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Static test of a variable stiffness thermoplastic composite wingbox under shear, bending and torsionZucco, G. (author), Oliveri, V. (author), Rouhi, M. (author), Telford, R. (author), Clancy, G. (author), McHale, C. (author), O'Higgins, R. (author), Young, T. M. (author), Weaver, P. M. (author), Peeters, D.M.J. (author)Automated manufacturing of thermoplastic composites has found increased interest in aerospace applications over the past three decades because of its great potential in low-cost, high rate, repeatable production of high performance composite structures. Experimental validation is a key element in the development of structures made using this...journal article 2020
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Peeters, D.M.J. (author), Irisarri, François Xavier (author), Groenendijk, Chris (author), Růžek, Roman (author)Composite materials are finding increasing application, for example in commercial aircraft. Traditionally fiber angles are restricted to 0°,±45° and 90°. The current work exploits the possibility of using multiple ’non-conventional’ laminates where either fiber steering (‘variable stiffness’), ply drops (‘variable thickness’), or a...journal article 2019
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Peeters, D.M.J. (author), Lozano, Gustavo Gonzalez (author), Abdalla, M.M. (author)A method to optimise the fibre angle distribution of variable stiffness laminates is proposed. The proposed method integrates a fibre angle retrieval step with a fibre angle optimisation procedure. A multi-level approximation approach is used in combination with the method of successive approximations. First, fibre angle retrieval is done by...journal article 2018
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Peeters, D.M.J. (author), Hong, Z. (author), Abdalla, M.M. (author)A way to approximate the compliance of composites for optimisation is described. A two-level approximation scheme is proposed inspired by traditional approximation concepts such as force approximations and convex linearisation. In level one, an approximation in terms of the reciprocal in-plane stiffness matrix is made. In level two, either...journal article 2018
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Peeters, D.M.J. (author), Irisarri, F.X. (author), Abdalla, M.M. (author)Modern composite structures o<br/>er two avenues of optimising performance. One, optimising a single stacking sequence over the structure leading to constant sti<br/>ness designs. Two, varying the sti<br/>ness over the structure. This may be achieved by dropping plies, changing the thickness, or by steering the fibres, changing the fibre angles....conference paper 2016