Determination of Principal-Stress Directions by Three-Step Color Phase Shifting Technique |
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| Journal | Key Engineering Materials (Volumes 321 - 323) |
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| Volume | Advanced Nondestructive Evaluation I |
| Edited by | Seung-Seok Lee, Joon Hyun Lee, Ik Keun Park, Sung-Jin Song, Man Yong Choi |
| Pages | 1284-1287 |
| DOI | 10.4028/www.scientific.net/KEM.321-323.1284 |
| Citation | Pichet Pinit et al., 2006, Key Engineering Materials, 321-323, 1284 |
| Online since | October, 2006 |
| Authors | Pichet Pinit, Tobita Susumu, Eisaku Umezaki |
| Keywords | Color Phase-Shifting Technique, Isoclinic Phase Map, Principal-Stress Directions |
| Abstract | A three-step phase shifting approach for automatic determination of the isoclinic parameter in photoelasticity is presented. Unreliable isoclinic values affected by the isochromatic parameter are solved using the white light. The method uses three fringe images digitally captured by a digital camera for three different configurations of the dark-field plane polariscope. For a circular disk under compression, results show the method permits the isoclinic parameter in the range -π/2 to π/2 with almost free of the isochromatic parameter and comparable with theory. |
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