섬유

polymeric diaphragm forming of complex-curvature thermoplastic composite parts

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 305
an experimental autoclave is employed for polymeric diaphragm forming of carbon-fiber reinforced polyetheretherketone (peek) innovative tool design, resulting in cheap and light mould construction, gives cycle times of 60 min. male and female hemispherical section parts, as well as a box-shaped model trailer, are formed by applying differential pressures across a double polyimide diaphragm. good part quality, excellent surface finish, controlled fiber-placement and uniform thickness, between - 10 and $plus$ 13, are demonstrated. the phenomenon of 'shear-buckling' occurs in female moulds as the ratio of lay-up area to formed area increases. diaphragm elongation is a function of mould and part geometry, and is shown to be quite different between upper and lower diaphragms and between male and female moulds, as well as being a function of surface-ply orientation. (author abstract) 7 refs
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