Name and discuss in some detail three process/ machine considerations when injection molding a whisker-reinforced part. Think about the fiber length, the small clearances between the nozzle and part, flow through the part, type of resin (i.e. thermoplastic vs. thermoset), Screw speed, etc are some of the considerations that could be discussed somewhere in their answer. Define symmetry and balance
as they relate to composite lay-ups, and give examples of having one but not both qualities. What will happen to the part if both are not met?
What will be an ideal response?
Symmetry is when the part is cut directly down the middle the two sides are mirror images of each other. Balance is determined by the angles that the direction of the fibers are going in and making sure that they cancel each other out. If these factors are not met in the part layup there will be warpage in the part's structure. If both are met the maximum strength that the fibers can give is met.
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What will be an ideal response?
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