Depth-resolved stress measurement of soft material by polarization-sensitive OCT

Cuiru Sun; Xinya Zhang; Jinlong Chen

doi:10.1117/12.3003553

12 March 2024 Depth-resolved stress measurement of soft material by polarization-sensitive OCT

Cuiru Sun, Xinya Zhang, Jinlong Chen

Proceedings Volume 12844, Optical Elastography and Tissue Biomechanics XI; 128440F (2024) https://doi.org/10.1117/12.3003553
Event: SPIE BiOS, 2024, San Francisco, California, United States

Conference Poster

Abstract

In this study, a method for depth-resolved internal stress field measurement of soft materials using swept-source polarization-sensitive optical coherence tomography (SS-PS-OCT) was proposed. An SS-PS-OCT system based on circularly polarization state was constructed. A depth-resolved dispersion compensation technique was used to improve image quality and the contrast of phase retardation fringes. The stress measurement theory for PS-OCT was derived. A rubber specimen and the double-layer thermoplastic elastomer (TPE) specimen were measured. Stress magnitude results showed good agreement between PS-OCT and tensile measurements with an error of less than 5%. The principal stress direction results showed an error of less than 6%. The PS-OCT-based method for measuring internal stress fields has the potential for measuring the internal mechanical properties of soft materials.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Cuiru Sun, Xinya Zhang, and Jinlong Chen "Depth-resolved stress measurement of soft material by polarization-sensitive OCT", Proc. SPIE 12844, Optical Elastography and Tissue Biomechanics XI, 128440F (12 March 2024); https://doi.org/10.1117/12.3003553

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