Modeling of Heat Conduction in Thermoplastic Honeycomb Core/Face Sheet Fusion Bonding
Honeycomb sandwich materials have been widely used in aerospace industry as secondary structural materials or interior pan-els. Recently the research of full thermoplastic honeycomb sandwich materials has been of interest due to their recyclability. In their production, they usually demand an adhesive-free process, namely fusion bonding, to connect thermoplastic honeycomb core and face sheets. It is a heat induced process where a parameter of temperature should be well controlled to guarantee the product quality. This article presents a mathematical model of heat conduction to analyze the transient temperature distribution from heating tools towards inner part of the core under fusion bonding conditions. In order to simplify the complexity of 3D honeycomb geometry, a homogenization method is used to obtain average thermal properties of the honeycomb along the major heat flux direction. The model is validated by comparing with the results of in-situ temperature measurement during fusion bonding. The presented model can also be applied to analyzing general out-of-plane heat conduction through honeycomb sandwich structures made from other materials.
作 者： Fan Xinyu Li Yubin Li Juan Yan Chun Li Ke 作者单位： Fan Xinyu,Li Juan,Yan Chun(Key Lab of Polymer Materials, Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China)Li Yubin(School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China)
Li Ke(Xi' an Long Technology & Development Co., Ltd, Xi' an 710075, China)
刊 名： 中国航空学报（英文版） ISTIC 英文刊名： CHINESE JOURNAL OF AERONAUTICS 年，卷(期)： 2009 22(6) 分类号： V2 关键词： honeycomb structures heat conduction homogenization method welding