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An experimental data reduction method for the Mixed Mode Bending test based on the J-integral approach

The Mixed Mode Bending test (MMB) is suitable for measuring the interlaminar fracture toughness of composite materials under mixed-mode loading. Data reduction is usually based on the assumptions of Linear Elastic Fracture Mechanics, which are not fulfilled in configurations involving large scale fracture, such as in adhesive joints. In this work, a J-integral-based method that can be applied in presence of large fracture process zones is presented. The proposed method requires less input information and avoids crack length monitoring during the test, which reduces the uncertainty of the results as compared to traditional methods. The method is shown to accurately compute the fracture toughness in a delamination test campaign and to provide results with lower uncertainty than those of the ASTM standard method

The authors also acknowledge the support of the Spanish government through the Ministerio de Economía y Competitividad under the contracts DPI2012-34465 and MAT2012-37552-C03-03

© Composites Science and Technology, 2015, vol. 117, p. 85-91

Elsevier

Author: Sarrado Molina, Carlos
Turon Travesa, Albert
Renart Canalias, Jordi
Costa i Balanzat, Josep
Date: 2015 September 29
Abstract: The Mixed Mode Bending test (MMB) is suitable for measuring the interlaminar fracture toughness of composite materials under mixed-mode loading. Data reduction is usually based on the assumptions of Linear Elastic Fracture Mechanics, which are not fulfilled in configurations involving large scale fracture, such as in adhesive joints. In this work, a J-integral-based method that can be applied in presence of large fracture process zones is presented. The proposed method requires less input information and avoids crack length monitoring during the test, which reduces the uncertainty of the results as compared to traditional methods. The method is shown to accurately compute the fracture toughness in a delamination test campaign and to provide results with lower uncertainty than those of the ASTM standard method
The authors also acknowledge the support of the Spanish government through the Ministerio de Economía y Competitividad under the contracts DPI2012-34465 and MAT2012-37552-C03-03
Format: application/pdf
ISSN: 0266-3538
Document access: http://hdl.handle.net/10256/13731
Language: eng
Publisher: Elsevier
Collection: MINECO/PN 2013-2015/DPI2012-34465
MINECO/PN 2013-2015/MAT2012-37552-C03-03
Reproducció digital del document publicat a: http://dx.doi.org/10.1016/j.compscitech.2015.05.021
Articles publicats (D-EMCI)
Is part of: © Composites Science and Technology, 2015, vol. 117, p. 85-91
Rights: Tots els drets reservats
Subject: Adhesius
Adhesives
Mecànica de fractura
Fracture mechanics
Assaigs de materials
Materials -- Testing
Resistència de materials
Strength of materials
Title: An experimental data reduction method for the Mixed Mode Bending test based on the J-integral approach
Type: info:eu-repo/semantics/article
Repository: DUGiDocs

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