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A Study on the Effect of Rivet Layout on the Stress Variation in Doubler Repair  

Moon, Ju-Yeon (국방대학교 무기체계학)
Shin, Ki-Su (국방대학교 국방과학학부, 항공공학)
Publication Information
Journal of the military operations research society of Korea / v.36, no.1, 2010 , pp. 91-102 More about this Journal
Abstract
Doubler repair is one of the frequently applied methods to repair cracks which occur at the structure of aircraft weapon systems. The requirement of the doubler repair for some of aging aircraft has increased more recently. However very few researches have been conducted until now. In this paper, the effect of the various doubler repair methods was evaluated. Especially, the relationship between the array of revet and the effect of stress concentration was investigated. To calculate variation of the stress with different repair methods, commercial FEA program was utilized. As a result, it was shown that the main factor for the variation of stress is pitch and number of revet line. Furthermore the optimized array of revet for the specific geometries of doubler was suggested.
Keywords
Doubler Repair; FEM : Feninte Element Method; Rivet Layout;
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