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Damage characterization of a cross-ply carbon fiber/epoxy laminate by an optical measurement of the displacement field
Nancy Université-INPL.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0001-9649-8621
Nancy Université-INPL.
2010 (English)In: Composites Science And Technology, ISSN 0266-3538, E-ISSN 1879-1050, Vol. 70, no 1, p. 94-101Article in journal (Refereed) Published
Abstract [en]

Using Electronic Speckle Pattern Interferometry (ESPI), full-field displacement measurement was performed on the edge of a cracked cross-ply graphite/epoxy laminate subjected to a tensile loading. The displacement jumps corresponding to cracks are clearly visible and can be used to determine the Crack Opening Displacement (COD) values along the cracks. The main objective of this study is to determine if the application of successive loads of increasing magnitude may have modified the existing cracks and thereby changed the COD dependence on the applied stress. Moreover, we have tested the applicability of the assumed linear elastic COD behavior in the presence of very high stress concentration at the crack tips. The profile of the opening along the crack was also studied.

Place, publisher, year, edition, pages
2010. Vol. 70, no 1, p. 94-101
National Category
Composite Science and Engineering
Research subject
Polymeric Composite Materials
Identifiers
URN: urn:nbn:se:ltu:diva-3309DOI: 10.1016/j.compscitech.2009.09.010ISI: 000272940300011Scopus ID: 2-s2.0-70450224461Local ID: 11d50330-a399-11de-8293-000ea68e967bOAI: oai:DiVA.org:ltu-3309DiVA, id: diva2:976166
Note
Validerad; 2010; 20090917 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Varna, Janis

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