The Proceedings of Conference of Kanto Branch
Online ISSN : 2424-2691
ISSN-L : 2424-2691
2013.19
Session ID : 10403
Conference information
10403 Accuracy Improvement in Determination of Principal-Stress Direction from Color Photoelastic Fringes Obtained with Semicircular Polariscope
Kosuke SAITOWataru MURATAEisaku UMEZAKI
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CONFERENCE PROCEEDINGS FREE ACCESS

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Abstract
An achromatic quarter-wave plate is used to determine the principal-stress directions from color photoelastic fringes obtained in a semicircular polariscope, which is composed of a plane polariscope with a quarter-wave plate. Four phase-shifted photoelastic fringe images are acquired using the polariscope, and used to obtain the wrapped principal-stress direction using a phase-shifting technique. To investigate the effectiveness of the quarter-wave plate, the principal-stress directions from color photoelastic fringes of a circular disk subjected to a concentrated load are determined. Results show that the quarter-wave plate is effective for determining the principal-stress direction.
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© 2013 The Japan Society of Mechanical Engineers
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