Evaluation of transverse crack initiation in cross-ply and quasi-isotropic CFRP laminates under fatigue loading

研究成果: Paper査読

抄録

A method has been proposed to predict the fatigue life to the transverse crack initiation in cross-ply and quasi-isotropic carbon fiber reinforced plastic (CFRP) laminates. The six kinds of the laminates were formed of the two kinds of the prepregs, T800S/3900-2B with toughened interlaminar layers and T800H/3631 without toughened interlaminar layers. The unidirectional and cross-ply laminates of the stacking sequence of [90] 12 , [0/90 4 ] S and [0/90 6 ] S were formed of the T800S/3900-2B prepreg, and the cross-ply and quasi-isotropic laminates of the stacking sequence of [0/90 2 ] S , [0/90 6 ] S and [45/0/-45/90] S were formed of T800H/3631 prepreg. Tensile fatigue tests were performed under load control using a hydraulic fatigue testing machine. The transverse crack initiation in the laminates under fatigue loading was evaluated by modifying the Smith-Watson-Topper (SWT) model, which can evaluate the mean stress effect on the fatigue life. Finally, it was found that the initiation of transverse crack in the laminates with the various laminate configuration can be predicted using the modified SWT model, and that means that it is possible to predict the initiation of transverse crack in the laminates with the various laminate configuration using S-N curve of unidirectional laminates in 90° direction.

本文言語English
ページ550-555
ページ数6
出版ステータスPublished - 2015 1 1
イベント34th Conference and the 28th Symposium of the International Committee on Aeronautical Fatigue and Structural Integrity, ICAF 2015 - Helsinki, Finland
継続期間: 2015 6 12015 6 5

Conference

Conference34th Conference and the 28th Symposium of the International Committee on Aeronautical Fatigue and Structural Integrity, ICAF 2015
国/地域Finland
CityHelsinki
Period15/6/115/6/5

ASJC Scopus subject areas

  • 安全性、リスク、信頼性、品質管理
  • 土木構造工学

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