Characteristics of resistance welding of lap shear coupons. Part I: Heat transfer

被引：62
作者：
Ageorges, C
Ye, L [1 ]
Mai, YW
Hou, M
机构：
[1] Univ Sydney, Dept Mech & Mechatron Engn, Ctr Adv Mat Technol, Sydney, NSW 2006, Australia
[2] Cooperat Res Ctr Aerosp Struct Ltd, Bankstown, NSW 2200, Australia
来源：
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 1998年 / 29卷 / 08期
基金：
澳大利亚研究理事会;
关键词：
resistance welding; heat transfer; thermal analysis; thermoplastic matrix composites; PEEK;
D O I：
10.1016/S1359-835X(98)00022-0
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A transient three-dimensional finite element model for resistance welding of thermoplastic matrix composite lap shear specimens was established. The basic model assumes orthotropic heat conduction in the composite parts and accounts for heat losses by radiation as well as natural convection, involving latent heat effects. The rough contact surface between the heating ply and composite adherends was simulated by means of a thermal gap-conductance concept. Heat generation through the bundles of fibres in the heating ply was modelled. Different welding configurations of lap shear specimens were evaluated, namely APC-2 laminate/PEEK film, APC-2 laminate/PEI film and CF-PEI laminate/PEI film. 'Time to melt' and 'time to cause thermal degradation' were predicted and compared with experimental data available in the Literature, and close agreement was obtained. Localised thermal degradation at the bonding interface was identified for high input power levels, ana heat how to the bulk laminate for long processing times was exhibited. (C) 1998 Elsevier Science Ltd. All rights reserved.
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收藏
页码：899 / 909
页数：11
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