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1. Plastic deformation in thermoplastic polymers is the result of: a)The motion

ID: 1859440 • Letter: 1

Question

1. Plastic deformation in thermoplastic polymers is the result of:

a)The motion b)the breaking of polymer chains c)the sliding and rotation of polymer chains d)crack propagation between polymer chains e) all of above


2. Crystalline ceramic do not experience significant plastic deformation because:

a) the stress required to move dislocations is greater than the fracture stress.

b)the ionic bonds are too strong

c)small flaws in the material act as stress concentrators, causing fracture before plastic deformation can occur.

d)all of the above e) none of the the above

Explanation / Answer

crack propagation between polymer chains


all the above