DIN EN 15305-2009 无损检测.X射线衍射法对残余应力分析用试验方法

标准号：DIN EN 15305-2009
中文标准名称：无损检测.X射线衍射法对残余应力分析用试验方法
英文标准名称：Non-destructive testing - Test method for residual stress analysis by X-ray diffraction; German version EN 15305:2008
标准类型：H26
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：H26
国际标准分类号：19.100
引用标准：EN 13925-1-2003;EN 13925-2-2003;EN 13925-3-2005;ISO 5725-1;ISO 5725-2
适用范围：This European Standard describes the test method for the determination of macroscopic residual or appliedstresses non-destructively by X-ray diffraction analysis in the near-surface region of a polycrystallinespecimen or component.All materials with a sufficient degree of crystallinity can be analysed, but limitations may arise in the followingcases (brief indications are given in Clause 12):-- Stress gradients;-- Lattice constants gradient ;-- Surface roughness;-- Non-flat surfaces (see 5.1.2);-- Highly textured materials;-- Coarse grained material (see 5.1.4);-- Multiphase materials;-- Overlapping diffraction lines;-- Broad diffraction lines.The specific procedures developed for the determination of residual stresses in the cases listed above are notincluded in this document.The method described is based on the angular dispersive technique with reflection geometry as defined by EN13925-1.The recommendations in this document are meant for stress analysis where only the diffraction line shift isdetermined.This European Standard does not cover methods for residual stress analyses based on synchrotron X-rayradiation and it does not exhaustively consider all possible areas of application.Radiation Protection. Exposure of any part of the human body to X-rays can be injurious to health. It istherefore essential that whenever X-ray equipment is used, adequate precautions should be taken to protectthe operator and any other person in the vicinity. Recommended practice for radiation protection as well aslimits for the levels of X-radiation exposure are those established by national legislation in each country. Ifthere are no official regulations or recommendations in a country, the latest recommendations of theInternational Commission on Radiological Protection should be applied.