maximum mechanical speed. Intended as background for a term project in design to acquaint the student with the main aspects of the problem and proven practices so he can proceed with his own design with a minimum of introductory time. 2 Note on Punched Cards 3(A) IBM and the Computer Industry 4(B) Making the IBM 514 Card Punch Go...
Topics: Discipline: Mechanical, Area: Design and Development, Area: Inventions, Assignment: Design,...
ASEE Engineering Case Library
by Geza Kardos
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Bob Vago had the job to quickly produce a prototype of an improved Moving Map Display. This is a complex device which automatically shows position and heading of a plane on a map which moves as the plane flies. Optical, electrical, and mechanical subsystems are used. Bob's company originally intended to use a British license and American technology, but later decided to proceed to a novel design. Within a year a prototype was delivered. Four years later production models were sold. Part A gives...
Topics: Discipline: Aero and Astro, Area: Design and Development, Area: Management, Assignment: Design,...
ASEE Engineering Case Library
by J.A. Alic
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The mechanical design of the surface sampler or soil scoop for the Viking mission to mars faced many uncertainties concerning the operating environment on Mars and the characteristic of the soil or rocks which the sampler would have to pick up. As a result, many difficult decisions had to be made by the project team during the course of the design and development effort. Conceptual design, engineering analysis, prototype construction and testing, and evaluation of alternatives were important...
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Topics: Discipline: Aero and Astro, Discipline: Materials, Discipline: Mechanical, Area: Analysis, Area:...
ASEE Engineering Case Library
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Leonard Anderson is an engineer at a small manufacturing company employing handicapped workers. He is asked to design and implement modifications to a commercially available tube beading machine so that Pat K., a young man afflicted with cerebral palsy, can operate it. Making use of tests and observations of Pat's capabilities. Leonard modifies the machine so that Pat can achieve the required production rate and become a regular employee. The case includes instructions at the end of each...
Topics: Discipline: Mechanical, Discipline: Other, Area: Design and Development, Area: Inventions,...
ASEE Engineering Case Library
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The Linde Company has in service a 600,000 gallon reservoir for liquid oxygen. This was the successful culmination of over four years of pioneering effort which involved the interaction and cooperation of many persons. The case, in two parts, describes the engineering problems and tells how they were overcome. Instructor's note included. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip...
Topics: Discipline: Civil, Area: Analysis, Area: Design and Development, Area: Inventions, Area:...
ASEE Engineering Case Library
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Westscope was one of the companies which was requested to quote on a ball transfer unit for the cargo system on the Boeing 747. This case describes the development of a suitable unit at Westscope. The case is written in three parts, each part describing a different phase of the design development. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program...
Topics: Discipline: Aero and Astro, Discipline: Mechanical, Area: Design and Development, Area: Legal and...
ASEE Engineering Case Library
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This short case describes design of a capstan shaft, which must operate smoothly in a precision tape recorder, stopping at the point where bearings must be selected. It also explains how the engineer on the job designed the bearings and, in particular, how he solved problems of lubrication. Part of the ASEE Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in 1964 with the support of the National...
Topics: Discipline: Mechanical, Area: Design and Development, Assignment: Discussion
ASEE Engineering Case Library
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Professor Kroon describes the analytical and experimental work which was done in order to overcome the catastrophic failures of impulse turbine blades which occurred in the 1930's. The case deals with failure under combined intermittent stresses, experimental and theoretical vibration analysis, and with a number of design modifications which were used to overcome the problem. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which...
Topics: Discipline: Mechanical, Area: Analysis, Area: Design and Development, Assignment: Analysis,...
ASEE Engineering Case Library
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A series of short cases of one and two pages each, covering a variety of topics in manufacturing processes including casting, forging, welding, and machining. Each case contains one or more suggested questions for assignment. Part of the ASEE Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in 1964 with the support of the National Science Foundation. It continues under the sponsorship of the...
Topics: Discipline: Production, Area: Analysis, Area: Design and Development, Assignment: Analysis,...
ASEE Engineering Case Library
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Kobe Inc. manufactures a positive displacement type triplex pump which is used in their hydraulic oil well pumping system. To achieve reliability in these pumps, which must operate continuously at high pressures (up to 30,000 psi.), Kobe engineers must continually refine their design. As an example of such refinement, this case follows the development of the pump plunger and liner over a period of 24 years. Part of the ASEE Engineering Case Library (ECL), which can be downloaded in full as a...
Topics: Discipline: Mechanical, Discipline: Production, Area: Design and Development, Area: Graphics, Area:...
