The double cantilever beam test applied to mode I fracture characterization of cortical bone tissue |
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| Authors: | J.J.L. Morais M.F.S.F. de Moura F.A.M. Pereira J. Xavier N. Dourado M.I.R. Dias J.M.T. Azevedo |
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| Affiliation: | 1. CITAB/UTAD, Departamento de Engenharias, Quinta de Prados, 5001-801, Vila Real, Portugal;2. Faculdade de Engenharia da Universidade do Porto, Departamento de Engenharia Mecânica e Gestão Industrial, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal;3. UTAD, Departamento de Ciências Veterinárias, Quinta de Prados, 5001-801, Vila Real, Portugal;4. CECAV/UTAD, Departamento de Zootecnia, Quinta de Prados, 5001-801, Vila Real, Portugal;1. INEGI—Instituto de Engenharia Mecânica e Gestão Industrial, Rua Dr. Roberto Frias, 400, 4200-465 Porto, Portugal;2. Universidade de Trás-os-Montes e Alto Douro, UTAD, CITAB, Departamento de Engenharias, Quinta de Prados, 5000-801 Vila Real, Portugal;3. Faculdade de Engenharia da Universidade do Porto, Departamento de Engenharia Mecânica, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal;1. Faculdade de Engenharia da Universidade do Porto, Departamento de Engenharia Mecânica, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal;2. CITAB/UTAD, Departamento de Engenharias, Quinta de Prados, 5001-801 Vila Real, Portugal;1. Fatigue and Fracture Lab., Centre of Excellence in Experimental Solid Mechanic and Dynamics, School of Mechanical Engineering, Iran University of Science and Technology, Narmak, 16846, Tehran, Iran;2. Department of Mechanical Engineering, Faculty of Engineering, University of Porto, Portugal;1. INEGI, Rua Dr Roberto Frias 400, 4200-465 Porto, Portugal;2. FEUP, Rua Dr Roberto Frias s/n, 4200-465 Porto, Portugal;3. Honda R&D Co., Ltd., Automobile R&D Center, 4630 Shimotakanezawa, Haga-machi, Haga-gun, Tochigi, Japan;1. Macromolecules and Interfaces Institute, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, United States;2. Department of Biomedical Engineering and Mechanics, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, United States;3. Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, United States |
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| Abstract: | The primary objective of this work was to analyse the adequacy of the Double Cantilever Beam (DCB) test in determining fracture toughness under pure mode I loading of cortical bone tissue. A new data reduction scheme based on specimen compliance and the crack equivalent concept was used to overcome the difficulties inherent in crack monitoring during its growth. It provides a complete resistance curve, which is fundamental in estimating the fracture energy. A cohesive zone model was used to simulate damage initiation and propagation, thus assessing the efficacy of the proposed testing method and data reduction scheme. Subsequently, the DCB test was applied to evaluate the mode I fracture energy of hydrated and thermally dehydrated cortical bone tissue from young bovine femur, in the tangential–longitudinal propagation system. The results obtained demonstrate the efficacy of the DCB test and the proposed data reduction scheme on the bone fracture characterization under mode I loading. |
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