Compensation of a Second Harmonic Wave Included in an Incident Ultrasonic Wave for the Precise Measurement of the Acoustic Nonlinearity Parameter
The incident second harmonic wave is a problematic issue for the precise measurement of the acoustic nonlinearity parameter. This paper proposes a compensation method to remove the effect of the incident second harmonic component in the measurement of the absolute acoustic nonlinearity parameter usi...
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MDPI AG
2021-05-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/21/9/3203 |
| _version_ | 1797535201611481088 |
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| author | Dong-Gi Song Sungho Choi Taehyeon Kim Kyung-Young Jhang |
| author_facet | Dong-Gi Song Sungho Choi Taehyeon Kim Kyung-Young Jhang |
| author_sort | Dong-Gi Song |
| collection | DOAJ |
| description | The incident second harmonic wave is a problematic issue for the precise measurement of the acoustic nonlinearity parameter. This paper proposes a compensation method to remove the effect of the incident second harmonic component in the measurement of the absolute acoustic nonlinearity parameter using the calibration method. For this, the second harmonic component detected by the receiving transducer is considered as the sum of the component due to material nonlinearity and the component included in the incident signal and a numerical calculation model is developed as a function of the propagation distance. In the model, the factors related to the material nonlinear parameter and the magnitude of the incident second harmonic component are unknown and these are determined by finding a value that best matches the experimental data according to the change in the propagation distance; compensation for the incident second harmonic component is then achieved. The case where the phase of the second harmonic wave due to material nonlinearity is opposite to that of the fundamental wave is also considered. To verify the validity of the proposed method, fused silica and aluminum alloy Al6061-T6 specimens with different thicknesses corresponding to the propagation distance are tested. The experimental results show that the nonlinear parameters changed significantly according to the propagation distance before compensation but were very stable after compensation. Additionally, the average values of the nonlinear parameter are 11.04 in the fused silica, which is within the literature value range (10.1 to 12.4), and that for the Al6061-T6 is 6.59, which is close to the literature value range (4.5 to 6.12). |
| first_indexed | 2024-03-10T11:41:10Z |
| format | Article |
| id | doaj.art-285a918c1e234ed7975fc1d3092fa9d1 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T11:41:10Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-285a918c1e234ed7975fc1d3092fa9d12023-11-21T18:26:17ZengMDPI AGSensors1424-82202021-05-01219320310.3390/s21093203Compensation of a Second Harmonic Wave Included in an Incident Ultrasonic Wave for the Precise Measurement of the Acoustic Nonlinearity ParameterDong-Gi Song0Sungho Choi1Taehyeon Kim2Kyung-Young Jhang3Department of Mechanical Convergence Engineering, Hanyang University, Seoul 04763, KoreaLANL-JBNU Engineering Institute-Korea, Jeonbuk National University, Jeollabuk-do 54896, KoreaRadiation and Decommissioning Laboratory, KHNP-CRI, Daejeon 34101, KoreaSchool of Mechanical Engineering, Hanyang University, Seoul 04763, KoreaThe incident second harmonic wave is a problematic issue for the precise measurement of the acoustic nonlinearity parameter. This paper proposes a compensation method to remove the effect of the incident second harmonic component in the measurement of the absolute acoustic nonlinearity parameter using the calibration method. For this, the second harmonic component detected by the receiving transducer is considered as the sum of the component due to material nonlinearity and the component included in the incident signal and a numerical calculation model is developed as a function of the propagation distance. In the model, the factors related to the material nonlinear parameter and the magnitude of the incident second harmonic component are unknown and these are determined by finding a value that best matches the experimental data according to the change in the propagation distance; compensation for the incident second harmonic component is then achieved. The case where the phase of the second harmonic wave due to material nonlinearity is opposite to that of the fundamental wave is also considered. To verify the validity of the proposed method, fused silica and aluminum alloy Al6061-T6 specimens with different thicknesses corresponding to the propagation distance are tested. The experimental results show that the nonlinear parameters changed significantly according to the propagation distance before compensation but were very stable after compensation. Additionally, the average values of the nonlinear parameter are 11.04 in the fused silica, which is within the literature value range (10.1 to 12.4), and that for the Al6061-T6 is 6.59, which is close to the literature value range (4.5 to 6.12).https://www.mdpi.com/1424-8220/21/9/3203absolute acoustic nonlinearity parameternonlinear ultrasonic techniqueincident second harmonic wave |
| spellingShingle | Dong-Gi Song Sungho Choi Taehyeon Kim Kyung-Young Jhang Compensation of a Second Harmonic Wave Included in an Incident Ultrasonic Wave for the Precise Measurement of the Acoustic Nonlinearity Parameter Sensors absolute acoustic nonlinearity parameter nonlinear ultrasonic technique incident second harmonic wave |
| title | Compensation of a Second Harmonic Wave Included in an Incident Ultrasonic Wave for the Precise Measurement of the Acoustic Nonlinearity Parameter |
| title_full | Compensation of a Second Harmonic Wave Included in an Incident Ultrasonic Wave for the Precise Measurement of the Acoustic Nonlinearity Parameter |
| title_fullStr | Compensation of a Second Harmonic Wave Included in an Incident Ultrasonic Wave for the Precise Measurement of the Acoustic Nonlinearity Parameter |
| title_full_unstemmed | Compensation of a Second Harmonic Wave Included in an Incident Ultrasonic Wave for the Precise Measurement of the Acoustic Nonlinearity Parameter |
| title_short | Compensation of a Second Harmonic Wave Included in an Incident Ultrasonic Wave for the Precise Measurement of the Acoustic Nonlinearity Parameter |
| title_sort | compensation of a second harmonic wave included in an incident ultrasonic wave for the precise measurement of the acoustic nonlinearity parameter |
| topic | absolute acoustic nonlinearity parameter nonlinear ultrasonic technique incident second harmonic wave |
| url | https://www.mdpi.com/1424-8220/21/9/3203 |
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