ASEE Engineering Case Library
by Geza Kardos
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The development of farm machinery requires a great deal of testing and ingenuity. This case illustrates how the International Harvester Company went about updating one of its product line. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in 1964 with the support of the National Science Foundation. It continues under...
Topics: Discipline: Agriculture, Discipline: Materials, Discipline: Mechanical, Discipline: Production,...
ASEE Engineering Case Library
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This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a <a href=“https://archive.org/details/ECL-zip”>300mb zip file</a>. The Engineering Case Program originated at Stanford University in 1964 with the support of the National Science Foundation. The catalog was maintained by Rose-Hulman Institute of Technology and Carleton University. It continues under the sponsorship...
Topic: Discipline: Mechanical
ASEE Engineering Case Library
by P.Z. Bulkeley; R.D. Regier
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A letter has been received from a Colombian missionary expressing need for a lightweight portable machine for cutting logs into boards at stump site. Case intended to launch students into design projects of their own with minimal time wasted. Information on conventional sawmill practices and existing machinery plus some words of advice from experienced sawmill equipment designers are included. Part of the ASEE Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file ....
Topics: Discipline: Agriculture, Discipline: Mechanical, Area: Design and Development, Area: Inventions,...
ASEE Engineering Case Library
by John E. Arnold
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The original 1953 case study has been digitized, paginate, made fully searchable, with a Table of Contents and Table of Figures, indices, with an introduction by John E. Arnold, Jr. (2016). Two articles by John E. Arnold (1952, 1953) on the case study are included in the appendices.
Topics: arnold, john e, case study, ecl, arcturus, ion, ceres, zylerium, chinese, typewriter, sick room,...
ASEE Engineering Case Library
by Prem C. Garg; P. Z. Bulkeley
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This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in 1964 with the support of the National Science Foundation. It continues under the sponsorship of the ASEE.
Topic: Discipline: Other
ASEE Engineering Case Library
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A worker suffered a serious hand injury when he was cleaning out a trim blower. Was he just careless or is the manufacturer of the blower guilty of producing a defective design? Was the equipment placed in service with inadequate warnings? This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in 1964 with the support of...
Topics: Discipline: Mechanical, Area: Design and Development, Area: Legal and Ethics, Assignment: Design,...
ASEE Engineering Case Library
by R.H. McKim; J.K. Williams
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An industrial design consultant, Robert H. McKim, has been asked to redesign a device for measuring blood clotting time (prothrometer), to improve its ease of assembly, ease of operation, and appearance. The case is intended to give students practice in asking questions. It comes with a selection of additional handouts and with an Instructor's Note to respond to student questions asked about the general problems stated in this case. Part of the ASEE Engineering Case Library (ECL), which can be...
Topics: Discipline: Other, Area: Design and Development, Assignment: Design, Assignment: Discussion,...
ASEE Engineering Case Library
by A.P. Shack; G. Kardos
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Bob Mawhinney recalls the invention and development of a riot- control weapon which shoots a non- lethal spin stabilized bean bag. Part A gives the background feasibility calculations. Part B relates development of a cartridge suitable for military use. Part C shows how a complete system suitable for civilian use was developed. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file ....
Topics: Discipline: Mechanical, Area: Analysis, Area: Design and Development, Area: Inventions, Area: Legal...
ASEE Engineering Case Library
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A description of the development of cellular radio, a system which uses small geographic units called "cells" with low-power radio frequency transmissions instead of the high-powered wide-range transmissions currently used in most mobile communications. The cellular radio system developed for the Chicago area is traced through its inception at Bell Laboratories, licensing by the FCC, and commercial service testing. This case study is part of the American Society for Engineering...
Topics: Discipline: Electrical, Area: Computer, Area: Design and Development, Area: Inventions, Area: Legal...
ASEE Engineering Case Library
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Need for expansion of a large and fairly complex facility for mixing solid rocket fuel has raised a variety of engineering problems which are presented in three sections of the case. The first concerns decision among three specific alternatives for general design of the expansion. The second concerns selection of a heat exchanger, and the third concerns selection of a pump to move the mix. Part of the ASEE Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The...
Topics: Discipline: Mechanical, Area: Heat and Flow, Area: Management, Assignment: Analysis, Assignment:...
ASEE Engineering Case Library
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James Watt was more than just an inventor. Watt's discoveries were remarkable as they came in a period when a satisfactory theory of heat was still a generation away. Watt's genius lies in combining experimental science with practical application. His discovery of the condenser which made the industrial revolution possible is a classical example of the scientific method. This story is told in the words of James Watt himself, and his companion of that period, Professor Robison. This case study...
