Critical review on the assessment of fatigue and fracture in composite materials and structures |
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| Affiliation: | 1. Department of Reconstructive Sciences and Center for Biomaterials, University of Connecticut Health Center, Farmington, USA;2. Department of Biomaterials and Oral Biology, School of Dentistry, University of São Paulo, Brazil;3. Division of Fixed Prosthodontics and Biomaterials, University Clinic of Dental Medicine, University of Geneva, Geneva, Switzerland;4. Post-Graduate Program in Dentistry, Dental School, University of Passo Fundo, Campus I, BR 285, 99052-900 Passo Fundo, RS, Brazil;5. School of Clinical Dentistry, University of Sheffield, Sheffield, UK;6. Research and Development Department VITA Zahnfabrik, Bad Saeckingen, Germany;7. Department of Medical Biotechnologies, University of Siena, Siena, Italy;8. Research Laboratory for Dental Biomaterials, Dental Clinic 1, University of Erlangen-Nuernberg, Erlangen, Germany;1. Centre of Expertise for Structural Mechanics, Department of Mechanical and Aerospace Engineering, Monash University, Clayton, Victoria 3800, Australia;2. Department of Mechanical Engineering, Imperial College London, Exhibition Road, London SW7 2AZ, UK;3. Computational Multiphysics Systems Laboratory, Code 6394, Center for Materials Physics and Technology, US Naval Research Laboratory, Washington, DC 20375, United States;4. Empa, Swiss Federal Laboratories for Materials Science and Technology, CH-8600 Dübendorf, Switzerland;5. Structures Division, Naval Air Systems Command, Patuxent River, MD 20670, United States;1. Sir Lawrence Wackett Aerospace Research Centre, School of Aerospace, Mechanical and Manufacturing Engineering, RMIT University, GPO Box 2476, Melbourne, Victoria 3001, Australia;2. CRC-ACS, 1/320 Lorimer Street, Port Melbourne, Victoria 3207, Australia;3. ACS Australia, 1/320 Lorimer Street, Port Melbourne, Victoria 3207, Australia;1. School of Aeronautics, Northwestern Polytechnical University, Xi’an, PR China;2. Structural Integrity & Composites Group, Faculty of Aerospace Engineering, Delft University of Technology, Netherlands |
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| Abstract: | This paper provides a critical review of common approaches to assess fatigue and fracture in composite materials and structures. It explains how fatigue in composite materials and structures should be understood based on the observed fatigue phenomena and mechanisms. In relation to these phenomena, the selection of proper similitude conditions for predictions is discussed and it is explained how mechanistic models can be developed that describe fatigue damage growth in its sequence from first initiation to final failure. An explanation is given for the fact that these mechanistic damage growth approaches have not yet led to suitable prediction models. In addition, this paper illustrates that in-depth understanding of individual damage mechanics may pave the road towards further material optimization with respect to fatigue and durability. |
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| Keywords: | Composites Fatigue Fracture mechanics Similitude |
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