For the problems below,
Clearly show your procedure and all calculations. Enclose final answers with corresponding units in a box. Upload your single.pdf file containing your answers for the problems. If you have multiple pages, make sure to merge all the pages in a single.pdf file.
Problem 1 (20 points)
During a compression test, a cylindrical specimen that has a height of 100 mm and a diameter of 70 mm is compressed between frictionless platens to a final height of 75 mm. The specimen is made of an aluminum alloy annealed. Assuming uniform deformation and volume constancy, calculate the following:
A. The engineering strain and true strain
B. The true stress. Note: Refer to your textbook for more information about the material
C. The load required to compress the specimen to the final height
Problem 2 (16 points)
During turning tests, it was found that the tool life at a cutting speed of 150 m/min was 20 min and the tool life at a cutting speed of 90 m/min was 58 min. Determine the following:
A. Calculate the values of n and C in the Taylor tool life equation
B. Based on your results, calculate the cutting speed needed to have a tool life of 35 min