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首页> 美国卫生研究院文献>Polymers >Internal Residual Strain Measurements in Carbon Fiber-Reinforced Polymer Laminates Curing Process Using Embedded Tilted Fiber Bragg Grating Sensor
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Internal Residual Strain Measurements in Carbon Fiber-Reinforced Polymer Laminates Curing Process Using Embedded Tilted Fiber Bragg Grating Sensor

机译：使用嵌入式倾斜光纤布拉格光栅传感器的碳纤维增强聚合物层压板固化工艺内部残余应变测量

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摘要

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.
机译：碳纤维增强塑料（CFRP）具有许多优于常规结构材料的机械性能，并且变得越来越广泛地使用。监测用于生产这种复合材料的固化过程对于确保该方法的质量是重要的，特别是在制造材料之后的残留菌株的表征。在这项研究中，我们介绍了一种用于监测CFRP复合材料的固化的倾斜光纤布拉格光栅（TFBG）传感器。将TFBG传感器嵌入CFRP层压板层中以研究层压板的固化残余菌株。实验结果表明，固化残余应力约为-22.25MPa，轴向残余菌株为-281.351μL，横向残余应变为89.91μL。发现TFBG传感器对CFRP的固化残留菌株敏感，这意味着它具有用于涉及复合固化过程的应用的可能性。此外，确实可以通过优化和监测它们的固化参数来改善复合材料的性质。

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