a) Explain the differences in the necked regions for the two tensile specimens (
ID: 1849240 • Letter: A
Question
a) Explain the differences in the necked regions for the two tensile specimens (one made of metal and the other made of plastic) and why they occur?b)Is the material in the necked region of the polymer mechanically the same as the material in the unnecked region? how are they different? is the polymer(HDPE) material initially isotropic? is the material in the necked region isotropic?
c) What would an idealized load- deflection curve for a polymer look like for a specimen where a neck forms begin to propagate?
Explanation / Answer
1. The tensile test is one of the most frequently used methods for determining loading and to avoid fracture occurring in the region being gripped, the mid These instruments grip the specimens at two points on the gauge length. 2. adapted to suit different courses; for students on a biomaterials course, blood sugar dismantled. For those on a sports/materials course, the components. There are some polymer identification exercises, using simple equipment.
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