Mechanical Engineering: Fatigue Failure and Design Quiz

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Which type of stress changes constantly in dynamic load applications?

Intensity of the stress

Magnitude of the stress

Direction of the stress (correct)

Frequency of the stress

What type of stress can be cyclic or random in dynamic load applications?

Compressive stress

Dynamic stress (correct)

Bending stress

Tensile stress

Which parameter values are useful for material selection and component dimensioning in statically loaded components?

Cyclic stress values

Strength parameters from fatigue tests (correct)

Dynamic load values

Stress intensity values

What must components be designed to prevent in many applications?

Permanent deformation Signup and view all the answers

In fatigue failure, what changes constantly along with the stress intensity?

Direction of the stress Signup and view all the answers

What is the main cause of fatigue failure in materials subjected to repeated loading and unloading?

The formation of small cracks that grow as a result of repeated stresses Signup and view all the answers

In which type of stress cycle does the amplitude alternate from a maximum tensile stress to a minimum compressive stress of equal magnitude?

Reversed (pure alternating) stress cycle Signup and view all the answers

What is the nature of fatigue failure in materials, even in normally ductile metals?

Brittle, with minimal gross plastic deformation Signup and view all the answers

What kind of stress is necessary for fatigue to occur in a material?

Partially tensile stress Signup and view all the answers

Where is fatigue failure most commonly observed?

In load-bearing components, bridges, cars, and airplanes Signup and view all the answers

Mechanical Engineering: Fatigue Failure and Design Quiz

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Questions and Answers

Which type of stress changes constantly in dynamic load applications?

What type of stress can be cyclic or random in dynamic load applications?

Which parameter values are useful for material selection and component dimensioning in statically loaded components?

What must components be designed to prevent in many applications?

In fatigue failure, what changes constantly along with the stress intensity?

What is the main cause of fatigue failure in materials subjected to repeated loading and unloading?

In which type of stress cycle does the amplitude alternate from a maximum tensile stress to a minimum compressive stress of equal magnitude?

What is the nature of fatigue failure in materials, even in normally ductile metals?

What kind of stress is necessary for fatigue to occur in a material?

Where is fatigue failure most commonly observed?

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