Peripherally bolted torsional Langevin vibrator with large diameter

Yoshikazu Koike; Manabu Kihara; Jun Satonobu; Kentaro Nakamura; Sadayuki Ueha

doi:10.1250/ast.18.239

Peripherally bolted torsional Langevin vibrator with large diameter

Yoshikazu Koike, Manabu Kihara, Jun Satonobu, Kentaro Nakamura, Sadayuki Ueha

Research output: Contribution to journal › Article › peer-review

Abstract

To fabricate a bolt-clamped large diameter Langevin torsional vibrator as designed is usually difficult. A torsional vibrator tightened with an outside bolt is proposed in which the designed characteristics in the resonant vibration of the normal mode is achieved. A torsional vibrator 80 millimeters in diameter with a calculated resonant frequency of 28 kHz has been fabricated. The resonant frequency of the torsional vibrator is 26.1 kHz, the quality factor is 890 and the maximum angular velocity is 4.1 rad/s. It is confirmed that the vibration characteristics obtained with the externally-bolted transducer are improved compared with the torsional transducer tightened with an inside bolt.

Original language	English
Pages (from-to)	239-246
Number of pages	8
Journal	Journal of the Acoustical Society of Japan (E) (English translation of Nippon Onkyo Gakkaishi)
Volume	18
Issue number	5
DOIs	https://doi.org/10.1250/ast.18.239
Publication status	Published - 1997

ASJC Scopus subject areas

Acoustics and Ultrasonics

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10.1250/ast.18.239

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abstract = "To fabricate a bolt-clamped large diameter Langevin torsional vibrator as designed is usually difficult. A torsional vibrator tightened with an outside bolt is proposed in which the designed characteristics in the resonant vibration of the normal mode is achieved. A torsional vibrator 80 millimeters in diameter with a calculated resonant frequency of 28 kHz has been fabricated. The resonant frequency of the torsional vibrator is 26.1 kHz, the quality factor is 890 and the maximum angular velocity is 4.1 rad/s. It is confirmed that the vibration characteristics obtained with the externally-bolted transducer are improved compared with the torsional transducer tightened with an inside bolt.",

author = "Yoshikazu Koike and Manabu Kihara and Jun Satonobu and Kentaro Nakamura and Sadayuki Ueha",

year = "1997",

doi = "10.1250/ast.18.239",

language = "English",

volume = "18",

pages = "239--246",

journal = "Acoustical Science and Technology",

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publisher = "Acoustical Society of Japan",

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AU - Koike, Yoshikazu

AU - Kihara, Manabu

AU - Satonobu, Jun

AU - Nakamura, Kentaro

AU - Ueha, Sadayuki

PY - 1997

Y1 - 1997

N2 - To fabricate a bolt-clamped large diameter Langevin torsional vibrator as designed is usually difficult. A torsional vibrator tightened with an outside bolt is proposed in which the designed characteristics in the resonant vibration of the normal mode is achieved. A torsional vibrator 80 millimeters in diameter with a calculated resonant frequency of 28 kHz has been fabricated. The resonant frequency of the torsional vibrator is 26.1 kHz, the quality factor is 890 and the maximum angular velocity is 4.1 rad/s. It is confirmed that the vibration characteristics obtained with the externally-bolted transducer are improved compared with the torsional transducer tightened with an inside bolt.

AB - To fabricate a bolt-clamped large diameter Langevin torsional vibrator as designed is usually difficult. A torsional vibrator tightened with an outside bolt is proposed in which the designed characteristics in the resonant vibration of the normal mode is achieved. A torsional vibrator 80 millimeters in diameter with a calculated resonant frequency of 28 kHz has been fabricated. The resonant frequency of the torsional vibrator is 26.1 kHz, the quality factor is 890 and the maximum angular velocity is 4.1 rad/s. It is confirmed that the vibration characteristics obtained with the externally-bolted transducer are improved compared with the torsional transducer tightened with an inside bolt.

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