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This study reports on the development of an integrated mechanical test setup that employs digital speckle pattern interferometry (DSPI) for non-contact, full-field measurement of the deformation of small specimens. Selection of modern optical components, advanced image acquisition and communications hardware, custom developed software and a suitable mechanical test machine has allowed the realization of a compact, user-friendly test system. Specimen loading, optical inspection, image processing and data-acquisition are fully automated which simplifies the testing procedure and improves the overall reliability of the test results. By using a sensitive full-field optical metrology technique in combination with standard load-deflection data acquisition, complex material behaviour can be investigated more effectively in comparison to standard test techniques.

Additional information

Authors: WHELAN M P, JRC Ispra (IT);LANGOFF A, JRC Ispra (IT);LUCIA A C, JRC Ispra (IT)
Bibliographic Reference: Paper presented: 11th International Conference on Experimental Mechanics, Surrey (GB); August 24-28, 1998
Availability: Available from (1) as Paper EN 41619 ORA
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