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http://dx.doi.org/10.3795/KSME-A.2017.41.2.129

Damage Tolerance Assessment for Fatigue-Critical Locations of Wing Structure of Aged Aircraft  

Chun, Young-Cheol (Dept. of Mechanical Engineering, Kunsan Nat'l Univ.)
Kim, Won-Cheol (Dept. of Mechanical Engineering, Kunsan Nat'l Univ.)
Jin, Ji-Won (Dept. of Mechanical Engineering, Kunsan Nat'l Univ.)
Chung, Tae-Jin (Dept. of Mechanical Engineering, Kunsan Nat'l Univ.)
Kang, Ki-Weon (Dept. of Mechanical Engineering, Kunsan Nat'l Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.41, no.2, 2017 , pp. 129-136 More about this Journal
Abstract
This study aims to assess the damage tolerance of the wing structure of aged aircraft with long-term service through the fatigue crack growth analysis and tests. For the fatigue-critical locations (FCL) W2 and W4 in the wing structure, the fatigue stress spectrum was derived based on a previous study. Thereafter, a crack propagation analysis for the FCLs was conducted using the commercial software $NASGRO^{TM}$. The algorithm for the fatigue stress spectrum was verified. Fatigue crack growth tests were then performed for two types of specimens: Type #1 was extracted from the wing structure of aged aircraft, and Type #2 was made of the same material as the wing structure. By comparing the experimental results of these specimens, we assessed the damage tolerance of the wing structure of aged aircraft with service time.
Keywords
Fatigue Stress Spectrum; Fatigue Critical Location; Fatigue Crack Growth Analysis; Fatigue Crack Growth Experiment;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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