A novel approach for full-field measurement of principal stress directions in photoelasticity

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A novel approach, called min-max scan, is proposed to measure the full-field principal stress directions digitally. By using a light-field plan-polariscope and a PC-based image processing system, the intensities of the model images under varying loads are scanned and compared in real-time to form images representing the minimum (isoclinics) and maximum intensities at each point on the model. The influence of isochromatics on the isoclinics is eliminated. Using two sets of images obtained at the angle of 0 and π/8, respectively, the full-field principal stress directions can be determined in the range [0, π/2]. Relevant theory for the proposed approach is introduced and the experiment results are shown.

Original languageEnglish
Title of host publicationProceedings of the Second International Symposium on Instrumentation Science and Technology
EditorsT. Jiubin, W. Xianfang, T. Jiubin, W. Xianfang
Publication statusPublished - 2002 Dec 1
EventProceedings of the second International Symposium on Instrumentation Science and Technology - Jinan, China
Duration: 2002 Aug 182002 Aug 22

Publication series

NameProceedings of the Second International Symposium on Instrumentation Science and Technology
Volume2

Other

OtherProceedings of the second International Symposium on Instrumentation Science and Technology
CountryChina
CityJinan
Period02-08-1802-08-22

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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  • Cite this

    Chen, T. Y-F., & Chou, Y. C. (2002). A novel approach for full-field measurement of principal stress directions in photoelasticity. In T. Jiubin, W. Xianfang, T. Jiubin, & W. Xianfang (Eds.), Proceedings of the Second International Symposium on Instrumentation Science and Technology (Proceedings of the Second International Symposium on Instrumentation Science and Technology; Vol. 2).