Development of Circuits for Excitation and Reception in Ultrasonic Transducers for Generation of Guided Waves in Hollow Cylinders for Fouling Detection

This work presents circuits that are developed to excite ultrasonic transducers transmitters and to receive the coming signals of ultrasonic transducers receivers, via hollow cylinder, converted into guided waves so that this system (transmitter and receiver) can be used for fouling detection. The fouling is a problem that has been present in the chemical, petroleum, food and pharmaceutical industries. It consists of the deposition of heavy organic materials and other dissolved solids or in suspension in fluid transport system. The ultrasonic guided waves present specific characteristics and have demonstrated good results in detection of flaws in piping. The circuits are presented and experimental results discussed