A method for measurement of multiple constitutive properties for composite materials |
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| Authors: | Andrew Makeev Yihong He Paige Carpentier Brian Shonkwiler |
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| Affiliation: | 1. Departamento de Diseño y Fabricación, Universidad de Zaragoza, Zaragoza, Spain;2. Departamento de Ingeniería Mecánica, Universidad de Zaragoza, Zaragoza, Spain;3. ICMA, Zaragoza, Spain;1. Advanced Composite Research Center, IAT, Japan Aerospace Exploration Agency (JAXA), 6-13-1, Ohsawa, Mitaka-shi, Tokyo 181-0015, Japan;2. Department of Aeronautics and Astronautics, University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan;3. Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), 3-1-1, Yoshinodai, Sagamihara, Kanagawa 229-8510, Japan;4. Department of Aerospace Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8603, Japan;1. Key Laboratory for Light-weight Materials, Nanjing Tech University, Nanjing 210009, China;2. Department of Engineering Mechanics, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;3. Department of Mechanical Engineering, National University of Singapore, Singapore 117575, Singapore;4. Department of Mechanical Engineering, Clemson University, Clemson, SC 29634, USA;5. Department of Mechanical Engineering, McMaster University, Hamilton, ON L8S4L7, Canada;6. Department of Materials Manufacturing, Ford Motor Company, Dearborn, MI 48124, USA;1. Under graduate student at Study Program ofMechanical Engineering, Engineering Faculty, Udayana University, Jimbaran, Bali, 80361, Indonesia;2. Study Program ofMechanical Engineering, Engineering Faculty, Udayana University, Jimbaran, Bali, 80361, Indonesia;1. Laboratory of Materials Science, Tampere University of Technology, P.O. Box 589, FI-33101 Tampere, Finland;2. Valmet Technologies Oy, P.O. Box 587, FI-40101 Jyväskylä, Finland |
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| Abstract: | Accurate stress–strain constitutive properties are essential for understanding the complex deformation and failure mechanisms for materials with highly anisotropic mechanical properties. Among such materials, glass-fiber- and carbon-fiber-reinforced polymer–matrix composites play a critical role in advanced structural designs. The large number of different methods and specimen types currently required to generate three-dimensional allowables for structural design slows down the material characterization. Also, some of the material constitutive properties are never measured due to the prohibitive cost of the specimens needed. This work shows that simple short-beam shear (SBS) specimens are well-suited for measurement of multiple constitutive properties for composite materials and that can enable a major shift toward accurate material characterization. The material characterization is based on the digital image correlation (DIC) full-field deformation measurement. Two key elements show advantage of using DIC in the SBS tests. First, tensile, compressive, and shear stress–strain relations are measured in a single experiment. Second, a counter-intuitive feasibility of closed-form stress and modulus models, normally applicable to long beams, is demonstrated for short-beam specimens. The modulus and stress–strain data are presented for glass/epoxy and carbon/epoxy material systems. |
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