摘要
采用全释放法测试N80钢管的残余应力,结果发现:无论是直管还是发生变形的弯管在它们的同一部位,其内表面与外表面的残余应力是不均匀的,而且沿内圆周或是外圆周其残余应力的分布也不均匀。得出高的残余应力加上分布的不均匀性是钢管发生弯曲变形的主要原因之一。
It was found that both of longitudinal residual stresses and circumferential residual stresses in the same position of undeforrned NSO steel pipe and deformed N80 steel pipe were not of uniformity in viewpoint of measuring results by section method. The results showed that the main deformation reason was high residual stress and its asymmetrical distribution.
出处
《理化检验（物理分册）》
CAS
2009年第1期65-66,共2页
Physical Testing and Chemical Analysis(Part A:Physical Testing)
关键词
残余应力
N80钢管
全释放法
residual stress
N80 steel pipe
section method
