Progressive Crushing Behavior and Energy Absorption of Unidirectional CFRP Plate under Axial Compression

DOI Web Site 50 References
  • UEDA Masahito
    Department of Mechanical Engineering, College of Science and Technology, Nihon University
  • TAKASHIMA Toyoshi
    Graduate School of Nihon University
  • KATO Yasuyuki
    Department of Mechanical Engineering, College of Science and Technology, Nihon University
  • NISHIMURA Tetsu
    Department of Mechanical Engineering, College of Science and Technology, Nihon University

Bibliographic Information

Other Title
  • 一方向積層ＣＦＲＰ平板の圧縮による連続脆性破壊挙動とエネルギー吸収
  • 1ホウコウ セキソウ CFRP ヘイバン ノ アッシュク ニ ヨル レンゾクゼイセイ ハカイ キョドウ ト エネルギー キュウシュウ

Search this article

Abstract

Progressive crushing tests of unidirectionally laminated carbon fiber reinforced plastic (CFRP) rectangular plate were carried out to reveal its continuous fracture behavior and energy absorption. A special test fixture was developed for the test and fracture process of the CFRP was observed from its side section. Three types of trigger geometries, i.e. chamfer, steeple and V-shape trigger, were machined on each specimen. Film embedded V-shape trigger was also prepared to investigate the effect of initial cracks on energy absorption. The initial fracture behavior strongly affected the ensuing stable fracture process. It was clarified that V-shape trigger specimen was robust over the variation of gage length (unsupported length) as compared to chamfer and steeple trigger specimen which showed smaller energy absorption with longer gage length. A column-like part, which was called pillar in this paper, was observed between fronds under crushing. The fracture was much severe at pillar section than fronds section. Fiber fractures were observed periodically at 50-100 μm length in the pillar section, which coincides with the length of kink band in ultimate compressive failures of CFRP. It was revealed that the thickness of pillar was dominant factor on energy absorption of unidirectional CFRP.

Journal

References(50)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top