Question

(25) Test 1: A Chromel wire sample with cross section area 0.1 mm2 was subjected to a static load. A mass of 3 kg was applied to the wire while elongation was measured with time 2. (3) would the described test conditions provide the necessary setting for a creep test? Explain. A. Consider the (a-t) curve below obtained from the performed creep test 1. 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 0 4 6 8 10 12 14 Time (min) B. 7) Divide and label your graph with the appropriate creep stages. C. (5) Determine the steady state creep rate? D. (8) Test 2: A second creep test was performed to a specimen of the same material and length but with cross section area 0.2 mm2 and under the same creep conditions except that the applied mass was reduced to 2.5 kg Draw on top of the same graph a rough sketch of the expected creep test 2 results. (show calculation details) E. (2) What other possible change to creep Test 1 setting could have resulted in a similar plot to what was obtained in Part D (Test 2)?

you do not have to do B, thanks for the help!

Answer 1

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