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Mode decoupling in interlaminar fracture toughness tests on bimaterial specimens

The double cantilever beam (DCB) and end-notched flexure (ENF) tests are the standard ones for determining the interlaminar fracture toughness of composites in opening and shearing, respectively. The same tests are commonly used to characterize the mode I and mode II interfacial fracture of adhesive joints. Apart from these classical material cases, there is a growing interest recently in determining the fracture toughness of, for instance, asymmetrically delaminated composites or dissimilar adhesive joints. For this purpose, laboratory coupons are being used that feature a material or thickness asymmetry with respect to the crack plane. This asymmetry introduces mixed-mode I/II fracture to the specimen, even if the same is loaded in pure mode I or pure mode II

Universitat de Girona. Grup de Recerca en Anàlisi i Materials Avançats per al Disseny Estructural (AMADE)

Author: Mujika, Faustino
Tsokanas, Panayiotis
Arrese Arratibel, Ainhoa
Silva, Lucas Filipe Martins da
Date: 2023 May 31
Abstract: The double cantilever beam (DCB) and end-notched flexure (ENF) tests are the standard ones for determining the interlaminar fracture toughness of composites in opening and shearing, respectively. The same tests are commonly used to characterize the mode I and mode II interfacial fracture of adhesive joints. Apart from these classical material cases, there is a growing interest recently in determining the fracture toughness of, for instance, asymmetrically delaminated composites or dissimilar adhesive joints. For this purpose, laboratory coupons are being used that feature a material or thickness asymmetry with respect to the crack plane. This asymmetry introduces mixed-mode I/II fracture to the specimen, even if the same is loaded in pure mode I or pure mode II
Format: application/pdf
Citation: info:eu-repo/semantics/reference/hdl/10256.1/7286
Document access: http://hdl.handle.net/10256/23146
Language: eng
Publisher: Universitat de Girona. Grup de Recerca en Anàlisi i Materials Avançats per al Disseny Estructural (AMADE)
Rights: Tots els drets reservats
Subject: Resistència de materials -- Congressos
Strength of materials -- Congresses
Assaigs de materials -- Congressos
Materials -- Testing -- Congresses
Mecànica de fractura -- Congressos
Fracture mechanics -- Congresses
Materials compostos -- Fractura -- Congressos
Composite materials -- Fracture -- Congresses
Title: Mode decoupling in interlaminar fracture toughness tests on bimaterial specimens
Type: slide
Repository: DUGiDocs

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