Category:Fatigue and Fracture Analysis

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What is fatigue and fracture analysis?

In scientific terms, Fatigue is the weakening of a material due to the application of repetitive loads. The damage/weakening is progressive and occurs due to the exposure to cyclic loads, generally well below the stress equivalent to the yield stress limit. This process leads to a build up of stress that concentrates in certain locations on a structure/material, this leads to the production of microscopic cracks.


Fracturing is the process by which a material or object becomes two due to failure due to stress. One cause of fracture can be through the sudden propagation of a crack caused due to fatigue in an object.

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What is the purpose of fatigue and fracture analysis?

The purpose of fatigue and fracture analysis is to model the behaviour of a test subject when subjected to cyclic loads smaller than the failure load. it is suggested that approximately 95% of all structural failures occur due to fatigue from cyclic stresses and as a result it is important to understand how a structure will behave under these particular loading conditions.


Where and when do we use fatigue and fracture analysis?

Fatigue is a phenomenon that is known to occur in both metal and wood. Fatigue and fracture analysis is used in the design stages when designing structures such as bridges in which the structure will be subjected to repetitive loads less than the maximum failure load. By having an understanding of the behaviour of a structure/object under cyclic loading it is possible to prevent crack propagation and take special measures to ensure fracture doesn't occur.

Pages in category "Fatigue and Fracture Analysis"

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