Defects in woven preforms: Formation mechanisms and the effects of laminate design and layup protocol
Defects in woven preforms: Formation mechanisms and the effects of laminate design and layup protocol
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DOI：
10.1016/j.compositesa.2013.04.004
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发表时间：
2013-08-01
影响因子：
8.7
通讯作者：
Potter, Kevin
中科院分区：
文献类型：
--
作者：
Lightfoot, James S.;Wisnom, Michael R.;Potter, Kevin
缺陷，如平面内波纹和平面外丝束皱纹，导致RTM制造的复合材料部件的机械性能显着降低的基础上编织预制件。为了避免这个问题，并在工业过程中实现更高的接受率，必须了解这些缺陷背后的机制。本文提出了一种机制，这些缺陷的形成，这是支持通过铺叠试验的机织预制件。层压设计和铺叠协议被认为是该机制背后的重要驱动因素。缺陷严重程度可以通过智能堆叠顺序设计来控制，并通过手动成型操作和铺层期间的层间粘附来减少层间桥接。(C)2013作者由爱思唯尔有限公司出版。保留所有权利。
Defects, such as in-plane waviness and out-of-plane tow wrinkles, cause significant reductions in the mechanical performance of RTM-manufactured composite parts based on woven preforms. To avoid this problem and achieve a greater acceptance rate in industrial processes, the mechanisms behind these defects must be understood. This paper presents a mechanism for the formation of these defects, which is supported through layup trials of woven preforms. Laminate design and layup protocol were found to be significant drivers behind the mechanism. Defect severity can be controlled through intelligent stacking sequence design and reducing ply bridging by manual forming actions and ply-ply adhesion during layup. (C) 2013 The Authors. Published by Elsevier Ltd. All rights reserved.