Q:The following tabulated data were gathered from a series of Charpy impact tests on a commercial low-carbon steel alloy.Temperature (°C)Q:What is the maximum carbon content possible for a plain carbon steel that must have an impact energy of at least 200 J at (50(C?Q:A fatigue test was conducted in which the mean stress was 70 MPa (10,000 psi), and the stress amplitude was 210 MPa (30,000 psi).(a) Compute theQ:A cylindrical bar of ductile cast iron is subjected to reversed and rotating-bending tests; test results (i.e., S-N behavior) are shown in FigureQ:A cylindrical 4340 steel bar is subjected to reversed rotating-bending stress cycling, which yielded the test results presented in Figure 8.20. IfQ:A cylindrical 2014-T6 aluminum alloy bar is subjected to compression-tension stress cycling along its axis; results of these tests are shown inQ:Estimate the theoretical fracture strength of a brittle material if it is known that fracture occurs by the propagation of an elliptically shapedQ:A cylindrical rod of diameter 6.7 mm fabricated from a 70Cu-30Zn brass alloy is subjected to rotating-bending load cycli