Novel methods to characterise forming mechanics
Determining the constitutive parameters for the forming of advanced thermoplastic composites and engineering fabrics requires specialised test methods. The optimum way to conduct these tests is an active area of research and continues to evolve. Ideally one would like to gather as much information on shear and bending behaviour as possible [1], as quickly as possible [2] and with as little error as possible [3,4]. Sometimes, new test methods are required [5].​ Extracting useful information from the tests can involve theoretical and numerical analysis [6].
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[1] Harrison, P. , Alvarez, M. F. and Anderson, D. (2018) Towards comprehensive characterisation and modelling of the forming and wrinkling mechanics of engineering fabrics. International Journal of Solids and Structures, 154, pp. 2-18. (doi: 10.1016/j.ijsolstr.2016.11.008)
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[2] Harrison, P. , Fernandez Alvarez, M., Correia, N., Mimoso, P., Cristovao, C. and Gomes, R.(2018) Characterising the forming mechanics of pre-consolidated nylon-carbon composite.In: ECCM 18: 18th European Conference on Composite Materials, Athens, Greece, 24-28 June 2018
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[3] Harrison, P. , Taylor, E. and Alsayednoor, J. (2018) Improving the accuracy of the uniaxial bias extension test on engineering fabrics using a simple wrinkle mitigation technique.Composites Part A: Applied Science and Manufacturing, 108, pp. 53-61. (doi: 10.1016/j.compositesa.2018.02.025)
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[4] Alsayednoor, J., Lennard, F. , Yu, W.R. and Harrison, P. (2017) Influence of specimen pre-shear and wrinkling on the accuracy of uniaxial bias extension test results. Composites Part A: Applied Science and Manufacturing, 101, pp. 81-97. (doi: 10.1016/j.compositesa.2017.06.006)
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[5] Harrison, P. , Abdiwi, F., Guo, Z., Potluri, P. and Yu, W.R. (2012) Characterising the shear–tension coupling and wrinkling behaviour of woven engineering fabrics. Composites Part A: Applied Science and Manufacturing, 43(6), pp. 903-914. (doi: 10.1016/j.compositesa.2012.01.024)
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[6] Harrison, P. (2012) Normalisation of biaxial bias extension test results considering shear tension coupling. Composites Part A: Applied Science and Manufacturing, 43(9), pp. 1546-1554.(doi: 10.1016/j.compositesa.2012.04.014)
