Question

how many types of fatigue are (a) 4 (b) 6 (c) 2(d) 3​

Answer 1

Answer:

3

Explanation:

There are three stages of fatigue failure: 1) Crack initiation; 2) Crack propagation; 3) Final fracture. The crack initiation usually takes place on the surface of the metal in the vicinity of a notch.

Answer 2

Answer:

Types of fatigue

Explanation:

There are three main types of fatigue present.

1. Transient Fatigue .
2. Cumulative Fatigue.
3. Circadian Fatigue.

Hence ,

Option d) is correct