Progressive damage assessment of centrally notched composite specimens in fatigue |
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| Affiliation: | 1. Department of Biomedical Engineering and Mechanics, Virginia Tech, Blacksburg 24061, VA, United States;2. Department of Aerospace and Ocean Engineering, Virginia Tech, Blacksburg 24061, VA, United States;1. Department of Aerospace Engineering, University of Michigan, Ann Arbor, MI 48109-2140, United States;2. Department of Aeronautics and Astronautics, Guggenheim Hall, 211E, University of Washington, Seattle, WA 98195-2400, United States;1. Université de Toulouse, INSA, UPS, Mines Albi, ISAE, ICA (Institut Clément Ader), ISAE, 10 Avenue Edouard Belin, F-31055 Toulouse, France;2. Université de Toulouse, INSA, UPS, Mines Albi, ISAE, ICA (Institut Clément Ader), INSA, 135 Avenue de Rangueil, 31077 Toulouse, France;3. Université de Toulouse, INSA, UPS, Mines Albi, ISAE, ICA (Institut Clément Ader), AIRBUS France, 316 Route de Bayonne, 31000 Toulouse, France;1. Politecnico di Milano, Department of Mechanical Engineering, via La Masa 1, 20156 Milano, Italy;2. Cardiff School of Engineering, Cardiff University, Queen''s Building, The Parade, Cardiff CF24 3AA, Wales, UK;1. School of Mechanical Engineering, Jiangsu University, Zhenjiang, China;2. Department of Mechanical Engineering, The University of Sheffield, Sheffield, United Kingdom;3. Institute for Research and Development, Duy Tan University, Da Nang City, Viet Nam;4. Department of Civil and Environmental Engineering, Tokyo Institute of Technology, Tokyo, Japan;1. Department of Mechanical, Materials and Manufacturing Engineering, University of Nottingham (Malaysia Campus), 43500 Semenyih, Malaysia;2. School of Engineering, Energy and Infrastructure, Western Institute of Technology at Taranaki, New Zealand |
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| Abstract: | The aim of this study is to assess the residual properties and the corresponding damage states within centrally notched quasi-isotropic 0/−45/+45/90]S T650/F584 (Hexcel) carbon-fiber/epoxy composites subjected to fatigue loading using Digital Image Correlation (DIC), radiography, and a non-contact vibration measurement technique. Quasi-static tests were performed on virgin samples using DIC to determine the full-field in-plane strains at different applied load levels. Fatigue tests were interrupted during the fatigue lifetimes in order to perform quasi-static tests with DIC measurements. Non-contact vibration measurements were performed to investigate the effect of fatigue damage on residual frequency responses. X-ray computed tomography was used to determine the type, location, and extent of fatigue damage development. The results provide an important step in the validation of DIC and vibration response as a powerful combined non-destructive evaluation tool for monitoring the development of fatigue damage as well as predicting the damage level of notched composite materials. |
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| Keywords: | A Carbon fiber B Fatigue D Non-destructive testing D Radiography |
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