Failure Mechanisms
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Fatigue embrittlement
Fatigue embrittlement
Fatigue embrittlement is a type of failure mechanism that can occur in materials under certain conditions. It is a process by which materials become more brittle and susceptible to failure as a result of repeated loading or stress.
Fatigue embrittlement typically occurs in materials that are subjected to cyclic loading or stress, such as in the case of fatigue failure. In these situations, the material is repeatedly stressed and strained, which can cause microscopic cracks to form on the surface of the material. Over time, these cracks can propagate deeper into the material, eventually leading to failure.
One of the key characteristics of fatigue embrittlement is that it can occur even in materials that are not naturally brittle. For example, a metal that is normally ductile and capable of undergoing large deformations without breaking may become brittle and susceptible to failure as a result of fatigue embrittlement.
In addition to increasing the susceptibility to failure, fatigue embrittlement can also reduce the overall strength and toughness of a material. This can have significant implications in engineering applications, as it can lead to the failure of structural components and machinery.
To prevent fatigue embrittlement, materials must be carefully selected and designed to withstand the loads and stresses they will be subjected to. In addition, proper maintenance and inspection practices must be implemented to detect and address any developing cracks before they can cause failure.
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