Applications of recently improved electronic speckle pattern interferometry by addition of incremental images

Manfred H. F. Hertwig; Thierry Floureux; Torsten Flemming

doi:10.1117/12.195901

12 December 1994 Applications of recently improved electronic speckle pattern interferometry by addition of incremental images

Manfred H. F. Hertwig, Thierry Floureux, Torsten Flemming

Author Affiliations +

Proceedings Volume 2340, Interferometry '94: New Techniques and Analysis in Optical Measurements; (1994) https://doi.org/10.1117/12.195901
Event: International Conference on Interferometry '94, 1994, Warsaw, Poland

Abstract

This paper demonstrates the advantages of a recently reported improved technique of phase- shifted electronic speckle interferometry. The improvement extends the range and enhances the accuracy of measurements and thus unlocks many new applications. One of these is detecting various types of fatigue damage in carbon-fiber-reinforced plastics (CFRP). The optical measurements of surface matrix cracks and of delaminations agree very well with the results of other non-destructive testing (NDT) methods. We also demonstrate an improved contouring technique and present the theory behind the experimental procedure, leading to the improved results reported here.

Citation Download Citation

Manfred H. F. Hertwig, Thierry Floureux, and Torsten Flemming "Applications of recently improved electronic speckle pattern interferometry by addition of incremental images", Proc. SPIE 2340, Interferometry '94: New Techniques and Analysis in Optical Measurements, (12 December 1994); https://doi.org/10.1117/12.195901

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