Solid material rigidity modulus measurements by a nondestructive optical method: application to electrical steering system

Nicolas Javahiraly; Cédric Perrotton

doi:10.1117/12.920595

10 May 2012 Solid material rigidity modulus measurements by a nondestructive optical method: application to electrical steering system

Nicolas Javahiraly, Cédric Perrotton

Author Affiliations +

Proceedings Volume 8368, Photonic Applications for Aerospace, Transportation, and Harsh Environment III; 83680Q (2012) https://doi.org/10.1117/12.920595
Event: SPIE Defense, Security, and Sensing, 2012, Baltimore, Maryland, United States

Abstract

We propose a new non destructive optical method for the determination of the shear modulus G of solid materials. The shear modulus is determined by measuring the twisted angle θ as a response of the material sample, depending on an applied force. The measuring of this twisted angle is obtained by using an adapted polarimetric sensor. The effective measurements of rigidity modulus G for different materials were experimentally achieved, we obtained respectively 1.4464.10¹⁰ N/m², 0.99417.10⁹ N/m² and 1.0395.10¹¹ N/m² for Aluminum, PMMA and Steel. The study has demonstrated the effective usefulness of our method for evaluating the rigidity modulus. A good agreement between the theoretical and experimental results was achieved. This study permit to design and elaborate a new type of optical torque sensor for electrical power assisted steering system.

Citation Download Citation

Nicolas Javahiraly and Cédric Perrotton "Solid material rigidity modulus measurements by a nondestructive optical method: application to electrical steering system", Proc. SPIE 8368, Photonic Applications for Aerospace, Transportation, and Harsh Environment III, 83680Q (10 May 2012); https://doi.org/10.1117/12.920595

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