Measurements of parameters of leaky waves using ultrasonic material characterization system with electronic scanning

In this paper, we present an ultrasonic material characterization system with electronic scanning. In this system, leaky acoustic waves are generated by a single transducer whose focus is located at the water-specimen interface, and the spatial field distribution of the reflected wave is recorded by a linear array of receiving transducers. The relative position of the transmitting transducer and the receiving linear array is constant in this experimental setup, and the measurement time is only limited by the time of the wave propagation and speed of the electronic data acquisition system. The parameters of the leaky waves can be obtained by processing the set of the output waveforms.