Paper Title:

Stiffness Reduction of Woven CFRP and CFRTP Spring under Ultra High Cyclic Fatigue for Vibration Conveyor

Periodical Advanced Materials Research (Volumes 123 - 125)
Main Theme Multi-Functional Materials and Structures III
Edited by Joong Hee Lee
Pages 217-220
DOI 10.4028/www.scientific.net/AMR.123-125.217
Citation Takahiko Yoshi et al., 2010, Advanced Materials Research, 123-125, 217
Online since August, 2010
Authors Takahiko Yoshi, Kazuya Okubo, Toru Fujii
Keywords Carbon Fiber Reinforced Polymer (CFRP), CFRTP, High Humidity, Stiffness Reduction, Ultra High Cyclic Fatigue
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Abstract

This paper investigated the stiffness reduction of the plate spring made of CFRP (Carbon cloth and epoxy) subjected to ultra high cyclic fatigue loading under high relative humidity. For practical uses, this paper proposes a new design which prevents the significant degradation with stiffness change of the plate spring at high humidity. Remarkable stiffness reduction of the plate spring due to cracks and delaminations around inter layer could be prevented by using CFRTP rather than that by using CFRP, when ultra high cyclic loading was applied to the plate spring under high humidity condition.