聚苯硫醚复合材料高速冲击破坏特征的微观分析
A MICROSCOPE STUDY OF IMPACT FRACTURE CHARACTERISTICS OF PPS COMPOSITES
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摘要: 本工作利用霍普金森分离杆(SHPB)方法,对三种连续玻璃纤维和碳纤维增强聚苯硫醚(PPS)复合材料层压板进行了冲击试验,集中讨论了材料的破坏特征,试图为建立更为合理的高应变速率下复合材料横向冲击动态响应模型提供依据。结果显示,采用不同的铺层设计以及不同的纤维增强所得材料的损伤形貌有很大区别,纤维/树脂的界面粘结对微观开裂机理的影响显着。
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关键词:
- PPS复合材料层压板 /
- 霍普金森分离杆 /
- 冲击 /
- 断裂形貌
Abstract: By using the split Hopkinson pressure bar technique,impact tests were carried out on fully clamped three-point bending laminated beam specimens made from continuous glass fiber and carbon fiber reinforced polyphenylene sulfide (PPS) of three types of lay-up constructions.The paper focuses research interests on scanning electronic microscopic (SEM)investigation of the impact failure morphology with the aim of providing phenomenological background for working out a new model which would describe more rationally the dynamic response behaviour during transverse impact,as well understanding comprehensively the dominant failure patterns at high strain rate.The results show that the laminate fracture morphology resulting from the given experimental conditions possesses distinct feature for every laminate and is a function of both material characteristics and lay-up constructions.Fiber/matrix interfacial bonding exerts important influence on the microcracking mechanism.-
Keywords:
- PPS composite laminates /
- split Hopkinson pressure bar /
- impact /
- failure morphology
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