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http://dx.doi.org/10.3795/KSME-A.2015.39.12.1281

Stress Spectrum Algorithm Development for Fatigue Crack Growth Analysis and Experiment for Aircraft Wing Structure  

Chun, Young Chal (Dept. of Mechanical Engineering, Kunsan Nat'l Univ.)
Jang, Yun Jung (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.39, no.12, 2015 , pp. 1281-1286 More about this Journal
Abstract
Fatigue cracks can be generated in aircraft as a result of the cumulative time spent during flight operations, which can extend for long periods of time and cover a variety of missions. If a crack occurs in an aircraft's main spar, it can generate many problems, including a lift time reduction. To solve this problem, it was necessary to perform an analysis of fatigue crack growth in the fatigue critical locations. Much time and expense is involved in generating the stress needed for a crack propagation analysis over a long period of time to obtain the amount of data required for an actual aircraft. In this paper, an algorithm is developed that can calculate the spectrum of stress over a long period of time for a mission by the Southwest Research Institute, which is based on the short-time load factor data produced using the peak-valley cycle counting method.
Keywords
Stress-Spectrum; Algorithm; Peak-Valley Cycle Counting; Fatigue Critical Location; Wing Spar;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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