首页 > 论文 > 光学学报 > 24卷 > 2期(pp:162-167)

数字光弹性中五步彩色相移法及其应用

Five-Step Color Phase-Shifting Technique in Digital Photoelasticity and Its Applications

  • 摘要
  • 论文信息
  • 参考文献
  • 被引情况
  • PDF全文
分享:

摘要

把相移法与光学彩色信息图像处理技术相结合,提出全场数字化确定主方向角的光弹性五步彩色相移法。其主要优点是采用最简单的白光平面偏振仪光学系统,由数码照相机采集五幅等色线与等倾线相互耦合的彩色条纹图,经计算机进行处理后,就可以得到[0~π/2]范围内单纯连续的等倾角相图;为了减少测量误差,在相移法中引入背景光强参与运算。对实验中存在的三种主要误差因素进行了定量分析,给出了具体的误差控制指标。用对径压缩圆盘问题的理论仿真模拟结果、基本实验和复杂平面及空间实际问题进行检验和对比,表明本方法是正确可行的。

Abstract

Combined color imaging with phase shifting, a technique named five-step color phase shifting (CPST) is presented to determine principal direction angle and the whole-field single isoclinic phase map in the range of [0,π/2]. A digital camera recorded five isoclinic color images coupled with isochromatics from a plane polariscope with five different settings, respectively. The unloaded light intensity image is introduced to operation. For knowing the accuracy of the CPST influenced by the different error sources, such as measuring intensities errors, orientation errors, and especially the initial stress errors, methods are given to analyze and estimate the influence of the different error sources on the final calculated isoclinic results. Experiments have been carried out with the simulation of a circular disk under diametral compression and some actual applications. This technique utilizes white light, which avoids undefined isoclinics near the locations where the isochromatics exist, and will have active effect on experimental stress analysis and structural strength design.

Newport宣传-MKS新实验室计划
补充资料

中图分类号:O348; O438

所属栏目:傅里叶光学与光信号处理

基金项目:国家自然科学基金(10232030)资助课题。

收稿日期:2002-10-28

修改稿日期:--

网络出版日期:--

作者单位    点击查看

雷振坤:天津大学机械学院力学系, 天津 300072
云大真:大连理工大学工程力学系,大连 116024
亢一澜:天津大学机械学院力学系, 天津 300072

联系人作者:雷振坤(leizk@163.com)

【1】Remesh K. Digital Photoelasticity――Advanced Techniques and Applications. Berlin: Springer-Verlag, 2000. 174~175

【2】Heker F W, Morche BC. Computer-aided measurement of relative retardation in plane photoelasticity. In: Wieringa H. ed. Experimental Stress Analysis, 1986, 535~542

【3】Yao J Y. Extracting isoclinics using image processing techniques. Exp. Mech., 1987, 11(10):30~31

【4】Maeatari S, Takashi M, Toyoda Y et al.. A single-valued representative function for determination of principal stress direction in photoelastic analysis. Proc. 9th Intl. conf. On Exp. Mech., 1990, 5:2069~2078

【5】Patterson E A, Wang Z F. Towards full field automated photoelastic analysis of complex components. Strain., 1991, 27(2):49~56

【6】Sarma A V S S S R, Pillai S A, Subramanian G et al.. Computerized image processing for whole field determination for isoclinics and isochromatics. Exp. Mech., 1992, 32(1):24~29

【7】Chen T Y, Lin C H. Whole-field digital measurement of principal stress directions in photoelasticity. Opt. Lasers Engng., 1998, 30(6):527~537

【8】Wang Z F, Patterson E A. Use of phase-stepping with demodulation and fuzzy sets for birefringence measurement. Opt. Lasers Engng., 1995, 22(2):91~104

【9】Kihara T. Automatic whole-field measurement of principal stress directions using three wavelengths. Proc. 10th Int. Conf. Exp. Mech., 1994, 1,Lisbon,95~99

【10】Petrucci G. Full-field automatic evaluation of an isoclinic parameter in white light. Exp. Mech., 1997, 37(4):420~426

【11】Tang Chen, Yu Wanming, Yun Dazhen. Color image separation method for obtaining pure isoclinic pattern. J. Dalian Univ. Technol.(大连理工大学学报), 1999, 39(4): 494497 (in Chinese)

【12】Juan Antonio Quiroga, Agustin Gonzalez-Gano. Method of error analysis for phase-measuring algorithms applied to photoelasticity. Appl. Opt., 1998, 37(20):4488~4495

【13】Ji W, Patterson E A. Simulation of error in automated photoelasticity. Exp. Mech., 1998, 39(2):132~139

【14】Tamrakar D K, Ramesh K. Simulation of error in digital photoelasticity by Jones Calculus. Strain, 2001, 37(3):105~112

【15】Lei Zhenkun, Yun Dazhen. Whole-field determination of isoclinic parameter by five-step color phase shifting technique. Opt. Technol.(光学技术), 2002, 28(2):143144. (in Chinese)

【16】Lei Zhenkun, Yun Dazhen, Yu Wanming. The influence of intensity and orientation errors on photoelastic five-step color phase shifting. Opt. Technol.(光学技术), 2002, 28(4):313~316 (in Chinese)

【17】Lei Zhenkun, Yun Dazhen, Kang Yilan et al.. Photoelastic five-step phase shifting to estimate the influence of initial stresses on isoclinic. Exp. Mech. (实验力学), 2002, 17(3):267~273 (in Chinese)

引用该论文

雷振坤,云大真,亢一澜. Five-Step Color Phase-Shifting Technique in Digital Photoelasticity and Its Applications[J]. Acta Optica Sinica, 2004, 24(2): 162-167

雷振坤,云大真,亢一澜. 数字光弹性中五步彩色相移法及其应用[J]. 光学学报, 2004, 24(2): 162-167

被引情况

【1】李志诚,唐志列,陈萍,陈飞虎. 基于斯托克斯参量的光弹性应力分布及成像方法研究. 光学学报, 2012, 32(5): 512005--1

【2】李金鹏,陈磊,乌兰图雅,杨鸣箫,周舒,朱荣刚,郑东晖. 基于移相算法的玻璃应力延迟量快速测量方法. 光学学报, 2013, 33(6): 612005--1

您的浏览器不支持PDF插件,请使用最新的(Chrome/Fire Fox等)浏览器.或者您还可以点击此处下载该论文PDF