A global digital image correlation enhanced full-field bulge test method

J. Neggers, J.P.M. Hoefnagels, F. Hild, S. Roux, M.G.D. Geers

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Abstract

The miniature bulge test is a known method for characterizing the full stress-strain response of freestanding thin films. However, some discrepancies between quantitative results in the literature may be attributed to erroneous assumptions on the bulge shape. In this research, a specialized global Digital Image Correlation technique is developed that circumvents the need for bulge shape assumptions by correlating directly high-resolution profilometry maps of bulged membranes to yield full-field continuous displacement maps, from which local strain maps can be computed. Additionally, local curvature maps are also derived.
Original languageEnglish
Title of host publicationProceedings IUTAM Symposium on Full-field Measurements and Identification in Solid Mechanics, 4-8 July 2011, Cachan, France
EditorsH. Espinosa, F. Hild
Place of PublicationAmsterdam
PublisherElsevier
Pages73-81
DOIs
Publication statusPublished - 2012
EventUTAM Symposium on Full-field Measurements and Identification in Solid Mechanics, 4-8 July 2011, Cachan, France - Cachan, France
Duration: 4 Jul 20118 Jul 2011

Conference

ConferenceUTAM Symposium on Full-field Measurements and Identification in Solid Mechanics, 4-8 July 2011, Cachan, France
Country/TerritoryFrance
CityCachan
Period4/07/118/07/11

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