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Mesoscale analysis of the transverse cracking kinetics in woven composite laminates using a phase-field fracture theory
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Mechanics.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Mechanics.
2019 (English)In: Engineering Fracture Mechanics, ISSN 0013-7944, E-ISSN 1873-7315, Vol. 216, article id 106523Article in journal (Refereed) Published
Abstract [en]

A phase-field approach to fracture is used to simulate transverse cracking kinetics in composite laminates. First, a typical unidirectional tape laminate is modeled and the transverse cracking evolution with the consequent reduction in the in-plane modulus of elasticity is estimated. Then, a four-layered plain weave composite is modeled using different layer shifting configurations. Predictions in the transverse cracking evolution become improved as the shifting configuration of the laminate model become closer to experimental observations. Simulations predict that some cracks do not form perpendicularly to the loading direction, as it has been observed experimentally in similar locations. Only the fracture toughness and the in situ transverse strength of the ply are required without prior knowledge of the position of the cracks or an ad hoc criterion for crack evolution. All the simulations are compared qualitatively and quantitatively to experiments published elsewhere.

Place, publisher, year, edition, pages
2019. Vol. 216, article id 106523
Keywords [en]
Composites, Fibre reinforced materials, Fracture mechanics, Damage mechanics, Crack growth
National Category
Applied Mechanics
Research subject
Engineering science with specialization in Applied Mechanics
Identifiers
URN: urn:nbn:se:uu:diva-388533DOI: 10.1016/j.engfracmech.2019.106523ISI: 000477573000028OAI: oai:DiVA.org:uu-388533DiVA, id: diva2:1333670
Available from: 2019-07-01 Created: 2019-07-01 Last updated: 2019-09-20Bibliographically approved
In thesis
1. On numerical analyses of woven composite laminates: Homogenization, damage and fracture
Open this publication in new window or tab >>On numerical analyses of woven composite laminates: Homogenization, damage and fracture
2019 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

This dissertation analyzes various mechanical properties of textile reinforced composite laminates.

The dissertation is based on a total of six published works, which are essentially numerical, although experimental elements are available. The numerical methods used are based on high-resolution finite element models in combination with sophisticated phase-field theories for brittle fracture. A key result is that important mechanical properties in engineering applications, such as fracture or damage resistance, can be substantially affected by the arrangement of the constituent materials at the meso level.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2019. p. 53
Series
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1651-6214 ; 1828
National Category
Applied Mechanics Aerospace Engineering Composite Science and Engineering Textile, Rubber and Polymeric Materials
Research subject
Engineering science with specialization in Applied Mechanics
Identifiers
urn:nbn:se:uu:diva-388808 (URN)978-91-513-0699-5 (ISBN)
Public defence
2019-09-13, Siegbahnsalen, The Ȧngström Laboratory, Lägerhuddsvägen 1, Uppsala, 09:15 (English)
Opponent
Available from: 2019-08-22 Created: 2019-07-05 Last updated: 2019-09-17Bibliographically approved

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Espadas-Escalante, Juan JoséIsaksson, Per

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