Formability Experiments for Unidirectional Thermoplastic Composites
| Autor: | Brands, D., Di Genova, L. G., Pierik, E. R., Grouve, W. J.B., Wijskamp, S., Akkerman, R., Vincze, Gabriela, Barlat, Frédéric |
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| Přispěvatelé: | Production Technology |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Achievements and Trends in Material Forming-Peer-reviewed extended papers selected from the 25th International Conference on Material Forming, ESAFORM 2022, 1358-1371 STARTPAGE=1358;ENDPAGE=1371;TITLE=Achievements and Trends in Material Forming-Peer-reviewed extended papers selected from the 25th International Conference on Material Forming, ESAFORM 2022 |
| ISSN: | 1013-9826 |
| Popis: | Reliable composite forming experiments are required to characterize composite formability, to aid material development, and to validate process simulations models. Due to practical reasons, however, typically a limited amount of forming configurations is studied. The objective of this study is, therefore, to develop a methodology for obtaining controlled forming results in a wide range of configurations. Press forming experiments using a dome geometry were used to explore the formability of two commercial unidirectional thermoplastic composite materials. A variety of forming configurations was employed by changing the blank dimensions and layup. The observation of wrinkling defects was simplified by leaving an additional 3 mm tool gap. Blank width and layup had the most influence on the wrinkling severity, followed by blank thickness and length. Quasi-isotropic layups were found to produce wrinkles in nearly all cases, confirming a difficulty in general to form double curved parts. The size and number of wrinkles in these layups were found to change with the stacking sequence. Cross-ply layups showed better formability, but significant wrinkles were still observed depending on the orientation of the blank relative to the layup. The formability experiments using a dome geometry provided a reliable methodology for controlled forming results in many configurations using a generic toolset. Additionally, a comprehensive comparison of formability for two commercial thermoplastic UD materials in a variety of scenarios was provided. |
| Databáze: | OpenAIRE |
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