Simulation and on-line monitoring using optical fiber Bragg grating sensors of temperature history during laser-assisted automated fiber placement

IF 2.3 3区 材料科学 Q3 MATERIALS SCIENCE, COMPOSITES
Dacheng Zhao, Weiping Liu, Jiping Chen, Songhao Zhu, Yang Yang, Guangquan Yue
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引用次数: 0

Abstract

Automated fiber placement (AFP) in situ consolidation (ISC) of thermoplastic composite possess the potential to reduce manufacturing costs and improve manufacturing efficiency. The properties of composite manufactured by the ISC are affected by several mechanisms including polymer degradation, crystallization, intimate contact, polymer healing and void dynamics. All these mechanisms are directly affected by the temperature history. Consequently, the control and accurate measurement of temperature history during ISC are particularly important for improving the properties of composite. In this study, a simplified three-dimensional transient heat transfer model was established. The effect of tool temperature and placement speed on the temperature history and peak temperature were predicted. Simultaneously, an online temperature monitoring system was built and the optical Fiber Bragg Grating sensors (FBGS) was used to measure the temperature history. The results indicated that the predicted results of the model were consistent with the measured results, the error was below 8%. In addition, the temperature history of layers was significantly affected by the tool temperature and placement speed. The temperature of the layers decreased to near the tool temperature after cooling, and a higher tool temperature increasing its peak temperature because of the reduce of the cooling rate. On the contrary, an increase in placement speed will reduce the peak temperature of the layers.
使用光纤布拉格光栅传感器模拟和在线监测激光辅助自动光纤铺放过程中的温度变化历史
热塑性复合材料的自动纤维铺放(AFP)原位固结(ISC)具有降低制造成本和提高制造效率的潜力。通过 ISC 制造的复合材料的性能受多种机制的影响,包括聚合物降解、结晶、亲密接触、聚合物愈合和空隙动力学。所有这些机制都直接受到温度历史的影响。因此,控制和精确测量 ISC 过程中的温度变化对改善复合材料的性能尤为重要。本研究建立了一个简化的三维瞬态传热模型。预测了工具温度和贴片速度对温度历史和峰值温度的影响。同时,建立了在线温度监测系统,并使用光纤布拉格光栅传感器(FBGS)测量温度历史。结果表明,模型的预测结果与测量结果一致,误差低于 8%。此外,层的温度历史受工具温度和贴片速度的影响很大。层的温度在冷却后下降到接近工具温度,工具温度越高,峰值温度越高,因为冷却速度降低了。相反,贴装速度的增加会降低层的峰值温度。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of Composite Materials
Journal of Composite Materials 工程技术-材料科学:复合
CiteScore
5.40
自引率
6.90%
发文量
274
审稿时长
6.8 months
期刊介绍: Consistently ranked in the top 10 of the Thomson Scientific JCR, the Journal of Composite Materials publishes peer reviewed, original research papers from internationally renowned composite materials specialists from industry, universities and research organizations, featuring new advances in materials, processing, design, analysis, testing, performance and applications. This journal is a member of the Committee on Publication Ethics (COPE).
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