Abstract
In vacuum assisted resin transfer molding (VaRTM), flow monitoring was extensively investigated to suppress molding defects. However, flow monitoring technics in which a sensor is not buried inside the molded article cannot provide sufficient data for three-dimensional monitoring. In this study, we proposed a three-dimensional flow monitoring technique that does not involve burying a sensor inside the molded article. We acquired the three-dimensional data by a data assimilation method integrating stochastic simulation of resin flow during a VaRTM process with the observation of flow front location and reconstructed a three-dimensional resin flow. The proposed technique was validated through a numerical experiment. The result confirmed that our technique could estimate the three-dimensional resin flow. In addition, we confirmed that the permeability could be estimated.
