The tank of the air compressor is subjected to an internal pressure of 0.63 mpa. if the internal diameter of the tank is 550mm, and the wall thickness is 6mm (a). construct a net mohr's circle depicting the state of stress acting at any point along the length of the 20 marks (b). illustrate the state of stress above on a differential element (infinitesimal cube).

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?