The development of a shock-tube based characterization technique for air-coupled ultrasonic probes.
The present paper proposes a new characterization technique for air-coupled ultrasound probes. The technique is based on a shock tube to generate a controlled pressure wave to calibrate transducers within their operating frequency range. The aim is to generate a high frequency pressure wave (at least up to 200 kHz) with the low energy levels typical of commonly used air-coupled ultrasound probes. A dedicated shock-tube has been designed and tested to assess calibration performances. The sensor transfer function has been measured by using a pressure transducer as reference.
DIISM, Università Politecnica delle Marche, Ancona, Italy.
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Revel
DIISM, Università Politecnica delle Marche, Ancona, Italy.
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Pandarese
DIISM, Università Politecnica delle Marche, Ancona, Italy. Electronic address: a.cavuto@univpm.it.
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Cavuto
Air-coupled ultrasound; Calibration; Shock-tube; Transducer characterization