应变率效应对短纤维增强热塑性树脂PPS力学性能的影响

STRAIN RATE EFFECT ON THE MECHANICAL PROPERTIES OF SHORT FIBRE REINFORCED THERMOPLASTIC PPS

摘要

摘要: 本文通过大量的实验,研究了应变率效应对短纤维增强热塑性树脂PPS(聚苯硫醚)力学性能的影响,应变率变化范围从10^-4/s～10²/s.并对断口形貌及破坏形式进行了观察.研究结果表明:应变率较高时对材料的强度和模量有明显影响,而且应变率不同断口形貌也存在一定的差别.断口形貌呈脆性破坏.
- 短纤维增强PPS /
- 应变率效应 /
- 力学性能 /
- 断口形貌
Abstract: The compression and tension mechanical behaviors of short fibre reinforced composite material——PPS(Polyphenylene sulfide) overa wide range of strain rates covering six orders of magnitude are described. The fracture appearance and the cross-section of tested specimens were observed. The results show that the strength and Young smodulus of the short fiber reinforced thermoplastic PPS increase with increasing strain rates and reveal that the fracture of short fibre-reinf orced PPS exhibits brittle behavior. The results indicate that the strain rate effect is remarkable.
- short fibre reinforced PPS /
- strain rate effect /
- stress-strain relationships /
- fracture appearance