关键词: 树脂浸泡工艺, 液体树脂灌注成型工艺, 树脂流动前峰, 微型热电偶, 传感器

Abstract: As a promising component of the resin infusion process (RIP), the liquid resin infusion (LRI) manufacturing process is widely used in aeronautic industries.In order to improve the understanding and the capacity to control the LRI process, this article deals with the problem of fluid front detection and proposes an array of in-situ temperature micro-sensors to predict the position of the resin flow front during the filling stage of the infusion process.The principle is to detect the arrival of the resin front by the temperature change in each sensor.The fluid front detection by micro-thermocouples will permit us to both correlate its result to the measurement of an optical fibre sensor and verify the two-stage infusion in preform.The article presents details of the technique as well as the preliminary results about the in-plane resin flow front and flow front across the preform thickness.

Key words: resin infusion process, liquid resin infusion, fluid flow front, micro-thermocouple, sensors