Selection of temperature-induced fringe displacements to evaluate stress field with the thermal transient stepping photoelasticity method

Hermes Fandiño Toro; Juan Briñez de León; Alejandro Restrepo-Martínez

doi:10.1117/12.2594374

1 August 2021 Selection of temperature-induced fringe displacements to evaluate stress field with the thermal transient stepping photoelasticity method

Hermes Fandiño Toro, Juan Briñez de León, Alejandro Restrepo-Martínez

Author Affiliations +

Proceedings Volume 11841, Optics and Photonics for Information Processing XV; 1184102 (2021) https://doi.org/10.1117/12.2594374
Event: SPIE Optical Engineering + Applications, 2021, San Diego, California, United States

Abstract

To simplify the implementation of photoelasticity studies, the recently introduced Thermal Transient Stepping (TTS) method produces a stress field, from images with fringe displacements induced by temperature. These images are acquired without using mechanically-induced load variations, nor rotating optical devices. However, TTS produces stress fields with unwrapping errors, due to the lack of a strategy to select adequately the fringe displacements. We addressed this limitation by evaluating different thermal stimulations, and their effects in the performance of TTS. This allows us to achieve stress fields with higher fringe orders.

Conference Presentation

Citation Download Citation

Hermes Fandiño Toro, Juan Briñez de León, and Alejandro Restrepo-Martínez "Selection of temperature-induced fringe displacements to evaluate stress field with the thermal transient stepping photoelasticity method", Proc. SPIE 11841, Optics and Photonics for Information Processing XV, 1184102 (1 August 2021); https://doi.org/10.1117/12.2594374

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