Aplate 100 mm wide and 10 mm thick is to be welded to another plate by means of double parallel fillets. the plates are subjected to a static load of 80 kn, find the length of weld if the permissible shear stress in the weld does not exceed 55 mpa.

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?