Bolt-Clamped Langevin Transducer (BLT) Type Ultrasonic Emitter with External Resonance Frequency Adjustment Mechanism

Hikaru Miura; Takashi Kasashima

doi:10.1250/ast.e25.45

Acoustical Science and Technology

Online ISSN : 1347-5177
Print ISSN : 1346-3969
ISSN-L : 0369-4232

Bolt-Clamped Langevin Transducer (BLT) Type Ultrasonic Emitter with External Resonance Frequency Adjustment Mechanism

Hikaru Miura, Takashi Kasashima

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Keywords: Ultrasonic emitter, Bolt-clamped Langevin transducer, Frequency adjustment, Addition of mass

JOURNAL OPEN ACCESS Advance online publication

Article ID: e25.45

DOI https://doi.org/10.1250/ast.e25.45

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Abstract

In general, the resonance frequencies of ultrasonic emitters that use bolt-clamped Langevin transducers differ slightly. However, when using these emitters in an arrayed device, the resonance frequencies of each emitter must be matched. In this paper, the arbitrary reduction of the resonance frequency by adding a small amount of mass after fabrication is examined. The resonance frequency was lowered by adding more mass, demonstrating the utility of this method.

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https://creativecommons.org/licenses/by-nd/4.0/

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