Assume a 2D element in the xy plane, and z is the thickness axis. (1) List all the non-zero stress and strain components in a plane stress condition. (2) Specify the generalized Hooke’s Law for plane stress condition (3) List all the non-zero stress and strain components in a plane strain condition. (4) Specify the generalized Hooke’s Law for plane strain condition

Describe one experiment in which the glass transition temperature and melting temperature of a totally amorphous thermoplastic material can be determined. show the relevant experimental results in a diagram which should be properly annotated with the two temperatures clearly marked. what is likely to happen to the curve in the diagram if the amorphous polymer is replaced by a thermosetting type?