Online Process Monitoring and Control by Dielectric Sensors for a Composite Main Spar

Abstract:

An online monitoring scheme to determine viscosity and permeability for a composite main spar infusion is presented. During the manufacturing process, defects such as dry spots and pores can occur and lead to poor part quality. In this study, dielectric sensors are used to create the information needed to model the process. Several experiments have been carried out to investigate the correlation between the sensors signal and the viscosity and to derivate constitutive equations. The provided data and the derived permeabilities are integrated into a simulation model of a cross section of the composite main spar. As a result, the real permeability can be identified. The knowledge of these parameters is one of the key aspects for a prediction of the resin flow and therefore for an improved process control.

• Periodical: Materials Science Forum (Volumes 825-826)
• Pages: 936-943
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.825-826.936
• Online since: July 2015
• Authors: Arne Breede*, Maryam Kahali Moghaddam, Christian Brauner, Walter Lang, Axel Herrmann
• Keywords: Composite Main Spar, Dielectric Analysis, Infusion Simulation, Process Control, Process Monitoring, Virtual Process Chain

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