Mechanical testing using digital speckle photography

Per Synnergren; Mikael Sjoedahl

doi:10.1117/12.498442

7 March 2006 Mechanical testing using digital speckle photography

Per Synnergren, Mikael Sjoedahl

Proceedings Volume 4101, Laser Interferometry X: Techniques and Analysis; (2006) https://doi.org/10.1117/12.498442
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

Abstract

Some recent applications of stereoscopic and two-dimensional digital speckle photography in experimental mechanics are presented. The examples include uses of both laser speckles and white light speckles. Topics covered are: control of the flow front when manufacturing fibre reinforced polymer composites by a closed molding process, measurement of internal deformations at high strain rates, and in opaque specimens, using flashed x-ray radiation. It is also shown how defocused laser speckles can be used to measure in-plane strain fields without the need of numerical differentiation and how laser speckles can be used to monitor the extent of the plastic zone in materials.

Citation Download Citation

Per Synnergren and Mikael Sjoedahl "Mechanical testing using digital speckle photography", Proc. SPIE 4101, Laser Interferometry X: Techniques and Analysis, (7 March 2006); https://doi.org/10.1117/12.498442

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