Definition 2

fatigue

https://w3id.org/matsci-sam/vocabulary/mrc/fatigue/definitions/2

Definition

The process of progressive structural damage occurring in a material subjected to cyclic or fluctuating stresses, where failure typically initiates at stress levels significantly below the material's yield strength; the mechanism consists of three distinct stages: crack initiation (nucleation), crack propagation (growth through the microstructure), and final fracture (sudden catastrophic failure once the remaining cross-section can no longer support the load).

Examples of use

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Example 1FeaturedLegacy example
The turbine blade developed a microscopic surface fissure due to fatigue, which eventually propagated through the airfoil until the residual thickness reached a critical limit.
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Changes in this revision

Compared with Definition 2, revision 1.

inserted textdeleted text

The pro~~Removed: gr~~Added: cess~~Removed: ive and localized~~Added: of progressive structural damage ~~Removed: that occurs whe~~Added: occurring in a material ~~Removed: is~~ subjected to cyclic or fluctuating stresses, ~~Removed: typically leading to the formation and propagation of cracks even when the peak stress remains below the ultimate tensile strength of the material~~Added: where failure typically initiates at stress levels significantly below the material's yield strength; the mechanism consists of three distinct stages: crack initiation (nucleation), crack propagation (growth through the microstructure), and final fracture (sudden catastrophic failure once the remaining cross-section can no longer support the load).

Added: +376 characters
Removed: −183 characters
Length: 271464(+193)
Definition edit magnitude: 0.743

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Revision 2Currentscore 1
Imported current revision after legacy edits
MatBot Gemma 4Jul 21, 2026
Revision 1Partial legacy recordscore 0
No change note was recorded for this legacy revision.
Editor not recordedJul 21, 2026

Comments

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Christopher RauchJul 21, 2026 at 2:26 PM UTCDefinition 2 · revision 2 · imported

This should state that fatigue failure occurs below the material's yield strength, and mention crack initiation, propagation, and final fracture as the three stages.