metal fatigue


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metal fatigue

A weakening in the strength of a metal caused by repeated or fluctuating stresses. See fatigue (i).
References in periodicals archive ?
Despite the discovery, officials have declined to speculate on whether metal fatigue caused the crash, reported The Associated Press.
Whenever failure of some structure or machine leads to a disaster which is worthwhile reporting, the press invariably hints darkly of metal fatigue. Unfortunately the technical knowledge of these gentlemen of the press is often suspect, as evidenced by that oft repeated account of the legendary cable, through which a current of 132,000 volts was flowing!
a metal fatigue crack along the circumference of the component.
Metal fatigue is suspected of causing the rupture of the wheel axle.
Aviation experts have put forward several theories for the crash - including metal fatigue - however investigators will reportedly need to recover at least 70-80% of the wreckage to be able to reconstruct the aircraft and determine the cause.
During the last three months, passengers have faced lengthy delays as Railtrack launched the biggest rail renewal programme for 100 years in a bid to tackle the problem of metal fatigue of the tracks.
Mr Speedie, who lives in Lab-urnum Grove with his wife, Rose, aged 68, said: "There is one solitary light along the jitty and it has been broken since May 22, when it collapsed with metal fatigue.
Japan Atomic Power is looking into the possibility that the cracks were caused by heat fatigue, a type of metal fatigue resulting from constant expansion and contraction due to temperature changes.
A professor of aeronautics at National Chengkung University has claimed that metal fatigue - which develops as aircraft constantly expand and contract during takeoffs and landings - may have caused the aircraft to split apart in the air.
All old-style Corsas and Tigras built between 1993 and mid 2000 are affected after seat rails and belt buckles on some cars showed signs of metal fatigue.
Five million people without an underground railway network in the West Midlands county must be desperate for a realistic answer and, with the newly revealed Railtrack problem of massive metal fatigue, transportation within the county area will be pushed away yet again.