Integrated Analytical and Finite Element-Based Modelling, Manufacturing, and Characterisation of Vacuum-Infused Thermoplastic Composite Laminates Cured at Room Temperature

被引:4
作者
Beber, Vinicius Carrillo [1 ]
Fernandes, Pedro Henrique Evangelista [1 ]
Nagel, Christof [1 ]
Arnaut, Katharina [1 ]
机构
[1] Fraunhofer Inst Mfg Technol & Adv Mat IFAM, Dept Polymer Mat & Mech Engn, Wiener Str 12, D-28359 Bremen, Germany
关键词
thermoplastic composites; Elium (c); composite lay-up; elastic constants; FEA; laminate theory; recycling; RESIN INFUSION; FIBER; WASTE;
D O I
10.3390/jcs8120545
中图分类号
TB33 [复合材料];
学科分类号
摘要
Due to their improved recyclability, thermoplastic composites (TPCs) are increasing their application across industries. The current work deals with the dimensioning, manufacturing, and characterisation of vacuum-infused TPCs cured at RT and made of non-crimp glass fabric and the liquid acrylic-based resin Elium (c). Laminates with 10 and 12 layers achieved a fibre weight content of 73% measured by the burn-off process, which corresponds to a fibre volume content of 55%. Three-point bending tests revealed a bending strength of 636.17 +/- 25.70 MPa and a bending modulus of 24,600 +/- 400 MPa for the 12 layer laminate. Using micro-mechanical models, unidirectional elastic constants are calculated and applied in classical laminate theory (CLT) for optimising composite lay-ups by maximising bending stiffness, whilst yielding a laminate thickness prediction error of -0.18% and a bending modulus prediction error of -1.99%. Additionally, FEA simulations predicted the bending modulus with a -4.47% error and illustrated, with the aid of the Tsai-Hill criterion, the relationship between the onset of layer failure and discrepancies between experimental results and simulations. This investigation demonstrates the effective application of analytical and numerical methods in the dimensioning and performance prediction of TPCs.
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页数:14
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