Desensitized TV holography applied to static and vibrating objects for large deformation measurements

Henrik O. Saldner; Nils-Erik Molin; Nandigana K. Krishna Mohan

doi:10.1117/12.276325

17 July 1996 Desensitized TV holography applied to static and vibrating objects for large deformation measurements

Henrik O. Saldner, Nils-Erik Molin, Nandigana K. Krishna Mohan

Proceedings Volume 2860, Laser Interferometry VIII: Techniques and Analysis; (1996) https://doi.org/10.1117/12.276325
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

This paper illustrates a real time desensitized outof-p1ane displacement configuration for the measurement of large deformations of a diffusely reflecting object. The optical configuration is implemented to study the behavior of engineering structures subjected to large static as well as vibration deflections. Phase stepping is provided in the optical set-up to obtain the deformation maps from the interferograms. For vibration analysis, the possibility of incorporating both phase stepping and bias vibration on a single mirror is also demonstrated. Theoretical analysis along with experimental results are presented.

Citation Download Citation

Henrik O. Saldner, Nils-Erik Molin, and Nandigana K. Krishna Mohan "Desensitized TV holography applied to static and vibrating objects for large deformation measurements", Proc. SPIE 2860, Laser Interferometry VIII: Techniques and Analysis, (17 July 1996); https://doi.org/10.1117/12.276325

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