Endurance Limit

endurance limit

[in′du̇r·əns ‚lim·ət]
(mechanics)

Endurance Limit

 

the highest value of the stress amplitudes in a symmetrical cycle of mechanical load variation, or the maximum stress of an asymmetrical cycle, to which a material can be subjected for an unlimited number of cycles without failure. The value of the amplitude or the maximum stress in a cycle that, when repeated for a specific number of cycles, causes fatigue failure or produces macroscopic cracks is called the fatigue strength.

endurance limit

In fatigue testing, the maximum stress which can be applied to a material for an infinite number of stress cycles without resulting in failure of the material.
References in periodicals archive ?
Rising demand for high performance polymers as a result of its superior properties including corrosion resistance, resistance to wear, endurance limit, electrical insulation and thermal stability is expected to propel market growth over the forecast period.
Likewise, should a tire's wear limit exceed its fatigue endurance limit, that tire will probably fail via a belt separation.
Germany; "Infinite fatigue life: Challenges and solutions in measuring rubber's endurance limit," William Mars, Endurica; "Hard problems with soft materials: The tribology of elastomers," Kyle Row, Alexander Bennett and W.
This means the piping system design requires sustaining the endurance limit from high cycle fatigue failure of the material stress-life (SN) curves.
In manuals presented mechanical properties indices and endurance limit values are not enough parameters for responsible parts, so additional qualifying analytical experimental tests should be done.
The chemical and phase composition of the alloys have a strong effect on the nucleation of fatigue cracks and their propagation resistance, and also the absolute values of the endurance limit [[sigma] sub.
The operating stresses in the flexible membrane must be designed to be under the endurance limit of the material used.
This is in spite of the fact that C-70 steel has 18% lower yield strength and 20% lower endurance limit.
Endurance limit of concrete is defined as the flexural fatigue stress at which the beam can withstand two million cycles of non-reversed fatigue loading expressed as a percentage of modulus of rupture of plain concrete.
It was observed that the fatigue strength of VW nylon butt joints was lower than the static tensile strength; the endurance limit stress was found to be approximately one-third of the static strength of the welded material.
By combining a large database of fastener and interface materials and their physical characteristics, the BoltFAST program determines the fatigue endurance limit of a thread, the amount of embedding anticipated in a bolted joint, and the optimal tightening torque for given friction conditions.
Blaine said he chose 44 days as his endurance limit because his birthday falls on April 4.