一、导言 随着机械产品失效分析与质量管理的加强,人们已经清楚零件的失效诱发因素可归纳为应力、环境和时间三个基本因素。力的因素就是指作用于材料上的应力。X射线应力测定技术在近十余年发展很快,所谓“内应力”是指当产生应力的各种因素的作用不复存在时,由于 I. INTRODUCTION With the failure analysis and quality management of machinery products strengthened, it has been clear that the failure inducing factors of parts can be summarized as three basic factors of stress, environment and time. Force factor refers to the role of stress on the material. X-ray stress measurement technology developed rapidly in the past ten years, the so-called “internal stress” refers to the stress generated when the role of various factors no longer exist, due to