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Title: Undergraduate Materials Research: Tensile Impact Toughness of Polymers PDF
Url: http://search.asee.org/search/fetch?url=file%3A%2F%2Flocalhost%2FE%3A...
Creator: Atiqullah, Mir
Publisher: American Society for Engineering Education
Description: Materials science and engineering knowledge is vital for a solid foundation in mechanical engineering. However, often students lose interest in this subject under the pressure of other mainstream subjects such as mechanics, design, manufacturing etc. Strong foundation in materials leads to improved student interest and success in follow up courses such as design. A group of 4 senior machine design students was assigned to design and build a prototype of a bench top portable impact tester for polymers. The tester was designed to use standard ASTM D18221 procedure and specimens. The readout of the impact fracture energy is intentionally designed to require the user to do some fundamental calculations, thereby refreshing some physics of work, energy and velocity. Various polymeric materials are tested at various strain rates in a Universal Testing Machine and the impact tester. With the limited set of data acquired so far correlation was observed between strain rate and the fracture energy. It is expected that continued experimentation will provide clear correlations for various polymers. Two aspects of materials education is emphasized in this endeavor. First the engineering design and second the materials research. Both have been achieved to reasonable extents. Furthermore the interest developed among students has been an added benefit. This paper provides a detail account of the background, the design, application outline and the results of the research. The tester has been included in the materials laboratory syllabus for current semester. As many as 5 sections of 12 students can use the tester per semester. Usage of the tester is described in a format suitable for use in a materials laboratory. Extended set of experimentation and collection of student feedback are planned.
LC Classification: Technology -- Chemical technology -- Polymers and polymer manufacture
Technology -- Engineering (General). Civil engineering -- Engineering (General). Civil engineering (General) -- Materials of engineering and construction -- Specific characteristics of materials -- Mechanical properties. Behavior of materials under applied forces -- Specific properties and tests -- Plastic (inelastic) properties and tests -- Strain hardening
Technology -- Mechanical engineering and machinery -- Study and teaching
GEM Subject: Science -- Engineering
Vocational Education -- Trade and industrial
Key Concept: Mechanical engineering -- Materials
Mechanical engineering -- Strain
Key Concepts Complete: Yes
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: 2009-09-17 03:00:03 (W3C-DTF)
Date Last Modified: 2012-06-19 22:31:50 (W3C-DTF)
Source Type: ATE Center
Source: National Center for Manufacturing Education
Full Record Views: 63
Resource URL Clicks: 12
Cumulative Rating: NOT YET RATED
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