Polymer Testing | |
Quasi static mechanical study of vacuum bag infused bouligand inspired composites | |
A. Santos1  L. Amorim2  G. Dias3  J.C. Viana3  J.P. Nunes3  | |
[1] IPC – Institute for Polymers and Composites, University of Minho, Guimarães, Portugal;Corresponding author..;IPC – Institute for Polymers and Composites, University of Minho, Guimarães, Portugal; | |
关键词: Carbon fibre; Bouligand architecture; Vacuum bag infusion; Quasi-static testing; FE modelling; Failure mode; | |
DOI : | |
来源: DOAJ |
【 摘 要 】
Three novel Bouligand inspired composites were produced by vacuum bag infusion manufacturing process and their quasi-static mechanical performance were compared to a conventional aircraft laminate. A morphologic/physical study was first conducted for all configurations and their mechanical response under tensile, three-point bending (3-PB) and interlaminar shear strength (ILSS) tests were then evaluated and discussed. No significant number of voids were detected into laminates, however, a rough and poor defined interlaminar region was observed in both Bouligand-like configurations. Under quasi-static mechanical solicitations, and when compared to reference layup, bioinspired configurations have shown similar and 18% higher tensile and flexural modulus. However, the progressive and translaminar failure mode, typically observed in these configurations, led to a lower load bearing capability. Despite presented similar interlaminar resistance than reference, finite element models built have revealed a good correlation between cross-section stress field and failure mode observed experimentally.
【 授权许可】
Unknown