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Thermoelastic constants of symmetric laminates with cracks in 90-layer: application of simple models
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
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2013 (English)In: Plastics, rubber and composites, ISSN 1465-8011, E-ISSN 1743-2898, Vol. 42, no 4, p. 157-166Article in journal (Refereed) Published
Abstract [en]

The change of thermoelastic properties of cross-ply and quasi-isotropic laminates with intralaminar cracks in layers is analysed. Predictions are performed using previously derived general expressions for stiffness of symmetric damaged laminates as dependent on crack density and crack face opening and sliding. It is shown that the average crack opening displacement can be linked with the average value of axial stress perturbation between two cracks. Using this relationship, analytical shear lag and Hashin’s models, developed for axial modulus, can be applied for calculating thermal expansion coefficients, in-plane moduli and Poisson’s ratios of damaged laminates. The approach is evaluated using finite element method and it is shown that the accuracy is rather similar to that in axial modulus calculation.

Place, publisher, year, edition, pages
2013. Vol. 42, no 4, p. 157-166
National Category
Composite Science and Engineering
Research subject
Polymeric Composite Materials
Identifiers
URN: urn:nbn:se:ltu:diva-10260DOI: 10.1179/1743289811Y.0000000064ISI: 000318218300005Scopus ID: 2-s2.0-84876901876Local ID: 909252bf-e5cc-45b7-9b6c-c8a2379a397fOAI: oai:DiVA.org:ltu-10260DiVA, id: diva2:983201
Note
Validerad; 2013; 20130308 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Loukil, Mohamed SahbiPupurs, AndrejsVarna, Janis

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