摘要
针对几种常见的残余应力测试方法的研究进展与应用现状,指出了较为成熟的残余应力测试方法是盲孔法和X射线法,但盲孔法受限于对测试对象有损伤,X射线法受限于测试条件的苛刻,其它的残余应力测试方法在有效性、准确性和操作简便性等方面还不能很好地满足工业需求。而利用压痕法测量残余应力是一个值得关注的研究动向,在局部压载作用下,材料的压入响应与材料中的残余应力有着密切的关联,所以压痕法测试准确性好,其测试结果与盲孔法的测试结果相似程度较高,又能避免对测试对象的较大损伤,可望进一步发展为简便有效的残余应力测试方法。
According to the research development on the ordinary test methods of residual stress, it was pointed out that the more suitable test methods were blind-hole and X-ray method. But the blind-hole drilling method may hurt specimen, X-ray method request strict test environ- ment, and the other test methods can＇t fulfill industrial demand on effectiveness, accuracy and operation convenience. The residual stress measuring based on indentation has been considered noteworthy. The indentation response is related to residual stress existing in components. So the values from indentation response are in good agreement with that from the blind-hole method, meanwhile specimen hurt may be avoi- ded, the residual stress measuring technology based on indentation response will definitely display its engineering application prospects.
出处
《机电工程》
CAS
2011年第1期11-15,41,共6页
Journal of Mechanical & Electrical Engineering
关键词
局部载荷
压入响应
残余应力
local load
indentation response
residual stress
