News Column

Investigators from Queen's University Report New Data on Composite Materials

June 24, 2014

By a News Reporter-Staff News Editor at Journal of Technology -- Investigators discuss new findings in Composite Materials. According to news reporting out of Belfast, United Kingdom, by VerticalNews editors, research stated, "Drilling is a key factor in the manufacturing of holes required for the assemblies of composite laminates in aerospace industry. The quality of holes can be controlled by the choice of tool geometry and process parameters."

Our news journalists obtained a quote from the research from Queen's University, "Simulation of drilling process is an effective method in optimizing the drill geometry and process parameters in order to improve hole quality and reduce the drill wear. In this research, we have developed three-dimensional finite element model for drilling carbon fiber-reinforced. A three-dimensional progressive intra-laminar failure model based on the Hashin's theory is considered. Also, an inter-laminar delamination model which includes the onset and growth of delamination by using cohesive contact zone was developed. It is shown that the induced thrust force, torque, damaged area and delamination are predicted very well with the given drill geometry and process parameters. The delamination area resulted from drilling of carbon fiber-reinforced polymer was predicted successfully using the developed model."

According to the news editors, the research concluded: "The current finite element model using three-dimensional elements and improved damage models showed much better capability in simulation of the drilling process of CFC compared to the previous model using shell elements."

For more information on this research see: Three-dimensional numerical modelling of drilling of carbon fiber-reinforced plastic composites. Journal of Composite Materials, 2014;48(10):1209-1219. Journal of Composite Materials can be contacted at: Sage Publications Ltd, 1 Olivers Yard, 55 City Road, London EC1Y 1SP, England. (Sage Publications -; Journal of Composite Materials -

Our news journalists report that additional information may be obtained by contacting O. Isbilir, Queen's University Belfast, Sch Mech & Aerosp Engn, Belfast, Antrim, United Kingdom.

Keywords for this news article include: Europe, Belfast, United Kingdom, Composite Materials

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Source: Journal of Technology

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