Problem:
The following data were obtained in a series of tensile strength tests on polycrystalline silicon carbide specimens (in MPa): 334, 289, 232, 294, 252, 337, 256, 339, 308, 365, 311, 341, 286, 314, 274, 285, 382, 379, 282, 324, 316.
(a) Determine the Weibull modulus for these samples.
(b) Would you expect the value of m for a set of steel specimens to be higher or lower than the value you calculated in part (a). Assuming that these SiC specimens were made by hot pressing, would you expect m for a series of SiC made by sintering to be higher or lower?