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 ?
'There is an endurance limit to relentless and assault;
When [R.sub.[sigma]] = 0.5 endurance limit is reached at 6*106 cycles, [R.sub.[sigma]] = -1 is reduced to 3*[10.sup.5] cycles, [R.sub.[sigma]] = -2 is increased to 2*[10.sup.6] cycles.
Moreover, technological advancements in drones like higher endurance limit is further expected to boost their demand in the coming years.
Fatigue endurance strength is expected in the range between 268 MPa to 275 MPa for un-notched specimens and 144 MPa to 165 MPa for notched specimens [3][4].For un-notched specimens, endurance limit and impact energy was specified as 275 MPa and 20 Joules to 88 Joules, respectively.
The Marines could fly a Reaper to a certain location and once it reaches its endurance limit it would launch smaller systems, he noted.
Instrinsic strength is a minimum requirement for crack growth, and therefore an indicator of a material's fatigue endurance limit. With computer simulation of damage development in elastomeric products becoming a routine practice, the demand for cost-effective and reliable information about fatigue behavior of the material is said to be growing.
According to the company, Chelyabinsk Metallurgical Plant's rails were produced using a unique heat treatment technology which enables the plant to produce rolls with superior wear resistance, durability and endurance limit. The plant produces rails at its universal rolling mill with a 1.1-million-tonne capacity, using the most advanced rolling, correction, processing and quality control technologies.
Likewise, should a tire's wear limit exceed its fatigue endurance limit, that tire will probably fail via a belt separation.
The graphical method involves determination of effect of various factors like load, temperature, size, and surface on the endurance limit of the 65Si7.
This means the piping system design requires sustaining the endurance limit from high cycle fatigue failure of the material stress-life (SN) curves.
With the likely exception of the engineering fraternity out there - explaining "stress ranges" and the effects of moisture which can lead to "corrosion reducing the fatigue endurance limit" as well as "crack propagation" and so on - will be no easy task.