Ma Ke-Ping, Wu Chao-Wei, Tsai Yao-Tung, Hsu Ya-Chun, Chiang Chia-Chin
Department of Mechanical Engineering, National Kaohsiung University of Science and Technology, 415 Chien Kung Road, Kaohsiung 807, Taiwan.
Department of Aeronautical and Mechanical Engineering. Air Force Academy, Academy, No.Sisou 1, Jieshou W. Road, Kaohsiung 820, Taiwan.
Polymers (Basel). 2020 Jul 1;12(7):1479. doi: 10.3390/polym12071479.
Carbon fiber reinforced plastics (CFRP) have many mechanical properties that are superior to those of conventional structural materials and are becoming more and more widely used. Monitoring the curing process used to produce such composite material is important to ensure the quality of the process, especially for the characterization of residual strains after the material has been manufactured. In this study, we present a tilted fiber Bragg grating (TFBG) sensor used to monitor the curing of CFRP composite materials. The TFBG sensor was embedded into the layers of CFRP laminates to study the curing residual strain of the laminates. The experimental results showed that the curing residual stress was about -22.25 MPa, the axial residual strain was -281.351 με, and lateral residual strain of 89.91 με. The TFBG sensor was found to be sensitive to the curing residual strain of the CFRP, meaning that it has potential for use in applications involving composite curing processes. Moreover, it is indeed possible to improve the properties of composite materials via the optimization and monitoring of their curing parameters.
碳纤维增强塑料（CFRP）具有许多优于传统结构材料的机械性能，并且应用越来越广泛。监测用于生产这种复合材料的固化过程对于确保工艺质量很重要，特别是对于材料制造后残余应变的表征。在本研究中，我们展示了一种用于监测CFRP复合材料固化的倾斜光纤布拉格光栅（TFBG）传感器。TFBG传感器被嵌入到CFRP层压板中，以研究层压板的固化残余应变。实验结果表明，固化残余应力约为-22.25MPa，轴向残余应变为-281.351με，横向残余应变为89.91με。发现TFBG传感器对CFRP的固化残余应变敏感，这意味着它在涉及复合材料固化过程的应用中具有潜在用途。此外，通过优化和监测复合材料的固化参数确实有可能改善其性能。
