Print Email Facebook Twitter Fibre-bridged fatigue delamination in multidirectional composite laminates Title Fibre-bridged fatigue delamination in multidirectional composite laminates Author Yao, Liaojun (Harbin Institute of Technology) Cui, Hao (Cranfield University) Sun, Yi (Harbin Institute of Technology) Guo, Licheng (Harbin Institute of Technology) Chen, Xiangming (Aircraft Strength Research Institute) Zhao, Meiying (Northwestern Polytechnical University) Alderliesten, R.C. (TU Delft Structural Integrity & Composites) Date 2018-12-01 Abstract The influence of fibre bridging on delamination failure in multidirectional composite laminates with different thickness scales is characterized, and the dependence of fibre bridging significance on laminate thickness as well as loading regime is investigated in this paper. Both quasi-static and fatigue resistance curves (R-curve) are experimentally determined to quantify the significance of fibre bridging in delamination growth. The results clearly demonstrate that thickness has effect on the amount of fibre bridging in quasi-static delamination. And the significance of fibre bridging decreases with the increase in laminate thickness. However, the situation for fatigue delamination growth (FDG) is much more complicated. The difference in fibre bridging generation seems to be insignificant in short fatigue cracks and at the plateau state, whereas more bridging fibres can be present in a thinner laminate in-between state. Loading regimes also have significant effect on the amount of fibre bridging. The results clearly demonstrate that more bridging fibres can be generated in quasi-static delamination compared to fatigue. A modified Paris relation proposed by the authors in previous studies is employed in present study to determine fibre-bridged FDG behaviors in multidirectional composite laminates with various thickness scales. All fatigue data locate in a relatively narrow band region of the resistance graph, resulting in a master resistance curve in determining fatigue delamination behaviors. This clearly demonstrates that neither thickness nor fibre bridging has significant effect on fatigue delamination behaviors, if the similarity is well represented. Subject A. Polymer-matrix composites (PMCs)B. DelaminationB. FatigueMultidirectional To reference this document use: http://resolver.tudelft.nl/uuid:c79ea245-ea8f-4fad-a242-0e0db3b17a35 DOI https://doi.org/10.1016/j.compositesa.2018.09.027 Embargo date 2019-04-01 ISSN 1359-835X Source Composites Part A: Applied Science and Manufacturing, 115, 175-186 Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2018 Liaojun Yao, Hao Cui, Yi Sun, Licheng Guo, Xiangming Chen, Meiying Zhao, R.C. Alderliesten Files PDF 1_s2.0_S1359835X18303853_main.pdf 6.03 MB Close viewer /islandora/object/uuid%3Ac79ea245-ea8f-4fad-a242-0e0db3b17a35/datastream/OBJ/view