5)The following two pictures correspond to the failure surfaces of two different types of materials under...

Transcribed Image Text:

5)The following two pictures correspond to the failure surfaces of two different types of materials under pure torsion test. Please tell what type of material corresponds to each picture, and explain why (i.e. what kind of failure criterion is evoked)? (3pts) T T T' 5)The following two pictures correspond to the failure surfaces of two different types of materials under pure torsion test. Please tell what type of material corresponds to each picture, and explain why (i.e. what kind of failure criterion is evoked)? (3pts) T T T'