期刊
COMPOSITE STRUCTURES
卷 127, 期 -, 页码 260-266出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compstruct.2015.03.026
关键词
Composite T-joint; Fatigue; Life prediction; Constant life diagram
资金
- ARDB
The carbon fiber/epoxy composite (CFC) T-joints were fabricated and tested to determine their fatigue life under a standard fighter aircraft spectrum load sequence, mini-FALSTAFF with various reference loads. Further, the fatigue life of T-joint subjected to the same spectrum load sequence was predicted. For this purpose, the static pull-out (tension) and push-in (compression) tests were conducted on T-joints. Then, the constant amplitude fatigue tests were conducted to determine the load-life (P-N) curves at three different load ratio, R = Pmin/Pmax Of 0.1, -1.0 and 10.0. The static and fatigue test data generated was then employed to construct constant life diagram (CLD) for T-joint. The fatigue damage for each of the rain flow counted load cycle of mini-FALSTAFF spectrum load sequence was determined using CLD. Using linear damage accumulation theory, the fatigue life of T-joint was estimated. The predicted fatigue life was observed to agree quite well with experimental results. (C) 2015 Elsevier Ltd. All rights reserved.
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