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An energy based failure criterion for matrix crack induced delamination in laminated composite structures

Available failure criteria for the design of laminated composite structures do not explicitly take into account the occurrence of delaminations induced by matrix cracks. However, depending on the material properties, laminate stacking sequence and ply thickness, this failure mode may appear and compromise the structural integrity of the structure. In this work, a failure criterion for predicting matrix cracking induced delamination in laminated composites is presented. The failure criterion is developed within the framework of Fracture Mechanics, by comparing the energy release rate available for delamination extension near a matrix crack and the fracture toughness of the interface. The predicted failure loads agree well with experimental data available in the literature, thus supporting the introduction of this failure criterion into the set of failure criteria usually considered in composite鈥檚 structural design

This work was funded by AIRBUS under the project iComp - integrated method for the structural design of Composite components. The authors gratefully acknowledge the support provided by AIRBUS. In addition, the support of the Spanish government through DG-CICYT under Contract DPI2012-34465 and MAT2012-37552-C03-03, is acknowledged

Elsevier

Author: Zubillaga Eceiza, Lierni
Turon Travesa, Albert
Maim铆 Vert, Pere
Costa i Balanzat, Josep
Mahdi, Stephane
Linde, Peter
Abstract: Available failure criteria for the design of laminated composite structures do not explicitly take into account the occurrence of delaminations induced by matrix cracks. However, depending on the material properties, laminate stacking sequence and ply thickness, this failure mode may appear and compromise the structural integrity of the structure. In this work, a failure criterion for predicting matrix cracking induced delamination in laminated composites is presented. The failure criterion is developed within the framework of Fracture Mechanics, by comparing the energy release rate available for delamination extension near a matrix crack and the fracture toughness of the interface. The predicted failure loads agree well with experimental data available in the literature, thus supporting the introduction of this failure criterion into the set of failure criteria usually considered in composite鈥檚 structural design
This work was funded by AIRBUS under the project iComp - integrated method for the structural design of Composite components. The authors gratefully acknowledge the support provided by AIRBUS. In addition, the support of the Spanish government through DG-CICYT under Contract DPI2012-34465 and MAT2012-37552-C03-03, is acknowledged
Document access: http://hdl.handle.net/2072/254147
Language: eng
Publisher: Elsevier
Rights: Tots els drets reservats
Subject: Materials compostos -- Deslaminatge
Composite materials -- Delamination
Materials laminats
Laminated materials
Assaigs de materials
Materials -- Testing
Materials compostos -- M猫todes de simulaci贸
Composite materials -- Simulation methods
Title: An energy based failure criterion for matrix crack induced delamination in laminated composite structures
Type: info:eu-repo/semantics/article
Repository: Recercat

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