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Proceedings Paper

Mechanical testing using digital speckle photography
Author(s): Per Synnergren; Mikael Sjoedahl
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Paper 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.

Paper Details

Date Published: 7 March 2006
PDF: 10 pages
Proc. SPIE 4101, Laser Interferometry X: Techniques and Analysis, (7 March 2006); doi: 10.1117/12.498442
Show Author Affiliations
Per Synnergren, Lulea Univ. of Technology (Sweden)
Mikael Sjoedahl, Lulea Univ. of Technology (Sweden)

Published in SPIE Proceedings Vol. 4101:
Laser Interferometry X: Techniques and Analysis
Gordon M. Brown; Malgorzata Kujawinska; Werner P. O. Jueptner; Ryszard J. Pryputniewicz; Ryszard J. Pryputniewicz; Mitsuo Takeda, Editor(s)

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