Topics: Discipline: Mechanical, Area: Analysis, Area: Design and Development, Area: Heat and Flow, Area:...
ASEE Engineering Case Library
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A series of short cases of one and two pages each, covering a variety of topics in manufacturing processes including foundry, welding, punch press, machining, plating, and management. Each case contains one or more suggested questions for assignment. Part of the ASEE Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in 1964 with the support of the National Science Foundation. It continues under...
Topics: Discipline: Production, Area: Analysis, Area: Design and Development, Assignment: Analysis,...
ASEE Engineering Case Library
by Geza Kardos
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This case tells of an unusual application of the engineering method, the location of a missing bullet in a police case. The construction of the case is to show and to lead the student through the solution as carried out by Jorgen Vindum, the principal investigator. The case is divided into three parts: each section ends at a critical decision point and students can be asked to discuss the course of action to be followed. The case involves a mixture of technology, computer application,...
Topics: Discipline: Other, Area: Analysis, Area: Legal and Ethics, Assignment: Analysis, Assignment:...
ASEE Engineering Case Library
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This case provides a brief look at the methodology of Value Engineering. A leveling screw for the IBM 1311 disk storage drive was assigned to students in an IBM Value Engineering Seminar. The students applied their newly learned techniques to redesign the levelling screw to reduce cost while maintaining function. Their solution was so successful that it was put into production on many IBM systems resulting in over one million dollars in savings. This case study is part of the American Society...
Topics: Discipline: Mechanical, Area: Design and Development, Area: Management, Assignment: Discussion
ASEE Engineering Case Library
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This case describes the efforts of Duke Power Company to obtain an operating license for a nuclear power plant in the aftermath of the Three Mile Island accident. Particular focus is placed on the difficulties encountered in meeting NRC's new design requirements for control of accidental hydrogen generation. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case...
Topics: Discipline: Nuclear, Area: Legal and Ethics, Area: Management, Area: Public Policy, Assignment:...
ASEE Engineering Case Library
by H.O. Fuchs; O. Lorentsen; A. Krauter
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The design of a centrifuge is described in three installments, each ending with some unsolved problems. Suggested questions for the student appear at the end of each installment. (A) A Centrifuge Project (B) Inertia Starter for the Centrifuge (C) Centrifuge Clutch Design Part of the ASEE Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in 1964 with the support of the National Science Foundation....
Topics: Discipline: Mechanical, Area: Analysis, Area: Design and Development, Area: Management, Assignment:...
ASEE Engineering Case Library
by Robert Jennings Heinsohn
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This case describes the effort of Roaring Spring Foundry to achieve compliance with Occupational Safety and Health Administration (OSHA) standards for free silica and noise following citations for violation in 1973 and 1979. Roaring Spring is a small gray iron foundry in eastern Pennsylvania manufacturing decorative Victorian Lamp posts, junction boxes, and other electrical equipment for exterior lighting. Included in the case are: (1) toxicology of silica and olivine; (2) economic analysis of...
Topics: Discipline: Other, Area: Legal and Ethics, Assignment: Analysis, Assignment: Discussion
ASEE Engineering Case Library
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A study of the efforts of an electric utility company to adopt a new approach to controlling emissions from a coal-burning power plant. The technical issues are examined as well as the associated legal and regulatory controversies. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in 1964 with the support of the...
Topics: Discipline: Chemical, Discipline: Civil, Discipline: Mechanical, Area: Analysis, Area: Design and...
ASEE Engineering Case Library
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Prepared as part of the 1983 Washington Internships for Students of Engineering (WISE) Program under the supervision of Dr. Barry Hyman, 1983 Faculty-Member-in Residence. Modified and edited by Dr. Hyman. All opinions presented are those of the author and do not in any way represent those of the author's institution, or of other individuals or institutions referred to in the text. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL),...
Topics: Discipline: Mechanical, Area: Design and Development, Area: Legal and Ethics, Assignment: Analysis,...
ASEE Engineering Case Library
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Dick Hirsch is assigned the task of analyzing the operation of a recently invented hydraulic accelerator for a machine gun. Through the use of elementary mechanics, he formulates and solves the equation in two days. The case, which describes the problem and its solution, is divided into three parts: problem statement, Hirsch's solution, and a subsequent development. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be...
Topics: Discipline: Aero and Astro, Discipline: Mechanical, Area: Analysis, Area: Design and Development,...