Investigating the static response of hybrid fibre–metal laminate doublers loaded in tension |
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| Authors: | Sugiman Sugiman AD Crocombe KB Katnam |
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| Affiliation: | 1. Division of Mechanical, Medical and Aerospace Engineering, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, Surrey GU2 7XH, UK;2. Composite Research Centre, Kathleen Lonsdale Building, University of Limerick, Limerick City, Ireland;1. North West Composites Centre, School of Materials, University of Manchester, Manchester M13 9PL, UK;2. Beijing Institute of Aeronautical Materials, Beijing, China;1. Department of Mechanical and Aerospace Engineering, Monash University, Clayton, Victoria 3800, Australia;2. Aerospace Division, Defence Science and Technology Group, 506 Lorimer Street, Fishermans Bend, Victoria 3207, Australia;1. School of Materials, University of Manchester, Manchester M13 9PL, UK;2. Royal Holloway, University of London, Surrey TW20 0EX, UK;1. Department of Chemical Engineering Materials Environment, Sapienza-Università di Roma and UdR INSTM, Via Eudossiana 18, 00184 Roma, Italy;2. Institute for Polymers, Composites and Biomaterials, National Research of Council, Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy;3. Institut PPRIME, CNRS-ENSMA-Université de Poitiers, Département Physique et Mécanique des Matériaux, ENSMA, 1, Av. Clément Ader, B.P. 40109, Futuroscope Cedex 86961, France;4. ITW Test and Measurement Italy, Via Airauda 12, 10044 Pianezza (TO), Italy |
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| Abstract: | Experimental and numerical studies have been undertaken on hybrid fibre–metal (aluminium–Glare) laminate (FML) doubler joints to investigate their static response under tension loading. The specimens either have the fibres parallel to the loading direction (spanwise) or perpendicular to the loading direction (chordwise). Inevitably sheets in these laminates butt together and these butts can affect the joint strength. The effect of the butt position was investigated. The spanwise specimen was found to have the highest strength followed by chordwise specimens without butts and finally chordwise specimens with butts. The most critical position for a butt was found to be adjacent to the doubler end. The ultimate strength for spanwise and chordwise specimens without butts was controlled by the failure in the Glare layer, however, for specimens with butts, the butts control the ultimate strength. A progressive damage numerical analysis was undertaken using cohesive zone elements to model failure in the Glare and in the adhesive layers. This modelling was found to be in good agreement with the experiment data both in terms of the strength and the failure mechanisms. |
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