Скачать или смотреть Quality Control of Ultrasound Transducers Using Distribution-Free Overlapping Coefficients

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Title: Quality Control of Ultrasound Transducers Using Distribution-Free Overlapping Coefficients

Author: Martin Angerer{1}, Michael Zapf{1}, Martin Koch{2}, Nicole V. Ruiter{1}

Affiliation: {1}Karlsruhe Institute of Technology, Germany; {2}Technische Universität Dresden, Germany

Abstract: A method for quality control of ultrasound transducer arrays is presented by performing electro-mechanical impedance measurements at five manufacturing states. Ten paramter were derived from these measurements and statistically analyzed. A metric was derived to identify the paramters, who show high sensitivity to changes in manufacturing, and low sensitivity to additional parasitic circuit elements. The bandwidth of the electrical input power was found to be the most promising paramter. It allows reliable identification of manufacturing defects and therefore presents a easy-to-obtain criteria for quality control of our ultrasound transducer.

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