Abstract
This paper discusses a new method for determining fringe order and the principal direction of birefringence from a single image in practical photoviscoelastic analysis. Using an elliptically polarized white light and color image processing, fringe pattern at each instant is analyzed from three monochromatic images obtained with a single shot. It will be emphasized that no repetition of experiment under the same condition nor multiple images acquisition is necessary, which is usually adopted in the current techniques. An example problem in the case of a plate subjected to low velocity impact is successfully analyzed by use of the method proposed, then the time variation of stress around the point of impact is traced taking the constitutive equations of photoviscoelasticity into account.
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© 2000 Kluwer Academic Publishers
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Yoneyama, S., Takashi, M. (2000). Transient Stress Analysis Under Low Velocity Impact by White Light Photoviscoelastic Technique. In: Lagarde, A. (eds) IUTAM Symposium on Advanced Optical Methods and Applications in Solid Mechanics. Solid Mechanics and its Applications, vol 82. Springer, Dordrecht. https://doi.org/10.1007/0-306-46948-0_19
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DOI: https://doi.org/10.1007/0-306-46948-0_19
Publisher Name: Springer, Dordrecht
Print ISBN: 978-0-7923-6604-1
Online ISBN: 978-0-306-46948-0
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