Influence and optimization of parameters of prepreg viscosity during placement  

作　　者：Lei ZU Xianzhao XIA Qian ZHANG Xiaolong JIA Huabi WANG Guiming ZHANG Jinhu LU 

机构地区：[1]Anhui Province Key Laboratory of Aerospace Structural Parts Forming Technology and Equipment,Hefei University of Technology,Hefei 230009,China [2]Key Laboratory of Carbon Fiber and Functional Polymers,Ministry of Education,Beijing University of Chemical Technology,Beijing 100029,China [3]State Key Laboratory of Organic-Inorganic Composites,College of Materials Science and Engineering,Beijing University of Chemical Technology,Beijing 100029,China

出　　处：《Chinese Journal of Aeronautics》2022年第4期438-449,共12页中国航空学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.51875159);the Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory,China(No.XHT 2020-002);Fok Ying Tung Education Foundation,China(No.171046);the Key Research and Development Program of Anhui Province,China(No.201904d07020013);the Fundamental Research Funds for the Central Universities,China(Nos.PA2020GDJQ0029 and PA2020GDSK0075);the National Key Research and Development Project,China(No.2019YFB1504800);the Beijing Natural Science Foundation,China(No.2192044);2020 and 2021 Open Project of State Key Laboratory of Organic-Inorganic Composites,China(Nos.Oic-202001008 and Oic-202101008)。

摘　　要：This paper tested the viscosity of prepreg in the automatic placement process, and conducted the probe and placement-90° peel tests through the test systems. The law of variation of prepreg viscosity during the laying process was studied through these tests under different conditions by taking the peel force to intuitively and quantitatively characterise the viscosity of the prepreg.The results show that this viscosity is inversely proportional to the laying rate, proportional to the laying pressure, and quadratic to the laying temperature. Then, peel tests were simulated to validate both the correctness of the peel test and that of the probe test data fitting the two-line cohesion model. On this basis, a response surface test for laying and peeling was designed. Taking viscous peel force as the response target, the laying process parameters were optimised and the significance of their influence was further studied. The error between the test value and the predicted value of the maximum viscous peel force is 3.03%.

关 键 词：Automatic placement Cohesion model Optimization Peel test Probe test Significance of influence VISCOSITY 

分 类 号：V261[航空宇航科学与技术—航空宇航制造工程]