標準號：BS EN 15305-2008
中文標準名稱：無損檢驗.使用X射線衍射分析剩余應力的試驗方法
英文標準名稱：Non-destructive testing - Test method for residual stress analysis by X-ray diffraction
標準類型：H26
發布日期：2008/9/30 12:00:00
實施日期：2008/9/30 12:00:00
中國標準分類號：H26
國際標準分類號：19.100
引用標準：EN 13925-1-2003;EN 13925-2-2003;EN 13925-3-2003;ISO 5725-2;ISO 5725-1
適用范圍：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.