Comeld^TM Joints: A Novel Technique for Bonding Composites and Metal

查看全文 作　　者：Tu [1]W;Guild F [2]J;Hogg P [3]J

机构地区：[1]Queen Mary, University of London;[2]Imperial College London, South Kensington Campus;[3]University of Manchester, PO Box 88

出　　处：《稀有金属材料与工程》索引2009年第38卷第A03期,共8页

基　　金：Supported by TWI, UK We gratefully acknowledge the financial support and the provision of specimens . 摘　　要：Current and future structural applications for composite laminates frequently involve design solutions combining composite laminates and metal; the materials must be joined. Two conventional means of joining are available mechanical joining and adhesive bonding. Both methods have critical disadvantages. A novel surface treatment for metals developed at TWI, Surfi-Sculpt, leads to the formation of surface protrusions on metal surfaces. These protrusions are typically 1.0 mm high and 0.6 mm in diameter. The surface modified metal can be bonded with composite laminates to form a Comeld~TM joint. These joints can be described as a combination of mechanical fastening and adhesive bonding. This paper describes our current work using finite element modelling to optimize the protrusions in respect to their geometry and distribution. The simulations require multi-scale modelling techniques to transfer results between the global model of the whole joint and the unit cell models containing a protrusion. Results from the simulations show critical effects on stress distributions arising from changing protrusion geometry. These joints show significant advantages over conventional adhesive joining technologies and their application would allow improved performance for combinations of metal and composite laminates. 关键词：复合材料金属表面处理技术物理性能

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Comeld^TM Joints: A Novel Technique for Bonding Composites and Metal

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