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http://dx.doi.org/10.3795/KSME-A.2005.29.2.284

Stress Distribution and Crack Initiation Behavior due to the Defect Locations in Monolithic Aluminum and Al/Glass Fiber Laminates  

Song Sam-Hong (고려대학교 기계공학과)
Kim Jong-Sung (현대자동차 남양연구소)
Oh Dong-Joon (안동대학교 기계교육과)
Yoon Kwang-Joon (건국대학교 항공우주공학과)
Kim Cheol-Woong (건국대학교 인공근육연구센터)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.29, no.2, 2005 , pp. 284-292 More about this Journal
Abstract
Material flaws in the from of pre-existing defects can severely affect the crack initiation. Stress distribution and crack initiation life of engineering materials such as monolithic aluminum alloy and Al/Glass fiber laminate may be different according to the defect location. The aim of this study is to evaluate effects of relative location of defects around the circular hole in monolithic aluminum and Al/Glass fiber laminates under cyclic bending moment. Stress distribution and crack initiation behavior near a circular hole are considered. Results of Finite Element (FE) model indicated the features of different stress field due to the relative defects positions. Especially, the defects positions at ${\theta}=0^{\circ}\;and\;{\theta}=30^{\circ}$ was strongly effective in stress concentration factor ($K_t$) and crack initiation behavior.
Keywords
Monolithic Aluminum; Al/Glass Fiber Laminates; Circular Hole; Defect; Stress Distribution; Crack Initiation Life; Multi-Site Damage Crack (MSD);
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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