On the characterisation of transverse tensile properties of molten unidirectional thermoplastic composite tapes for thermoforming simulations
| Autor: | R. Hinterhoelzl, Sylvain Bel, A. Margossian |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
chemistry.chemical_classification
Universal testing machine Thermoplastic Materials science Composite number Mechanical engineering 02 engineering and technology Dynamic mechanical analysis Test method 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Finite element method 0104 chemical sciences chemistry Mechanics of Materials Ultimate tensile strength Ceramics and Composites Composite material 0210 nano-technology Thermoforming |
| Zdroj: | Composites Part A: Applied Science and Manufacturing. 88:48-58 |
| ISSN: | 1359-835X |
| DOI: | 10.1016/j.compositesa.2016.05.019 |
| Popis: | The development of Finite Element (FE) thermoforming simulations of tailored thermoplastic blanks, i.e. blanks composed of unidirectional pre-impregnated tapes, requires the characterisation of the composite tape under the same environmental conditions as forming occurs. This paper presents a novel approach for the characterisation of transverse tensile properties of unidirectional thermoplastic tapes using a Dynamic Mechanical Analysis (DMA) system in a quasi-static manner. The relevance of the presented method is assessed by testing, under the same environmental conditions, a control material with both a universal testing machine and a DMA system. For simulation purposes, a unidirectional thermoplastic tape is characterised under environmental forming conditions using the presented test method. Experimental results, which include stress–strain behaviour and transverse viscosity, are eventually used to identify, via an inverse approach, simulation parameters of a thermo-visco-elastic composite material model (MAT 140, PAM-Form, ESI Group). Comparisons between simulated and experimental results show good agreement. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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