Question

Determine the notch sensitivity for the specimen whose maximum stress in notched specimen is 250 MPa and stress in notch free specimen is 100 MPa . The theoretical stress concentration factor is given as 3.
A) 0.75
B) 0.80
C) 1.2
D) 0.5

Answer 1

Answer:

c .  1.2

Explanation:

Answer 2

Answer:

option A

Explanation:

kt=3

kf=max stress in notch specimen/stress in notch free specimen

kf=250/100 =2.5

q= ?

q=kf-1/kt-1 =2.5-1/3-1

q= 1.5/2

q=0.75