A cylindrical specimen of Aluminum-alloy having a diameter of 12.35 mm and 295 mm long is pulled in tension with a force of 24 kN. Calculate the approximate ductility in percent elongation (%EL), if strain at fracture is 0.30. Neglect the strain at elastic limit.

On a average work day more than work place firs are reorted

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?

Analyze the factors that influence the choice between the following pairs of processes to make the products indicated: i) sand casting versus die casting of an electric-motor housing ii) thread rolling versus machining of a bolt for high-strength application. (co3/c5)