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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/4966

Title: Development of a Control Strategy for Monitoring the Delaminating Damage in Drilling of Carbon Composite Laminates
Authors: Andoh, P.Y.
Davis, F.
Owusu-Ofori, S.
Keywords: Composite Laminates
Drilling,
Damage
Acoustic Emission
Issue Date: 2010
Publisher: Journal of Science and Technology
Citation: Journal of Science and Technology, Vol. 30, No. 2 (2010), pp 142 - 156
Abstract: Composite materials have attractive features, such as high strength to weight ratio and high stiffness to weight ratio. However, they are easily damaged during machining operations. A typical damage is delamination, which can occur when fiber reinforced composite laminates are drilled. Control of delamination is critical for the utilization of composite materials. This research seeks to develop a technique to control inter-ply delaminations during the drilling of laminated composites. A statistical factorial design technique is used to develop a model that relates the feed rate, cutting speed, and tool size to the acoustic parameters. A control algorithm is built from the model. The algorithm is used to modify the instantaneous feed rate in order to maintain the acoustic energy below a threshold value. This control strategy is effective in limiting the area of delamination. However, using high cutting speeds avoid the delamination of materials, but leads to high production costs due to excessive tool wear.
Description: Article published in the Journal of Science and Technology, Vol. 30, No. 2 (2010), pp 142 - 156
URI: http://hdl.handle.net/123456789/4966
Appears in Collections:Journal of Science and Technology 2000-

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