Tensile Test Experiment

The Load-Extension relationship in the linear region is not easy to read; this is because the holes at the end of the specimen; through which the tensile load is transmitted, suffer from some initial settlement and also, elongate somewhat; due to stress concentrations. To calculate the Young's modulus, I recommend that you use an extension of about 0.065mm; which corresponds to a tensile load of about 2000N.
This is a standard "Strength of Materials" test carrried out by most engineering students. The students should consult:
[1] Bird, John & Ross, Carl (2002) "Mechanical Engineering Principles", Newnes, Oxford, UK.
[2] Ross, C.T.F. (1999) "Mechanics of Solids", Horwood, Chichester, UK.
[3] Case, John, Lord Chilver & Ross, Carl, T.F. (1999) "Strength of Materials & Structures", Butterworth--Heinemann, Oxford, UK.

Category:

Science & Technology

Tags:

• Tensile
• test
• experiment;
• steel;
• Young's
• Modulus;
• Yield
• Stress;
• UTS;
• Percentage
• elongation