Estimating the average size of fiber/matrix interface cracks in UD and cross-ply laminates

Proceedings

Document identifier: oai:DiVA.org:ltu-76254
Keyword: Engineering and Technology, Materials Engineering, Composite Science and Engineering, Teknik och teknologier, Materialteknik, Kompositmaterial och -teknik, Fiber Reinforced Polymer (FRP), Debonding, Linear Elastic Fracture Mechanics (LEFM), Polymeric Composite Materials, Polymera kompositmaterial
Publication year: 2019
Relevant Sustainable Development Goals (SDGs):
SDG 9 Industry, innovation and infrastructure
The SDG label(s) above have been assigned by OSDG.ai

Abstract:

Initiation and propagation of fiber/matrix interface cracks are analyzed in Representative Volume Elements (RVEs) of UD and cross-ply laminates. By studying the distribution of stresses at the fiber/matrix interface in the undamaged case, an estimate of the initial flaw size is derived. By adopting a 2-parameters energy-based criterion for propagation [1], we then proceed to the estimation of the expected debond size in different microstructural arrangements. Finally, the results are compared with microscopic observations available in the literature [2].

Authors

Luca Di Stasio

Luleå tekniska universitet; Materialvetenskap; Université de Lorraine, EEIGM, IJL, 6 Rue Bastien Lepage, F-54010 Nancy, France
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Janis Varna

Luleå tekniska universitet; Materialvetenskap
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Zoubir Ayadi

Université de Lorraine, EEIGM, IJL, 6 Rue Bastien Lepage, F-54010 Nancy, France
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