Phase-stepped deflectometry applied to shape measurement of bent plates

This paper describes an optical method based on deflectometry to measure the slope fields on the whole surface of a plate specimen under bending testing. The phase-stepping procedure used provides an excellent sensitivity on the slope measurement, which was measured and found to be better than 2.5 m...

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Veröffentlicht in:	Experimental mechanics 1999-03, Vol.39 (1), p.66-70
Hauptverfasser:	SURREL, Y, FOURNIER, N, GREDIAC, M, PARIS, P.-A
Format:	Artikel
Sprache:	eng
Schlagworte:	Exact sciences and technology Fundamental areas of phenomenology (including applications) Measurement and testing methods Measurement methods and techniques in continuum mechanics of solids Physics Solid mechanics Structural and continuum mechanics
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Beschreibung
Zusammenfassung:	This paper describes an optical method based on deflectometry to measure the slope fields on the whole surface of a plate specimen under bending testing. The phase-stepping procedure used provides an excellent sensitivity on the slope measurement, which was measured and found to be better than 2.5 mult 10 exp -5 rad. Experimental results are presented along with finite element simulations. Materials: Al and glass/epoxy.
ISSN:	0014-4851 1741-2765
DOI:	10.1007/BF02329303