Laboratoire Ondes et Milieux Complexes, LOMC FRE CNRS 3102, FANO FR CNRS 3110, Université du Havre, Place Robert Schuman, 76610 Le Havre, France.
Ultrasonics. 2012 Mar;52(3):427-34. doi: 10.1016/j.ultras.2011.10.004. Epub 2011 Oct 18.
A measurement method is proposed for the ultrasonic characterization of a fluid layer, corresponding to the resin transfer molding (RTM) manufacturing process. The ultrasonic velocity and attenuation of the silicone oil are measured in three samples having different viscosities. The measurement method is established on the basis of the attenuation of ultrasonic waves in fluids. A correction of the beam diffraction is implemented to improve measurement precision. A single element transducer with central frequency of 15 MHz is used. The tested fluids simulate the industrial resin used to manufacture composite materials. When injecting this resin, its viscosity increases until it reaches a critical state of polymerization. In this paper we focus on ultrasonic characterization of three fluids representing three intermediate cases of fluid resin during its injection before reaching the polymerization state.
提出了一种用于超声表征树脂传递模塑（RTM）制造工艺中流体层的测量方法。在三个具有不同粘度的样品中测量硅油的超声速度和衰减。该测量方法基于流体中超声波的衰减。为了提高测量精度，实施了对波束衍射的修正。使用中心频率为 15MHz 的单个元件换能器。测试的流体模拟用于制造复合材料的工业树脂。当注入这种树脂时，其粘度会增加，直到达到聚合状态的临界状态。在本文中，我们专注于在达到聚合状态之前注入期间代表三种中间情况的三种流体的超声特性。
