Test Your Fatigue Knowledge

Did you know that the number of structural failures due to fatigue is much larger than due to static overload? Managing and preventing problems due to metal fatigue should be considered a key capability of a structural engineer. Do you want to know how your fatigue knowledge is? Do the Fatigue Knowledge Test.

1 / 8

Reinforcements around a hole will always reduce the stress concentration factor

True

False

2 / 8

For fatigue analysis we should use

Principal stresses

Equivalent stresses

3 / 8

What is the stress concentration factor of a circular hole in an infinite sheet under tension?

2.5

2.73

3.0

3.36

4.0

4 / 8

What is decisive for fatigue?

Mean stress

Stress amplitudes

5 / 8

Fatigue cracks initiate much easier at the surface than in the core of a material.

True

False

6 / 8

What is the effect of mean stresses on the fatigue limit?

The fatigue limit decreases with increasing mean stress

The fatigue limit increases with increasing mean stress

There is no effect

7 / 8

Compressive residual stresses at a critical location are favourable for the fatigue behaviour.

True

False

8 / 8

The stronger the material, the larger the effect of surface roughness on the fatigue limit

True

False

Your score is

Are you happy with the result or are you disappointed? We offer courses to improve your fatigue knowledge. Have a look at the Fatec Academy. Or subscribe to our newsletter and we will keep you informed about fatigue and Fatec Engineering.