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Measurement of cohesive laws for interlaminar failure of CFRP
University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre. (Mechanics of Materials (MechMat), Materialmekanik)
University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre. (Mechanics of Materials (MechMat), Materialmekanik)
University of Skövde, School of Engineering Science. (Mechanics of Materials (MechMat), Materialmekanik)ORCID iD: 0000-0001-8335-0855
University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre. (Mechanics of Materials (MechMat), Materialmekanik)ORCID iD: 0000-0003-0787-4942
2014 (English)In: Composites Science And Technology, ISSN 0266-3538, E-ISSN 1879-1050, Vol. 100, 53-62 p.Article in journal (Refereed) Published
Place, publisher, year, edition, pages
Elsevier, 2014. Vol. 100, 53-62 p.
Keyword [en]
Polymer–matrix composites (PMCs), Delamination, Finite element analysis (FEA), Digital image correlation (DIC)
National Category
Applied Mechanics
Research subject
Technology
Identifiers
URN: urn:nbn:se:his:diva-9559DOI: 10.1016/j.compscitech.2014.05.031ISI: 000340222400008Scopus ID: 2-s2.0-84902333949OAI: oai:DiVA.org:his-9559DiVA: diva2:727601
Projects
Keks och Effekt
Available from: 2014-06-23 Created: 2014-06-23 Last updated: 2016-04-27Bibliographically approved
In thesis
1. On Cohesive Modelling ofCarbon/Epoxy Composites: Delamination and Fibre Compressive Failure
Open this publication in new window or tab >>On Cohesive Modelling ofCarbon/Epoxy Composites: Delamination and Fibre Compressive Failure
2015 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Carbon Fibre Reinforced Polymers are widely used in engineering applications where weight saving and high mechanical performance are a key factors. However, an inheren tweakness of laminated CFRP:s is there relatively low resistance to delamination. Therst part of this thesis is devoted to extract cohesive laws associated with delamination.The method is based on fracture mechanical tests and measurement of the displacementeld close to the crack tip. The second part of the thesis is concerned with mixed modecohesive modelling under small scale yielding conditions. Under such loading conditions,a robust cohesive model should conform to Linear Elastic Fracture Mechanics (LEFM). Itis shown that two design rules for mixed mode cohesive laws are sucient to achieve thisproperty. The third part focuses a failure mode entirely dierent from delamination. Theobjective is to determine cohesive laws associated with longitudinal compressive failure.Equilibrium of congurational forces is used for this purpose. Identied congurationalforces are continuously measured by monitoring the displacements eld on the specimen'slateral surface. This allows for identication of the cohesive law.

Place, publisher, year, edition, pages
Göteborg: Chalmers University of Technology, 2015
Series
Doktorsavhandlingar vid Chalmers tekniska högskola, ISSN 0346-718X ; Ny serie nr. 3895
Keyword
CFRP, Cohesive zone model, J-integral, LEFM, Delamination, Compressive failure
National Category
Applied Mechanics
Research subject
Technology
Identifiers
urn:nbn:se:his:diva-10996 (URN)978-91-7597-214-5 (ISBN)
Public defence
2015-06-04, EA, Chalmers, Göteborg, 10:00 (English)
Opponent
Supervisors
Projects
MDC
Available from: 2015-06-05 Created: 2015-06-05 Last updated: 2016-01-12Bibliographically approved

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