Evaluation and Prediction of Fatigue Damage Initiation Life of CFRP Quasi-isotropic Laminate in the Very High Cycle Region

DOI Web Site

Bibliographic Information

Other Title
  • CFRP擬似等方性積層板の超高サイクル域における疲労損傷発生寿命の評価とその予測

Abstract

<p>Carbon fiber reinforce plastics (CFRP) have been applied to structural materials of blades of wind turbines and aircraft turbine engines. These blades may suffer from very high cycle fatigue up to more than 107 cycles. However, conventional fatigue testing methods consume longer period in excess of 1 year for obtaining only 1 fatigue data in the very high cycle region. In this study, axial ultrasonic fatigue tests were conducted up to 109–1010 cycles. The results showed that no fatigue limit was found up to 109 cycles. Fatigue damage initiation life was compared with results obtained by a hydraulic serve fatigue testing machine to discuss the strain rate dependency and the feasibility of the prediction of fatigue damage initiation life by using a modified Walker model.</p>

Journal

Keywords

Details 詳細情報について

Report a problem

Back to top