29 July 2002 Preliminary evaluation of the Optical Rosette: a portable device for stress measurement with ESPI
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Proceedings Volume 4900, Seventh International Symposium on Laser Metrology Applied to Science, Industry, and Everyday Life; (2002) https://doi.org/10.1117/12.484505
Event: Seventh International Symposium on Laser Metrology Applied to Science, Industry, and Everyday Life, 2002, Novosibirsk, Russian Federation
Abstract
This paper presents a new kind of portable device, named Optical Rosette, suitable for on-field stress measurement using a Radial In-Plane (RIP) Interferometer and Electronic Speckle Pattern Interferometry (ESPI). This device is capable to replace a conventional strain gauge rosette with many advantages. Since this device is sensitive to the in-plane radial displacement component, both in-plane translations, and the complete stress state at a given point, can easily be measured simultaneous and accurately. The basic measurement principles, as well as the mathematical models for rigid body displacements, strains and stresses measurement, are presented. A prototype of the Optical Rosette was built and its performance was preliminarily evaluated in laboratory conditions and on-field measurement.
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Armando Albertazzi, Armando Albertazzi, Daniel Willemann, Daniel Willemann, Celso L. N. Veiga, Celso L. N. Veiga, } "Preliminary evaluation of the Optical Rosette: a portable device for stress measurement with ESPI", Proc. SPIE 4900, Seventh International Symposium on Laser Metrology Applied to Science, Industry, and Everyday Life, (29 July 2002); doi: 10.1117/12.484505; https://doi.org/10.1117/12.484505
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