Apparatus for Faster Ultrasonic-Lamb-Wave Testing

An ultrasonic-transducer fixture containing multiple pairs of fixed transducers, plus associated electronic transducer-multiplexing circuitry have been developed to accelerate the acquisition of data on the dispersion of ultrasonic leaky Lamb waves (LLWs) in plate specimens of laminated composite (matrix/fiber) materials. The fixture and multiplexing circuitry can readily be incorporated into a previously constructed ultrasonic-LLW system that contains a single pair of movable ultrasonic transducers.