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Evaluation of Ressistance to Repeated Low-Velocity Impact of Composite Laminates with Polyurethane Coating |
YUE Hailiang1, ZHANG Guoli1,**( ), WANG Zhuangzhi2, GUO Ruiyan1 |
1. Key Laboratory of Advanced Textile Composites, Tianjin and Ministry of Education, Tianjin Polytechnic University, Tianjin, 300387, China 2. Weihai Guangwei Composites Material Co., Ltd, Weihai, 264200, China |
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Cite this article:
YUE Hailiang, ZHANG Guoli, WANG Zhuangzhi, GUO Ruiyan. Evaluation of Ressistance to Repeated Low-Velocity Impact of Composite Laminates with Polyurethane Coating. Chinese Journal of Materials Research, 2016, 30(5): 379-387.
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Abstract The resistance to repeated low-velocity impact of PU coated composite laminates of different thickness was evaluated. The composite laminates were fabricated by compression molding method, and then were sand-blasted in order to increase their surface roughness, and finally were coated with PU of the same thickness. The composite laminates with and without PU coating were impacted repeatedly using a pressure-assisted Instron-Dynatup 9250 instrumented drop-weight impact tester until all the specimens were perforated, and then ultrasonic C-scan was used to detect the delimitation area after testing. It is observed that the influence of PU on the resistance to repeated impact of composite laminates is gradually decreasing after repeated impacting with the increasing of impacted energy, so the damage area of specimens are increasing after repeated impact. In addition, with the increasing thickness of composite laminates, the influence of PU acting on the resistance to repeated impact for all laminates is enhanced so that the damage area of specimens is gradually decreasing.
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Received: 12 October 2015
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Fund: *Supported by the Planned Science and Technology Project of Tianjin No.13TXSYJC40500 and Tianjin City High School Science & Technology Fund Planning Project No.2012ZD02 |
About author: **To whom correspondence should be addressed, Tel: (022)83955899, E-mail: guolizhang@tjpu.edu.cn |
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