MSE 250 Study Guide - Quiz Guide: Magnesium Alloy, Stress (Mechanics), Ultimate Tensile Strength
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Materials are classi ed by their respective properties into the following categories: metals, ceramics, polymers and composites. In the graph below, assign the di erent materials classes to the numbers one through four and give your reasoning. Solution: 1: polymers (light-weight and very exible/low sti ness) 2: composites (a mix of properties, less dense than ceramics and metals, but heavier than polymers, higher sti ness than polymers individually, but not as sti as metals or ceramics) 3: ceramics: highest sti ness of all classes, lighter than metals, heavier than polymers. 4: metals: the heaviest materials class, high sti ness. 1: a magnesium alloy (az91) has a modulus of elasticity of 45 gpa, a yield strength of 148 mpa, a tensile strength of 248 mpa, and a ductility of % el = 6. 6 %. (a) What is the maximum load that may be applied to a cylindrical specimen having a diameter of. Fmax = y a0 = 148 mpa (5 mm)2.
