One thing that does ground old aircraft is the impending failure of their aluminium structure from metal fatigue.

让老旧飞机搁浅的一件事就是飞机铝构造因为金属疲劳产生的故障隐患。

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So, it is the new method of researching welded structure fatigue damage process.

因此，它是一种研究焊接结构疲劳损伤过程的新途径。

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Than the structure details contained in integral joint are analyzed, and the fatigue property of steel bridge integral joint is evaluated.

然后分析了钢桥整体节点所包含的构造细节，评价了钢桥整体节点的疲劳性能。

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The aim, as always, is to ensure that unpredictable factors do not reduce the fatigue life of a structure to less than that required.

ECONOMIST: Aircraft fatigue

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What makes aircraft fatigue such an dark art is that, unlike standard tests done in a laboratory, an aircraft's structure has to endure a complex, mostly random, set of static as well as cyclical stresses when in service.

ECONOMIST: Aircraft fatigue