Question

In a structure, a crack is formed as a result of ______

(a) Thermal expansion

(b) Thermo couple

(c) Thermal strain

(d) Thermal stress

I had been asked this question in an interview for job.

The query is from One Dimensional Problems topic in section One Dimensional Problems of Finite Element Method

Answer 1

Correct answer is (d) Thermal stress

For explanation I would say: Thermal stress is caused by differences in temperature or by differences in thermal expansion. A crack formed as a result of Thermal stress produced by rapid cooling from a high temperature.