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An experimental investigation on the low‐velocity impact behavior of 3D five‐directional braided composites
Author(s) -
Yan Shi,
Zhao Jinyang,
Lu Xiamei,
Zeng Tao
Publication year - 2014
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.3360
Subject(s) - materials science , composite material , deflection (physics) , epoxy , impact energy , impact resistance , composite number , volume fraction , structural engineering , optics , engineering , physics
This paper presents an experimental study on the low‐velocity impact performance of 3D carbon/epoxy braided composite panels with different braiding parameters, which have the similar fiber volume fraction but different braiding angles (15°, 25°, and 35°). The low‐velocity impact tests were conducted at three different energy levels of 15, 30, and 45 J. Impact response of the panels was recorded and analyzed in terms of peak load, absorbed energy, time, and deflection at peak load. The images of damage samples taken from impacted sides and non‐impacted sides were evaluated for the damage area and failure patterns. Through analysis, they discovered that samples with bigger braiding angle sustained higher peak loads; moreover, the fiber was arranged more closely, and the shock resistance improved as the braiding angle is increasing. Copyright © 2014 John Wiley & Sons, Ltd.