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Speckle photographic strain field measurement. A helpful aid in fracture modelling and analysis of microstructures

 
: Vogel, D.; Sommer, J.-P.; Michel, B.

Schwalbe, K.H.; Berger, C. ; Engineering Materials Advisory Services Ltd. -EMAS-, Cradley Heath; Deutscher Verband für Materialforschung und -prüfung e.V. -DVM-, Berlin:
Structural Integrity - Experiments, Models, Applications. Proceedings of the 10th Biennial European Conference on Fracture
West Midlands: EMAS Publications, 1994
ISBN: 0-947817-73-5
pp.210-215
European Conference on Fracture (ECF) <10, 1994, Berlin>
English
Conference Paper
Fraunhofer IZM ()
experimental mechanics; fracture mechanics; image processing; laser metrology; micromechanics; speckle photography

Abstract
By means of speckle photography displacements and strains of fracture specimen are measured methods of digital image processing are applied. The strain field of a CT specimen is measured in a small region around the cracktip. The method was also applied to an unnotched Al2O3 ceramic specimen.

: http://publica.fraunhofer.de/documents/PX-34407.html