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- W2003554997 abstract "We designed and fabricated acoustic matching layers made of a BaTiO3/epoxy 0–3 composite material for a lead-free ultrasonic flowmeter. Specific acoustic impedance of fabricated 0–3 composite was controlled by changing volume fraction of BaTiO3 fine particles. When the volume fraction of BaTiO3 fine particles was 40 vol % or less, sufficiently uniform 0–3 composite materials and various specific acoustic impedances of 2.6–6.9 × 106 kg/m2s were obtained. For improving an accuracy of a lead-free ultrasonic transducer with (K,Na)NbO3-based ceramics, a pair of acoustic matching layers with a specific acoustic impedance of 6.35 × 106 kg/m2s and a thickness of 0.260 mm were fabricated. By using the fabricated acoustic matching layers in a lead-free ultrasonic flowmeter, the amplitude of output voltage was improved by 35% compared to that using commercialized matching layers. Even in comparison with the commercialized ultrasonic flowmeter with PZT-based materials, the amplitude of output voltage with the fabricated composite matching layers was 83.1%. The lead-free ultrasonic flowmeter with the fabricated composite matching layer had high accuracy of a flow rate error of 3.5% or less. From above results, the effectiveness of the optimized composite matching layers was verified." @default.
- W2003554997 created "2016-06-24" @default.
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- W2003554997 date "2015-01-01" @default.
- W2003554997 modified "2023-09-24" @default.
- W2003554997 title "Design and fabrication of acoustic matching layer for lead-free ultrasonic flowmeter" @default.
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- W2003554997 doi "https://doi.org/10.2109/jcersj2.123.317" @default.
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