Measurement of contact stresses using real-time shearing interferometry

Liming Xu; Hareesh V. Tippur; Carl-Ernst Rousseau

doi:10.1117/1.602243

1 November 1999 Measurement of contact stresses using real-time shearing interferometry

Liming Xu, Hareesh V. Tippur, Carl-Ernst Rousseau

Optical Engineering, Vol. 38, Issue 11, (November 1999). https://doi.org/10.1117/1.602243

The optical method coherent gradient sensing, a real-time lateral shearing interferometry, is proposed for measuring contact stress fields under static and dynamic loading conditions. Feasibility of the method is first established under quasi-static conditions. Under dynamic conditions, the method has been used in conjunction with high-speed photography. The interference patterns representing stress gradients are used for extracting impact load history. Loading rates of approximately 14 MN/sec have been observed. The optical measurements are compared with the computed values obtained using finite element simulations.

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Liming Xu, Hareesh V. Tippur, and Carl-Ernst Rousseau "Measurement of contact stresses using real-time shearing interferometry," Optical Engineering 38(11), (1 November 1999). https://doi.org/10.1117/1.602243

Published: 1 November 1999

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