Failure mode maps of natural and synthetic fiber reinforced composite sandwich panels
Failure mode maps of natural and synthetic fiber reinforced composite sandwich panels
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DOI：
10.1016/j.compositesa.2016.12.021
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发表时间：
2017-03-01
影响因子：
8.7
通讯作者：
Stocchi, Ariel
中科院分区：
文献类型：
--
作者：
Pablo Vitale, Juan;Francucci, Gaston;Stocchi, Ariel
研究了天然纤维和合成纤维增强复合材料夹芯板在三点弯曲载荷作用下的力学性能和破坏模式。分析模型的开发，以预测所有标本的力学响应与不同的facebook-core组合。研究的模式包括芯剪切、芯压碎、面挤压、面屈服和面剥离。黄麻增强聚酯和玻璃纤维增强聚酯被用作蒙皮。采用真空辅助树脂传递模塑法（VARTM）制备了纤维增强蜂窝芯材，建立了复合材料夹层板的失效机理图，预测了复合材料夹层板的失效。测试了三点弯曲下夹层板的响应直至失效，并将结果与分析预测进行了比较。预测和观察到的模式之间有很好的一致性。（C）2016 Elsevier Ltd.保留所有权利。
In the present work, mechanical properties and failure modes of natural and synthetic fiber reinforced composite sandwich panels under three point bending were studied. Analytical models were developed in order to predict the mechanical response of all the specimens with different facesheet - core combinations. The modes studied include core shear, core crushing, face wrinkling, face yielding, and facesheet debonding.Natural fiber reinforced honeycomb and commercial PVC foam were used as cores. Jute reinforced polyester and glass fiber reinforced polyester were used as skins. Fiber reinforced honeycomb cores were obtained by Vacuum Assisted Resin Transfer Molding (VARTM).Failure mechanism maps were constructed in order to predict the failure of composite sandwich panels. The response of the sandwich panels under three point bending was measured up to failure, and the results were compared with the analytical predictions. A good agreement between the predicted and observed modes was found. (C) 2016 Elsevier Ltd. All rights reserved.