Mode II stress-intensity factors for cracked wood beams

Barrett, J. D.; Foschi, Ricardo O.

doi:10.1016/0013-7944(77)90029-7

Cited by 155 publications

(47 citation statements)

References 4 publications

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“…concepts (Barret and Foschi, 1977;Chai, 1988). Chiang and Chai (1994) studied the plasticity in the adhesive layer near the static crack-tip of elastic E.N.F adhesive joints using large-strain finite-element analyses.…”

Section: Introductionmentioning

confidence: 99%

Elastic–plastic mode-II fracture of adhesive joints

Yang

Thouless

Ward

2001

International Journal of Solids and Structures

154

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A numerical study of the elastic-plastic mode-II fracture of adhesive joints is presented in this paper. A traction-separation law was used to simulate the mode-II interfacial fracture of adhesively-bonded end-notched flexure (E.N.F.) specimens loaded in three-point bending, with extensive plastic deformation accompanying failure. The fracture parameters for the traction-separation law were determined by comparing the numerical and experimental results for one particular geometry. These parameters were then used without further modification to simulate the fracture of other E.N.F. specimens with different geometries. It was found that the numerical predictions for the loads and deformation were in excellent agreement with the corresponding experimental results.

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Section: Introductionmentioning

confidence: 99%

Elastic–plastic mode-II fracture of adhesive joints

Yang

Thouless

Ward

2001

International Journal of Solids and Structures

154

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“…The pure mode II values GIIc were found using the same type of specimen but subjected to three point bending; this type of test is called an end-notch flexure (ENF) test. 2,3 . However, the mode I and mode II components of mixedmode fracture toughness (GIc m andGIIc m , respectively) were generated using cracked-lap shear (CLS) and edge-delamination tension (EDT) specimens.…”

Section: Introductionmentioning

confidence: 99%

Mixed-mode bending method for delamination testing

1990

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A mixed-mode delamination test procedure was developed combining double cantilever beam (DCB) mode I loading and end-notch fixture (ENF) mode II loading on a split unidirectional laminate. By loading with a lever, a single applied load simultaneously produces mode I and mode II bending loads on the specimen. This mixed-mode bending (MMB) test was analyzed using both finite-element procedures and beam theory to calculate the mode I and mode II components of strain-energy release rate G I and G II , respectively. A wide range of G I /G II ratios can be produced by varying the load position on the lever. As the delamination extended, the G I /G II ratios varied by less than 5%. Beam theory equations agreed closely with the finite-element results and provide a basis for selection of G I /G II test ratios and a basis for computing the mode I and mode II components of measured delamination toughness. The MMB test was demonstrated using AS4/PEEK (APC2) unidirectional laminates. The MMB test introduced in this paper is rather simple and is believed to offer several advantages over most current mixed-mode test.

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“…The most popular one is the End Notched Flexure (ENF), which was developed for wood fracture characterization (Barrett and Foschi, 1977). The test consists on a pre-cracked specimen under three point bending loading (see Fig.…”

Section: Static Mode II Fracture Characterizationmentioning

confidence: 99%

Interlaminar mode II fracture characterization

Moura

2008

Delamination Behaviour of Composites

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Multi-scale modelling of composite material systems Predictive modelling provides the opportunity both to understand better how composites behave in different conditions and to develop materials with enhanced performance for particular industrial applications. This important book focuses on the fundamental understanding of composite materials at the microscopic scale, from designing micro-structural features, to the predictive equations of the functional behaviour of the structure for a specific end-application. Chapters discuss stress and temperature-related behavioural phenomena based on knowledge of physics of microstructure and microstructural change over time. This study covers impact response, damage tolerance and failure of fibrereinforced composite materials and structures. Materials development, analysis and prediction of structural behaviour and cost-effective design all have a bearing on the impact response of composites and this book brings together for the first time the most comprehensive and up-to-date research work from leading international experts. Testing of composite materials can present complex problems but is essential in order to ensure the reliable, safe and cost-effective performance of any engineering structure. Mechanical testing of advanced fibre composites describes a wide range of test methods which can be applied to various types of advanced fibre composites. The book focuses on high modulus, high strength fibre/plastic composites and also covers highly anisotropic materials such as carbon, aramid and glass. Impact behaviour of fibre-reinforced composite materials and structures Mechanical testing of advanced fibre compositesDetails of these and other Woodhead Publishing materials books, as well as materials books from Maney Publishing, can be obtained by:• visiting our web site at www.woodheadpublishing.com • contacting Customer Services (e-mail: sales@woodhead-publishing.com; fax: +44 (0) W O O D H E A D P U B L I S H I N G L I M I T E D Cambridge EnglandWH-Delamination-Pre 6/6/08, 6:33 PM 3 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 Woodhead Publishing Limited; proof copy not for publication This book contains information obtained from authentic and highly regarded sources. Reprinted material is quoted with permission, and sources are indicated. Reasonable efforts have been made to publish reliable data and information, but the author and the publishers cannot assume responsibility for the validity of all materials. Neither the author nor the publishers, nor anyone else associated with this publication, shall be liable for any loss, damage or liability directly or indirectly caused or alleged to be caused by this book. W o o d h e a d P u b l i s h i n g L i m i t e dNeither this book nor any part may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, microfilming and recording, or by any information storage...

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Mode II stress-intensity factors for cracked wood beams

Cited by 155 publications

References 4 publications

Elastic–plastic mode-II fracture of adhesive joints

Elastic–plastic mode-II fracture of adhesive joints

Mixed-mode bending method for delamination testing

Interlaminar mode II fracture characterization

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