Preliminary evaluation of the Optical Rosette: a portable device for stress measurement with ESPI

Armando Albertazzi Jr.; Daniel Willemann; Celso L. N. Veiga

doi:10.1117/12.484505

29 July 2002 Preliminary evaluation of the Optical Rosette: a portable device for stress measurement with ESPI

Armando Albertazzi Jr., Daniel Willemann, Celso L. N. Veiga

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.

Citation Download Citation

Armando Albertazzi Jr., Daniel Willemann, and 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); https://doi.org/10.1117/12.484505

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