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Use of full-field measurements to evaluate analytical models for laminates with intralaminar cracks
Laboratoire d’Energètique et de Mécanique Théorique et Appliquee, Vandoeuvre Lés Nancy Cedex.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0001-9649-8621
Institut Jean Lamour, Nancy Cedex.
2012 (English)In: Applied Composite Materials, ISSN 0929-189X, E-ISSN 1573-4897, Vol. 46, no 21, p. 2739-2752Article in journal (Refereed) Published
Abstract [en]

Full-field displacement measurements between intralaminar cracks in cross-ply laminates were performed to evaluate the accuracy of shear lag models and Hashin’s model. The dependence of the average crack opening displacement on the crack density was measured and compared with model predictions. It was found that Hashin’s model overestimates the average COD by at least 25%. The value of the shear lag parameter was back-calculated by fitting. With the same goal the strain in the middle between two cracks was measured rendering shear lag parameter which was only 1% different. The found value does not agree with any of the used shear lag models. Measurement shows nonzero intralaminar shear zones in both layers covering a part of the ply thickness.

Place, publisher, year, edition, pages
2012. Vol. 46, no 21, p. 2739-2752
National Category
Composite Science and Engineering
Research subject
Polymeric Composite Materials
Identifiers
URN: urn:nbn:se:ltu:diva-5454DOI: 10.1177/0021998311431996Local ID: 38f39c79-ab28-4bb7-928a-fac6f57409e9OAI: oai:DiVA.org:ltu-5454DiVA: diva2:978328
Note
Validerad; 2012; 20120126 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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