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Published in:
01-02-2007
Relationship Between the Depth of Drilling and Residual Strain Relief in Fiber Reinforced Composite Materials
Published in: Journal of Materials Engineering and Performance | Issue 1/2007
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Abstract
The mechanical properties of fiber are quite different from matrix in composite laminates, and parameters, such as the angle of ply, and the temperature and pressure during composite forming, would play an important role in residual stress in the composite. The residual strains between layers depend on the forming parameters and their mechanical properties. In this article, grating rosette, Moiré interferometry, and step drilling-hole method are used to measure the relief strains when drilling each single laminate step by step, and find some relationship between the depth of drilling and residual strain relief in fiber reinforced composite material.