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Characterization of damaged composite laminates by an optical measurement of the displacement field
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
Institut Jean Lamour, (SI2M).
2012 (English)In: 6th EEIGM International Conference Advanced Materials Research: 7th and 8th November, 2011 EEIGM, Nancy, France, Bristol: IOP Publishing Ltd , 2012Conference paper (Refereed)
Abstract [en]

The degradation of the elastic properties of composite laminates with intralaminar cracks is caused by reduced stress in the damaged layer which is mainly due to two parameters: the crack opening displacement (COD) and the crack sliding displacement (CSD). In this paper these parameters are measured experimentally providing laminate stiffness reduction models with valuable information for validation of used assumptions and for defining limits of their application. In particular, the displacement field on the edges of a [0/ +704/ −704]s glass fiber/epoxy laminate specimens with multiple intralaminar cracks is studied and the COD and CSD dependence on the applied mechanical load is measured. The specimen full-field displacement measurement is carried out using ESPI (Electronic Speckle Pattern Interferometry). By studying the displacement discontinuities, the crack face displacements were measured. A comparison between the COD and the CSD (for the same crack) is performed

Place, publisher, year, edition, pages
Bristol: IOP Publishing Ltd , 2012.
, I O P Conference Series: Materials Science and Engineering, ISSN 1757-8981 ; 31
Research subject
Polymeric Composite Materials
URN: urn:nbn:se:ltu:diva-26780DOI: 10.1088/1757-899X/31/1/012004Local ID: 005b3d16-bd48-4efe-a440-a5e5d81e4051OAI: diva2:999960
EEIGM International Conference on Advanced Materials Research : 11/06/2015 - 12/06/2015
Validerad; 2012; Bibliografisk uppgift: Article number 012004 ; 20111206 (ysko)Available from: 2016-09-30 Created: 2016-09-30Bibliographically approved

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