Damage evolution in hybrid metal-composite aerospace structures

没有什么结构是坚不可摧的。时间、环境、重复使用和误用都会对日常结构造成损害，利用它们固有的弱点，使它们更接近失败。为了应对航空航天工业中的这种风险，采用了被称为损伤容限的结构设计理念。在这一理念下，结构的设计是为了承受较大程度的损坏，并进行定期检查，以在损坏超过结构的能力之前发现和修复损坏。这一理念的核心是需要深入了解故障和退化过程，以便能够规定适当的检查间隔。

No structure is indestructible. Time, environment, repeated use, and misuse all take their toll on everyday structures, taking advantage of their inherent weaknesses and bringing them closer to failure. To combat this risk in the aerospace industry, the structural design philosophy known as Damage Tolerance is employed. In this philosophy, structures are designed to sustain large levels of damage, and regular inspections are carried out to detect and repair damage before it exceeds the capability of the structure. Central to this philosophy is the need for a deep understanding of the failure and degradation processes so that appropriate inspection intervals can be prescribed.