The term aerospace materials refers to materials, often metal alloys, that have either been developed for use in aerospace applications, or have become prominent as a result. Even at the expense of considerable production or machining cost, these uses often require exceptional performance, strength, or heat resistance.
Aerospace materials, in general, and those used in the building of commercial aircrafts in particular, are subject to stringent standards aimed at assuring their dependability and durability throughout the duration of their planned service lives. The phrase structural integrity is frequently used to refer to reliability and durability in a broader framework, one in which economic concerns are important. Part of that worldwide environment has to do with the manufacturers' efforts to confirm the physical and mechanical qualities of the materials and, as a result, the structures employed in the aerospace vehicle's construction.
Fatigue is the most prevalent cause of structural and engine component failure. Fatigue is thought to be responsible for more than half of all metal component failures, causing more damage than the combined impacts of corrosion, creep, wear, overloading, and all other failure factors on aircraft.
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