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Title: A Demonstration of Heat Affected Zone from Welding PDF
Url: http://search.asee.org/search/fetch?url=file%3A%2F%2Flocalhost%2FE%3A...
Creator: Englund, Richard
Johnson, David
Sweeney, Shannon
Publisher: American Society for Engineering Education
Description: Heat effects on base metals caused by welding are often described to students in courses in manufacturing, design, or materials. An example where students may measure these effects was developed, is presented here, and is intended for programs and students who prefer to learn from concrete examples, as is typical of many engineering technology students. Description of situations where heat effects may be deleterious are provided to place this work in the context of welding operations. Presented in this paper is a simple demonstration of heat effects from welding, using commonly available materials and equipment, which allows students to measure changes in material properties. Significant changes in material properties have been achieved by butt welding two socket-head cap screws end to end, then measuring Rockwell hardness values incrementally from the weld out to the ends of the part. Sample preparation, welding, and measurements for this demonstration could easily be assigned to students in its entirety. An approximate finite element analysis of the heat applied during welding of the demonstration part, and the material changes that should be expected as a result of the welding operation are included. This demonstration combines several elements of the desired accreditation criteria program outcomes, drawing upon and extending student knowledge of manufacturing processes, materials, and thermal sciences. Possible extensions to this demonstration are also presented.



Target Audience: 2-4 Year College Faculty/Administrators
LC Classification: Bibliography. Library science. Information resources (General) -- Subject bibliography -- Education -- Special topics, A-Z -- Engineering education
Technology -- Manufactures -- Metal manufactures. Metalworking -- Joining of metals -- Welding
Technology -- Manufactures -- Metal manufactures. Metalworking -- Joining of metals -- Welding -- General works
GEM Subject: Science -- Engineering
Vocational Education -- Trade and industrial
Key Concept: Mechanical engineering -- Welds
Key Concepts Complete: Yes
Date Issued: 2005
Resource Type: Instructional Materials
Reading Materials
Science Materials
Teaching Guides
Format: pdf
Audience: College/University Instructors
Higher Education
Secondary Education
Students
Teachers
Technical School First Cycle
Technical School Second Cycle
University First Cycle
University Second Cycle
Vocational Training
Language: English
Rights: American Society for Engineering Education
Access Rights: Free access
Date Of Record Release: 2009-10-12 03:00:02 (W3C-DTF)
Date Last Modified: 2012-06-15 10:01:32 (W3C-DTF)
Source Type: ATE Center
Source: National Center for Manufacturing Education
Full Record Views: 52
Resource URL Clicks: 11
Cumulative Rating: NOT YET RATED
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