METHOD AND DEVICE FOR INSPECTING INDUSTRIAL ULTRASONIC WAVE OF MEMBER BASED ON TIME INVERSION

摘要

PURPOSE: To guarantee a high-performance inspection and improve inspection accuracy by emitting the unfocused ultrasonic wave to an analysis region from a matrix of transducers, and storing the timewise layout and shape of the activation signal obtained by the time reversal of the echo signal. CONSTITUTION: The unfocused ultrasonic wave is emitted from a matrix of transducers 30 capable of being arranged linearly or two-dimensionally. The matrix can be formed into a plane or a concave surface to guarantee the accurate focusing of light flux. A process line including a receiver 32 feeding the unfocused initial light flux or the echo signal generated by the activation signal to the first memory 10 sending the inverted echo signal is connected to each transducer 30. The initial light flux is generated by a transmitter 31 receiving the information for transmission from the second memory 11 receiving the inverted echo signal on each sector under inspection each time it is generated.