三维编织结构对低速冲击性能的影响
首发时间:2008-06-02
摘要:针对三维编织复合材料在制造、使用和维护过程中受到外来物体的低速冲击而造成结构的损伤和承载能力下降的问题,本文使用Instron Dynatup 9200冲击试验机对高强玻璃纤维增强环氧树脂基三维四向、三维五向和三维六向编织结构复合材料试样的抗冲击性能进行了研究,建立了编织结构和冲击性能之间的联系。试验结果表明:不同编织结构的冲击响应不同。与四向和五向编织结构材料相比,三维六向编织结构复合材料发生主要损伤时所需的冲击载荷和冲击能量较大,主要损伤持续时间最短,吸收的能量最少。
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The influence of 3-Dimensional braided structure on the impact resistance characteristic
Abstract:In the process of manufacturing 、using and maintaining , 3-Dimensional(3D) braided composites may subject to low-velocity impact from other objects , which caused the damage of structure and the decrease of load capacity. In this paper, low-velocity impact tests were conducted on 4-Directional、5-Directional and 6-Directional(4-Dir、5-Dir and 6-Dir)glass/epoxy 3D braided composites using Instron Dynatup 9200 drop weight impact test setup. Impact resistance characteristics were studied and the relationship between braided structure and the characteristics were established. Test results showed that braiding structure influenced the impact property evidently. Compared with 4-Dir and 5-Dir structure composites, 6-Dir braided composites needed more load and energy when main damage occurred. The damage of it continued shorter time and absorbed less energy.
Keywords: composites 3D braiding low-velocity impact property braided structure
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No.2192025423412124****
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