Paradowska A M, Price J W H, Finlayson T R, Lienert U, Walls P, Ibrahim R
ISIS Facility, Science and Technology Facility Council, Rutherford Appleton Laboratory, Didcot OX11 0QX, UK.
J Phys Condens Matter. 2009 Mar 25;21(12):124213. doi: 10.1088/0953-8984/21/12/124213. Epub 2009 Feb 25.
70 keV synchrotron radiation and thermal neutrons have been employed to investigate the residual stress characteristics in a fully restrained, steel, butt weld. The focus is on the values of the subsurface and through-thickness strain/stress variation in the middle of the weld. The advantages and limitations of the techniques have been addressed, in relation to the gauge volume, the stress-free reference sample and positioning. The measurement of residual stress around the weld achieved in this work significantly improves the resolution at which residual stress in welded components has been determined.
已采用70keV同步辐射和热中子来研究完全约束的钢对接焊缝中的残余应力特性。重点是焊缝中部的亚表面和贯穿厚度的应变/应力变化值。针对测量体积、无应力参考样品和定位等方面，探讨了这些技术的优缺点。本工作中对焊缝周围残余应力的测量显著提高了焊接部件残余应力的测定分辨率。
