Real-time monitoring of phase maps of digital shearography

Lianqing Zhu; Yonghong Wang; Nan XuSijin WuMingli DongLianxiang Yang

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Real-time monitoring of phase maps of digital shearography

机译：Real-time monitoring of phase maps of digital shearography

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摘要

Digital shearography has demonstrated great potential in direct strain measurement and, thus, has become an industrial tool for nondestructive testing (NDT), especially for NDT of delaminations and detection of impact damage in composite materials such as carbon fiber reinforced plastics and honeycomb structures. The increasing demand for high measurement sensitivity has led to the need for real-time monitoring of a digital shearographic phase map. Phase maps can be generated by applying a temporal, or spatial, phase shift technique. The temporal phase shift technique is simpler and more reliable for industry applications and, thus, has widely been utilized in practical shearographic inspection systems. This paper presents a review of the temporal phase shift digital shearography method with different algorithms and the possibility for real-time monitoring of phase maps for NDT. Quantitative and real-time monitoring of full-field strain information, using different algorithms, is presented. The potentials and limitations for each algorithm are discussed and demonstrated through examples of shearographic testing.

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来源
《Optical Engineering》 |2013年第10期|101902-1-101902-8|共8页
作者
Lianqing Zhu; Yonghong Wang; Nan XuSijin WuMingli DongLianxiang Yang;
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作者单位

Beijing Information Science and Technology University, School of Instrument Science and Opto-Electronic Engineering, 12 E. Xiaoyin Rd., Qinghe of Haidan District, Beijing 100192, China;

Oakland University, Department of Mechanical Engineering, Optical Laboratory, 2200 N. Squirrel Rd. Rochester, Michigan 48309;

Hefei University of Technology, School of Instrument Science and Opto-Electronic Engineering, 59 Tunxi Rd., Hefei 230009, China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类计量学;
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Real-time monitoring of phase maps of digital shearography

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