Infrared stress measurements of thermal damage to laser-processed carbon fiber reinforced plastics |
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| Affiliation: | 1. Advanced Manufacturing Research Institute, National Institute of Advanced Industrial Science and Technology, 1-2-1 Namiki, Tsukuba-shi, Ibaraki 305-8564, Japan;2. Research Institute for Innovation in Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology, 1-1-1 Higashi, Tsukuba-shi, Ibaraki 305-8565, Japan;3. Advanced Laser and Process Technology Research Association (ALPROT), 1-17-1 Tranomon 5, Minato-ku, Tokyo 105-0001, Japan;1. Laboratoire de Génie Industriel et Production Mécanique, Ecole Nationale des Sciences Appliquée d’Oujda , Université Mohamed Premier, B.P. 524, Oujda 60000, Morocco;2. Laboratoire de Dynamique et d’Optique des Matériaux, Faculté des Sciences d’Oujda, Université Mohammed Premier Oujda 60000, Morocco;3. Laboratoire Ingénierie management Industriel et innovation, FST Settat Université Hassan 1er;1. Department of Electrical Engineering, Incheon National University, Incheon 406772, Republic of Korea;2. Applied Device and Material Lab., Device Technology Division, Korea Advanced Nanofab Center (KANC), Suwon 443270, Republic of Korea;1. School of Materials Science and Engineering, Beihang University, Beijing 100191, China;2. Beijing Aerospace Unmanned Vehicles System Engineering Research Institute, Beijing 100094, China |
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| Abstract: | Recently, the laser processing of carbon fiber reinforced plastics (CFRPs) has attracted attention owing to the high processing speed and less tool wear. A problem in the laser processing of CFRPs is the lower strength than that of CFRPs processed by machines. This is considered to be due to the heat-affected zone (HAZ) generated during laser processing. In this study, the stress distributions of CFRPs processed by a laser obtained was evaluated by using infrared thermography. X-ray CT images were also obtained, which enabled us to discuss the stress distribution in terms of the HAZ. The stress distribution showed that the area with reduced stress generated in the HAZ which was introduced by laser processing. The region of low stress in the HAZ was visualized by infrared thermography. It is shown that the regions with reduced stress induce the conventionally reported decrease in strength of laser-processed CFRPs. |
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| Keywords: | A. Polymer–matrix composites (PMCs) D. Non-destructive testing E. Cutting E. Machining |
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