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Characterization of damage evolution in thermo-echanical loading of composites materials
Division of Materials Science, Luleå University of Technology, Luleå, Sweden.
Institut Jean Lamour, Nancy Universite, France.
Division of Materials Science, Luleå University of Technology, Luleå, Sweden.ORCID iD: 0000-0001-9649-8621
Institut Jean Lamour, Nancy Universite.
2009 (English)In: Book of abstracts: 5th EEIGM International Conference on Advanced Materials Research, November 4-5, 2009, Nancy, France, 2009Conference paper, Oral presentation with published abstract (Refereed)
Abstract [en]

In the experimental part, the displacement field on the edges of a [0, 554, -554]s GF/EP laminate and [302,-602]s GF/EP laminate specimens with multiple transverse cracks is visualized and analyzed on dependence of the applied mechanical load by using ESPI(Electronic Speckle Pattern Interferometry).The different displacement profiles along the tensile-axis are drawn along the specimen edges at several distances from the mid-plane corresponding to the different plies. The measurements out-of-plane deformations are effected to determine and to compare the crack opening displacement (COD) with the crack face sliding displacement (CSD). In the numerical part, the strong dependence of the average normalized (COD) on the relative stiffness and thickness of the surrounding layers, based on FE results, is described by a simple empirical expression for non-interactive cracks. The FEM simulation results obtained by ABAQUS/CAE are compared with the general expressions for calculation of elastic constants of the damaged laminate developed by Lundmark and Varna [1]. The effect of crack interaction on the crack opening displacement (COD) is also discussed in this study. The effect on (COD) is described by the introduced “interaction function” which is determined using FE analysis.

Place, publisher, year, edition, pages
2009.
National Category
Composite Science and Engineering
Research subject
Polymeric Composite Materials
Identifiers
URN: urn:nbn:se:liu:diva-150433Local ID: 298c26d1-6f1d-4807-8996-32046b452866OAI: oai:DiVA.org:liu-150433DiVA, id: diva2:1241334
Conference
5th EEIGM International Conference on Advanced Materials Research, November 4-5, 2009, Nancy, France
Available from: 2018-08-23 Created: 2018-08-23 Last updated: 2018-08-23

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Loukil, Mohamed Sahbi

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