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Process Analysis of the Hand Lay-Up Method Using CFRP Prepreg Sheets

  • Toshikazu UchidaEmail author
  • Hiroyuki Hamada
  • Koji Kuroda
  • Atsushi Endo
  • Masakazu Migaki
  • Junpei Ochiai
  • Tadashi Uozumi
  • Akihiko Goto
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 9185)

Abstract

The autoclave molding method is performed by stacking CFRP prepreg sheets in a mold; this method is widely used in airplanes and by the automobile industry. Most three-dimensional-shaped parts are manually produced by the hand lay-up stacking sequence method. Because of this, mechanical properties such as shape accuracy and strength vary depending on the worker’s skill. This is the major issue when tackling the difficulty of quality control in hand lay-up molded products. In order to alleviate these quality management difficulties, ideally, all workers are provided operation manuals and obtain the sufficient skills to prevent individual differences from occurring in the hand lay-up process. In this study, we aim to establish qualification criteria and standardize the work process of this method. We discuss how the differences in the hand lay-up work process influence the mechanical performance of molded products, based on the workers’ skill.

Keywords

Hand Lay-Up CFRP Modulus Tensile strength Process analysis Mechanical performance 

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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  • Toshikazu Uchida
    • 1
    Email author
  • Hiroyuki Hamada
    • 2
  • Koji Kuroda
    • 2
  • Atsushi Endo
    • 2
  • Masakazu Migaki
    • 2
  • Junpei Ochiai
    • 1
  • Tadashi Uozumi
    • 3
  • Akihiko Goto
    • 4
  1. 1.UCHIDA Co., Ltd.FukuokaJapan
  2. 2.Kyoto Institute of TechnologyKyotoJapan
  3. 3.Gifu UniversityGifuJapan
  4. 4.Osaka Sangyo UniversityDaitoJapan

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