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Rayleigh Wave Calibration of Acoustic Emission Sensors and Ultrasonic Transducers.
Sensors (Basel) 2019; 19(14)S

Abstract

Acoustic emission (AE) sensors and ultrasonic transducers were characterized for the detection of Rayleigh waves (RW). Small aperture reference sensors were characterized first using the fracture of glass capillary tubes in combination with a theoretical displacement calculation, which utilized finite element method (FEM) and was verified by laser interferometer. For the calibration of 18 commercial sensors and two piezoceramic disks, a 90° angle beam transducer was used to generate RW pulses on an aluminum transfer block. By a substitution method, RW receiving sensitivity of a sensor under test was determined over the range of frequency from 22 kHz to 2 MHz. Results were compared to the sensitivities to normally incident waves (NW) and to other guided waves (GW). It was found that (1) NW sensitivities are always higher than RW sensitivities, (2) differences between NW and RW receiving sensitivities are dependent on frequency and sensor size, (3) most sensors show comparable RW and GW receiving sensitivities, especially those of commonly used AE sensors, and (4) the receiving sensitivities of small aperture (1 mm diameter) sensors behave differently from larger sensors.

Authors+Show Affiliations

Department of Materials Science and Engineering, University of California, Los Angeles (UCLA), Los Angeles, CA 90095, USA. ono@ucla.edu.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31315201

Citation

Ono, Kanji. "Rayleigh Wave Calibration of Acoustic Emission Sensors and Ultrasonic Transducers." Sensors (Basel, Switzerland), vol. 19, no. 14, 2019.
Ono K. Rayleigh Wave Calibration of Acoustic Emission Sensors and Ultrasonic Transducers. Sensors (Basel). 2019;19(14).
Ono, K. (2019). Rayleigh Wave Calibration of Acoustic Emission Sensors and Ultrasonic Transducers. Sensors (Basel, Switzerland), 19(14), doi:10.3390/s19143129.
Ono K. Rayleigh Wave Calibration of Acoustic Emission Sensors and Ultrasonic Transducers. Sensors (Basel). 2019 Jul 16;19(14) PubMed PMID: 31315201.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Rayleigh Wave Calibration of Acoustic Emission Sensors and Ultrasonic Transducers. A1 - Ono,Kanji, Y1 - 2019/07/16/ PY - 2019/06/03/received PY - 2019/07/08/revised PY - 2019/07/11/accepted PY - 2019/7/19/entrez PY - 2019/7/19/pubmed PY - 2019/7/19/medline KW - FEM calculation KW - Rayleigh waves KW - acoustic emission sensors KW - calibration KW - guided waves KW - normally incident waves KW - receiving sensitivities KW - ultrasonic transducers JF - Sensors (Basel, Switzerland) JO - Sensors (Basel) VL - 19 IS - 14 N2 - Acoustic emission (AE) sensors and ultrasonic transducers were characterized for the detection of Rayleigh waves (RW). Small aperture reference sensors were characterized first using the fracture of glass capillary tubes in combination with a theoretical displacement calculation, which utilized finite element method (FEM) and was verified by laser interferometer. For the calibration of 18 commercial sensors and two piezoceramic disks, a 90° angle beam transducer was used to generate RW pulses on an aluminum transfer block. By a substitution method, RW receiving sensitivity of a sensor under test was determined over the range of frequency from 22 kHz to 2 MHz. Results were compared to the sensitivities to normally incident waves (NW) and to other guided waves (GW). It was found that (1) NW sensitivities are always higher than RW sensitivities, (2) differences between NW and RW receiving sensitivities are dependent on frequency and sensor size, (3) most sensors show comparable RW and GW receiving sensitivities, especially those of commonly used AE sensors, and (4) the receiving sensitivities of small aperture (1 mm diameter) sensors behave differently from larger sensors. SN - 1424-8220 UR - https://www.unboundmedicine.com/medline/citation/31315201/Rayleigh_Wave_Calibration_of_Acoustic_Emission_Sensors_and_Ultrasonic_Transducers L2 - http://www.mdpi.com/resolver?pii=s19143129 DB - PRIME DP - Unbound Medicine ER -
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