The Effect of Defect Locations on the Stress Distribution and Crack Initiation in Monolithic Aluminum vs. GLARE Hybrid Composite

Abstract:

This paper investigates the effect of the defect location on the stress concentration, the stress distribution, and the crack initiation behavior when the defects were made in the vicinity of the circular hole in the monolithic aluminum and the glass fiber reinforced laminates (GLARE). As the defect location in the vicinity of the circular hole was changed from ° = 90 4 q to ° = 0 1 q , the stress concentration was increased. Generally, the stress concentration of GLARE was about 15% greater than that of the monolithic aluminum. When the defect was at ° = 30 2 q , Multi Site Damage (MSD) crack was found in the monolithic aluminum, but just the main cracks existed in GLARE. The delamination instead of MSD crack was made in GLARE, and it resulted in the prevention against the second crack initiation.

• Periodical: Materials Science Forum (Volumes 486-487)
• Pages: 354-357
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.486-487.354
• Online since: June 2005
• Authors: Cheol Woong Kim, Sam Hong Song, Dong Joon Oh
• Keywords: Circular Hole, Defect Location, Delamination, Glass Fiber Reinforced Laminate GLARE, Monolithic Aluminum, Multi Site Damage (MSD), Stress Concentration, Stress Distribution

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