全因子试验设计在X射线衍射法测试高应力标样残余应力值中的应用
Application of Full Factorial Experiment Design in Residual Stress Measurement of High Stress Standard Sample by X-ray Diffraction Method
摘 要
针对X射线法测试残余应力值的主要参数——准直器直径、曝光时间和β角数量,依据6σ的DMAIC流程和全因子试验设计,研究了标准高应力试样残余应力值的测试方法.结果表明：上述参数对探测器X光子接收数量、衍射峰强度和峰背比的大小有较大影响.为提高测试精确度和重复性,在满足检测效率的前提下,可选择较小的准直器直径、较长的曝光时间和较大的β角数量进行残余应力测试.对于标准高应力试样,选择2 mm准直管、3 s曝光时间和11个β角参数测定的残余应力值与标准值最为接近.
残余应力
试验设计
准直器直径
曝光时间
β角数量
X-ray diffraction
residual stress
design of experiment
aperture diameter
exposure time
number of β angle
Abstract
A DMAIC flow of 6σ was made to study the influence of the parameters such as aperture diameter,exposure time and number of β angle on residual stress measurement of high stress standard sample by X-ray diffraction method.The results of full factorial experiment showed that the parameters had an great effect on amount of X photon,intensity of X-ray diffraction peak and ration of diffraction peak to background.On the premise of meeting the conditions of detecting efficiency,small aperture diameter,long exposure time and large number of β angle could increase accuracy and decrease repeatability error of the test results.According to the high stress standard sample,choose 2 mm aperture diameter,3 s exposure time and 11β angle could meet the requirements of the related standard value.
中图分类号 TG115.22+2.2 DOI 10.11973/lhjy-wl201507005
所属栏目 试验与研究
基金项目
收稿日期 2014/11/11
修改稿日期
网络出版日期
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备注张庆云(1981-),女,高级工程师,硕士.
引用该论文: ZHANG Qing-yun,ZHANG Jie,LU Ye-hang,LI Zhong-cheng. Application of Full Factorial Experiment Design in Residual Stress Measurement of High Stress Standard Sample by X-ray Diffraction Method[J]. Physical Testing and Chemical Analysis part A:Physical Testing, 2015, 51(7): 470～473
张庆云,张杰,陆业航,李众城. 全因子试验设计在X射线衍射法测试高应力标样残余应力值中的应用[J]. 理化检验－物理分册, 2015, 51(7): 470～473
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参考文献
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【2】袁建平,程钢,丁丽峰,等.核电转子滚压强化后残余应力分析与评价[J].理化检验-物理分册,2013,49(6):375-377.
【3】李兴东,周玉华,赵龙飞,等.镍基高温合金定向结晶叶片的X射线残余应力测定[J].理化检验-物理分册,2013,49(7):419-421.
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