Question

the _______________ is the maximum stress a fastener can withstand for a specified number of repeated cycles prior to its failure.
shear strength
proof load
tensile strength
fatigue strength

Explanation:

Shear strength is related to resistance to shear - type forces. Proof load is a static load test value. Tensile strength is for maximum stress under tension until failure in a single - load situation. Fatigue strength is defined as the maximum stress a material (like a fastener) can withstand for a specified number of repeated cycles before failure.

Answer:

D. Fatigue Strength