material science and engineering

plastic deformation

A steel sample with a diameter of 5.93 mm and a length of 26.03 mm is drawn. At the end of the experiment, for 0.2% yield strength is calculated as 362 MPa and Elasticity module as 177 GPa. WA logo=n*loge+logK 2.1 19 leg Gerak Gantime -9 -0.1 lleg Gerouk Sokidermi 1- Log true stress - Log true strain, Find the K and n values from the graph drawn by approximating the line equation towards the homogeneous plastic deformation region in the strain graph. 600 500 450 400 50 Gerak Gerim (MPa) 300 0 50 -05 -0.3 02 -50 Mhendislik 2- The true Stress - Engineering strain graph is given, How to read engineering stress at Maximum point on graph? 3- What is the value of the true strain at the maximum point? 4- Calculate the value of the true stress at the maximum point. 5- Calculate the value of the resilience as Joule. 6- During the experiment how many mm did the sample strain when the yield strength was reached from the beginning? 7- As the yield strength point is reached (40 seconds), how many mm/minute can the drawing speed be? 8- If the device is stopped and the loading is removed at the maximum point, how much would be the diameter of the sample? A steel sample with a diameter of 5.93 mm and a length of 26.03 mm is drawn. At the end of the experiment, for 0.2% yield strength is calculated as 362 MPa and Elasticity module as 177 GPa. WA logo=n*loge+logK 2.1 19 leg Gerak Gantime -9 -0.1 lleg Gerouk Sokidermi 1- Log true stress - Log true strain, Find the K and n values from the graph drawn by approximating the line equation towards the homogeneous plastic deformation region in the strain graph. 600 500 450 400 50 Gerak Gerim (MPa) 300 0 50 -05 -0.3 02 -50 Mhendislik 2- The true Stress - Engineering strain graph is given, How to read engineering stress at Maximum point on graph? 3- What is the value of the true strain at the maximum point? 4- Calculate the value of the true stress at the maximum point. 5- Calculate the value of the resilience as Joule. 6- During the experiment how many mm did the sample strain when the yield strength was reached from the beginning? 7- As the yield strength point is reached (40 seconds), how many mm/minute can the drawing speed be? 8- If the device is stopped and the loading is removed at the maximum point, how much would be the diameter of the sample