Journal
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
Volume 107, Issue -, Pages 10-20Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2017.12.017
Keywords
Polymer-matrix composites (PMCs); Process monitoring; Out of autoclave processing; Cure
Funding
- National Natural Science Foundation of China - Postgraduate Research & Practice Innovation Program of Jiangsu Province [51575275, KYCX17_0282]
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Microwave curing technologies have many advantages in manufacturing fiber reinforced polymer composite materials used in aerospace products, compared with traditional autoclave curing technologies. However, the uneven electromagnetic field of microwave in the cavity of the curing chamber results in uneven temperature on the surface of composite laminates during curing, which has been a major obstacle in industrial applications worldwide. Existing methods attempted to solve the problem by the random superposition of uneven electromagnetic fields, but the results were still not satisfactory to meet the high quality requirements of aerospace parts. This paper reveals the one-to-one correspondence between heating patterns of composite parts and microwave curing system settings, and reports a new concept to solve this problem by continuously monitoring and compensating the uneven temperature distribution in real-time. Experimental results from both fiber optical fluorescence sensors and infrared thermal imagers showed significant improvement in temperature uniformity compared with existing methods. (C) 2017 Elsevier Ltd. All rights reserved.
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