Mechanical Engineering Fatigue Failure and Design Quiz

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16 Questions

In the tensile, compression, and bending tests, the intensity of the stress increases rapidly until the load finally fractures the specimen?

False

Components are always subjected to dynamic loads, where the stress intensity changes constantly and the direction of the stress remains constant.

False

The dynamic stress applied to components can be either cyclic or random.

True

The S-N Curve is a result obtained from the tensile test.

False

Components must be designed such that the applied load on the material causes permanent deformation in service application.

False

The strength parameters determined from tensile, compression, and bending tests are not useful for material selection and component dimensioning.

False

Fatigue failure occurs only under static load.

False

Fatigue failure is more likely to occur after a brief period of repeated stress or strain cycling.

False

Fatigue failure can occur when the stress in the material is purely compressive.

False

Fatigue failure involves significant plastic deformation before failure.

False

Fatigue failure is primarily found in biomedical implants.

False

Fatigue failure is more commonly associated with pure alternating stress cycles than repeated (alternating) stress cycles.

True

Fatigue failure occurs without warning.

True

Crankshafts are not susceptible to fatigue failure.

False

Fatigue failure occurs only when the stress surpasses the yield strength of the material.

False

Fatigue failure can occur due to thermal expansion and contraction.

True

Test your knowledge of fatigue failure and design against fatigue in mechanical engineering with this quiz covering topics such as cyclic stresses, types of fatigue tests, fatigue failure criteria, and more. This quiz is based on the contents of Chapter 4 from Fourth Year- First Term (2023-2024) by Dr. Reham Reda Abbas.

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