一种拍摄DWTT试样断口剪切面积测量用照片的方法
A Method to Take Pictures for Measuring Shear Area of DWTT Specimen Fracture
摘 要
针对落锤撕裂试验(DWTT)试样断口形貌特征, 采用合适的照明和借助配有60 mm微距镜头的普通数码照相机, 通过对断口照片垂直景深和三维尺寸变形情况等进行分析, 得出了一种获取三维尺寸变形小且图像清晰的DWTT试样断口数码照片拍摄方法。采用该方法摄取的照片, 可使定量法能够更精确地测量DWTT试样断口剪切面积。
剪切面积
数码相机
断口照片
DWTT specimen fracture
shear area
digital camera
fracture picture
Abstract
According to fracture characteristics of DWTT specimens, a common digital camera with 60 mm macro lens was chosen to take pictures of specimen fracture under a suitable illumination condition. And a method was found to take high-quality pictures with high definition and little three-dimensional deformation, by analyzing vertical depth and three-dimensional deformation of these pictures properly. This method could be used to quantitatively measure the percent shear area of DWTT specimen fracture accurately.
中图分类号 TG115
所属栏目 试验技术与方法
基金项目
收稿日期 2014/2/24
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备注徐惟诚(1963-), 男, 高级工程师, 学士。
引用该论文: XU Wei-cheng,XU Wei-xing,FANG Jian. A Method to Take Pictures for Measuring Shear Area of DWTT Specimen Fracture[J]. Physical Testing and Chemical Analysis part A:Physical Testing, 2014, 50(6): 421～423
徐惟诚,徐卫星,方健. 一种拍摄DWTT试样断口剪切面积测量用照片的方法[J]. 理化检验－物理分册, 2014, 50(6): 421～423
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参考文献
【1】何小东, 李爱萍, 杨肃, 等. 厚壁X70高钢级管线钢落锤撕裂试验断口分析[J]. 理化检验-物理分册, 2005, 41(6):286-288.
【2】GB/T 8363-2007铁素体钢落锤撕裂试验方法[S].
【3】API RP 5L3-1996(R2008)Recommended practice for conducting drop-weight teat tests on line pipe[S].
【4】邹承秀. DSLR摄影手册[M]. 北京:人民邮电出版社, 2009.
【2】GB/T 8363-2007铁素体钢落锤撕裂试验方法[S].
【3】API RP 5L3-1996(R2008)Recommended practice for conducting drop-weight teat tests on line pipe[S].
【4】邹承秀. DSLR摄影手册[M]. 北京:人民邮电出版社, 2009.
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