The requirement for materials that can bend is proliferating with the growing interest in flexible electronics and devices. The terms bending and flexing are often used interchangeably even though flexing is usually meant to be elastic while bending often involves plastic deformation. Materials can be compared with a simple “bendability figure-of-merit” through the fracture strain—that is, how much a material can be bent plastically once before breaking—for a given thickness of material, which is similar to the way that yield strain serves as a figure-of-merit for flexibility.

中文翻译：

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什么使材料可弯曲？弯曲性、延展性、延展性的厚度相关度量

随着人们对柔性电子产品和设备的兴趣日益浓厚，对可弯曲材料的需求也在激增。尽管弯曲通常意味着弹性，而弯曲通常涉及塑性变形，但术语弯曲和挠曲通常可以互换使用。对于给定厚度的材料，材料可以通过断裂应变与简单的“弯曲性能指标”进行比较——即，材料在断裂前可以塑性弯曲一次的程度，这类似于屈服的方式应变作为柔韧性的品质因数。