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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/42300

Title: Two-Stage Cumulative Bending Fatigue Behavior for the Adhesively Bonded Aluminum Honeycomb Sandwich Panels
Authors: Yi-Ming Jen;Fu-Lung Teng;Ta-Cheng Teng
Contributors: 國立臺灣海洋大學:機械與機電工程學系
Keywords: Honeycomb sandwich structure;Cumulative fatigue;Stiffness degradation;Residual strength;Damage
Date: 2014-02
Issue Date: 2017-05-08T03:43:38Z
Publisher: Materials & Design
Abstract: Abstract:This study experimentally investigates two-stage cumulative bending fatigue behavior of adhesively bonded aluminum sandwich panels with local indentation failure mode. Experimental results show that the sums of cycle ratios of both stages are larger and less than unity when their loading sequence is low-to-high and high-to-low, respectively. The Miner’s rule fails to predict the loading sequence effect observed in cumulative fatigue tests. The variations in stiffness and residual strength of the studied specimens with the applied cycles in the constant-amplitude fatigue tests were also observed and recorded. Furthermore, the non-linear damage rule, which is based on the stiffness degradation of the specimens, provides better prediction of the remaining fatigue lives in the second stage than the traditional linear damage rule. However, the residual strength remains almost constant until the final stage of the constant-amplitude fatigue tests, demonstrating that residual strength is not a suitable indicator of non-linear damage in predicting the cumulative fatigue lives.
Relation: 54, pp.805-813
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/42300
Appears in Collections:[機械與機電工程學系] 期刊論文

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