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http://dx.doi.org/10.3795/KSME-A.2004.28.3.281

The Effect of Fiber Stacking Angle on the Relationship Between Fatigue Crack and Delamination Behavior in a Hybrid Composite Materials  

Song, Sam-Hong (고려대학교 공학기술연구소 및 인덕대학 기계시스템)
Kim, Cheol-Woong (고려대학교 기계공학과)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.28, no.3, 2004 , pp. 281-288 More about this Journal
Abstract
The hybrid composite material (Al/GFRP laminates) are applied to the fuselage and wing in a aircraft. Therefore, Al/GFRP laminates suffer from the cyclic bending moments. This study was to evaluate the effect of fiber stacking angle on the fatigue crack propagation and delamination behavior using the relationship between crack growth rate (da/dN) and stress intensity factor range (ΔK) in Al/GFRP laminates under cyclic bending moment. The variable delamination growth behavior in case of three different type of fiber orientations, i.e., [Al/O$_2$/Al], [Al/+45$_2$/Al] and [Al/90$_2$/Al] at the interface of Al layer and glass fiber layer was measured by ultrasonic C-scan images. As results of this study, It represent that the delamination shape should turns out to have more effective characteristics on the fiber stacking angle. The extension of the delamination zone in case of [Al/+45$_2$/Al] and [Al/90$_2$/Al] were not formed along the fatigue crack profile. The shape of delamination zone depend on fiber stacking angle and the variable type with the delamination contour decreased non-linearly toward the crack tip at the Al layer.
Keywords
Hybrid Composite Materials; Fatigue Crack; Delamination; Fiber Stacking Angle; Crack Growth Rate; Stress Intensity Factor Range; Delamination Area; Fiber Bridging Effect;
Citations & Related Records
Times Cited By KSCI : 8  (Citation Analysis)
연도 인용수 순위
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