Formability and Failure Mechanisms of Woven CF/PEEK Composite Sheet in Solid-State Thermoforming
作者: Bing ZhengXiping GaoMaoyuan LiTianzhengxiong DengZhigao HuangHuamin ZhouDequn Li
刊名: Polymers, 2019, Vol.11 (6)
来源数据库: Directory of Open Access Journals
DOI: 10.3390/polym11060966
关键词: Woven CF/PEEKSolid-state thermoformingFormabilityFlexural testErichsen testFailure mechanisms
原始语种摘要: In this study, the formability of woven carbon-fiber (CF)-reinforced polyether-ether-ketone (PEEK) composite sheets in the solid-state thermoforming process were investigated, and the failure mechanisms were discussed. The formability of the woven CF/PEEK sheets were analyzed using flexural tests, Erichsen test, and microscopic observation. The results show that the formability of CF/PEEK sheets significantly increases as the temperature rises from 165 to 325 °C, and slightly decreases as the deformation speed rises from 2 to 120 mm/min. The deformation of the sheets is caused by plastic deformation, shear deformation and squeeze deformation, without plastic thinning and fiber slippage, which is due to the restriction of the solid matrix and locked fibers. Moreover, the wrinkles will...
全文获取路径: DOAJ  (合作)

  • PEEK 聚醚醚酮
  • woven 编织
  • thermoforming 热成型
  • deformation 应变
  • formability 成型性能
  • sheets 钢板
  • plastic 可塑性的
  • delamination 分层
  • slippage 空转
  • reinforced 加筋的