Question

Question 6 1 pts When a material doesn't change its strain perpendicular to the loading condition, the material is said to exhibit: Fracture Toughness Plane Strain Plane Stress Crack Propagation Question 7 1 pts The sharper the fillet radius is on the geometry of the part, the the stress concentration factor will be and the the material will catastrophically fajl. lower, more likely higher, less likely higher, more likely lower, less likely

Answer 1

(6) Plain Strain

Explanation: Plain Strain is the condition in which strain in one direction is zero.

(7) Higher, more likely

Explanation: Sharper the fillet radius means more stress concentration which leads to more likely failure of object.

(8) False

Explanation: FCC doesn't experience ductile to brittle transition.

(9) Fatigue limit

Explanation:  Fatigue limit is the stress level below which an infinite number of loading cycles can be applied to a material without causing fatigue failure.

(10) Secondary region

Explanation: In secondary region strain rate is constant.