孔径法测量铜带残余应力的试验研究  

On the Measuring Residual Stress of Copper Strip With the Mathar Method

作　　者：任明孝[1] 

机构地区：[1]西安冶金建筑学院冶金系,710055

出　　处：《西安冶金建筑学院学报》1993年第2期233-237,共5页

摘　　要：介绍了用于薄板残余应力测量的新方法——孔径法,该方法是通过测量冲孔直径的变化来间接求出各方向的残余应力;文中详细阐述了残余应力的标定方法;由于可针对不同材料建立了被测材料的平均应力(σ_l)与被测板材宽度(B)、厚度(H)以及冲孔后直径变化率(△D_i/D)之间的数学模型,因而使薄板残余应力测量变得简便而经济;此外还对该方法的分辨率与测量精度进行了实验、计算与分析。The mathar method used to measure residual stress of copper strip is studied, inwhich the residual stress in every direction is evaluated by measuring the variety of cop-per strip apertured, and the calibration method of residual stress for various materials isdescribed in detail as well as the mathematical model between the mean stress(σ_i) andthe width(B), the thickness(H) and the diameter variety (ΔD_i/D) of the copper strip af-ter aperturing is established.

关 键 词：薄板 残余应力 铜带 孔径法 

分 类 号：TG146.11[一般工业技术—材料科学与工程]