Application of Fresnel Zone Plate Focused Beam to Optimized Sensor Design for Pulse-Echo Harmonic Generation Measurements
In nonlinear acoustic measurements involving reflection from the stress-free boundary, the pulse-echo method could not be used because such a boundary is known to destructively change the second harmonic generation (SHG) process. The use of a focusing acoustic beam, however, can improve SHG after re...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-03-01
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| Series: | Sensors |
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| Online Access: | http://www.mdpi.com/1424-8220/19/6/1373 |
| _version_ | 1817991850048356352 |
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| author | Hyunjo Jeong Hyojeong Shin Shuzeng Zhang Xiongbing Li Sungjong Cho |
| author_facet | Hyunjo Jeong Hyojeong Shin Shuzeng Zhang Xiongbing Li Sungjong Cho |
| author_sort | Hyunjo Jeong |
| collection | DOAJ |
| description | In nonlinear acoustic measurements involving reflection from the stress-free boundary, the pulse-echo method could not be used because such a boundary is known to destructively change the second harmonic generation (SHG) process. The use of a focusing acoustic beam, however, can improve SHG after reflection from the specimen boundary, and nonlinear pulse-echo methods can be implemented as a practical means of measuring the acoustic nonlinear parameter (β) of solid specimens. This paper investigates the optimal sensor design for pulse-echo SHG and β measurements using Fresnel zone plate (FZP) focused beams. The conceptual design of a sensor configuration uses separate transmission and reception, where a broadband receiver is located at the center and a four-element FZP transmitter is positioned outside the receiver to create a focused beam at the specified position in a solid sample. Comprehensive simulations are performed for focused beam fields analysis and to determine the optimal sensor design using various combinations of focal length, receiver size and frequency. It is shown that the optimally designed sensors for 1 cm thick aluminum can produce the second harmonic amplitude and the uncorrected nonlinear parameter corresponding to the through-transmission method. The sensitivity of the optimal sensors to the changes in the designed sound velocity is analyzed and compared between the odd- and even-type FZPs. |
| first_indexed | 2024-04-14T01:18:02Z |
| format | Article |
| id | doaj.art-6d38f8e1e106491cb12e74788e38d15e |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-14T01:18:02Z |
| publishDate | 2019-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-6d38f8e1e106491cb12e74788e38d15e2022-12-22T02:20:46ZengMDPI AGSensors1424-82202019-03-01196137310.3390/s19061373s19061373Application of Fresnel Zone Plate Focused Beam to Optimized Sensor Design for Pulse-Echo Harmonic Generation MeasurementsHyunjo Jeong0Hyojeong Shin1Shuzeng Zhang2Xiongbing Li3Sungjong Cho4Department of Mechanical Engineering, Wonkwang University, Iksan, Jeonbuk 54538, KoreaDepartment of Mechanical Engineering, Wonkwang University, Iksan, Jeonbuk 54538, KoreaSchool of Traffic and Transportation Engineering, Central South University, Changsha 410075, ChinaSchool of Traffic and Transportation Engineering, Central South University, Changsha 410075, ChinaDepartment of Mechanical Engineering, Wonkwang University, Iksan, Jeonbuk 54538, KoreaIn nonlinear acoustic measurements involving reflection from the stress-free boundary, the pulse-echo method could not be used because such a boundary is known to destructively change the second harmonic generation (SHG) process. The use of a focusing acoustic beam, however, can improve SHG after reflection from the specimen boundary, and nonlinear pulse-echo methods can be implemented as a practical means of measuring the acoustic nonlinear parameter (β) of solid specimens. This paper investigates the optimal sensor design for pulse-echo SHG and β measurements using Fresnel zone plate (FZP) focused beams. The conceptual design of a sensor configuration uses separate transmission and reception, where a broadband receiver is located at the center and a four-element FZP transmitter is positioned outside the receiver to create a focused beam at the specified position in a solid sample. Comprehensive simulations are performed for focused beam fields analysis and to determine the optimal sensor design using various combinations of focal length, receiver size and frequency. It is shown that the optimally designed sensors for 1 cm thick aluminum can produce the second harmonic amplitude and the uncorrected nonlinear parameter corresponding to the through-transmission method. The sensitivity of the optimal sensors to the changes in the designed sound velocity is analyzed and compared between the odd- and even-type FZPs.http://www.mdpi.com/1424-8220/19/6/1373focused beamsecond harmonic generation (SHG)nonlinear parameterFresnel zone plate (FZP)pulse-echo method |
| spellingShingle | Hyunjo Jeong Hyojeong Shin Shuzeng Zhang Xiongbing Li Sungjong Cho Application of Fresnel Zone Plate Focused Beam to Optimized Sensor Design for Pulse-Echo Harmonic Generation Measurements Sensors focused beam second harmonic generation (SHG) nonlinear parameter Fresnel zone plate (FZP) pulse-echo method |
| title | Application of Fresnel Zone Plate Focused Beam to Optimized Sensor Design for Pulse-Echo Harmonic Generation Measurements |
| title_full | Application of Fresnel Zone Plate Focused Beam to Optimized Sensor Design for Pulse-Echo Harmonic Generation Measurements |
| title_fullStr | Application of Fresnel Zone Plate Focused Beam to Optimized Sensor Design for Pulse-Echo Harmonic Generation Measurements |
| title_full_unstemmed | Application of Fresnel Zone Plate Focused Beam to Optimized Sensor Design for Pulse-Echo Harmonic Generation Measurements |
| title_short | Application of Fresnel Zone Plate Focused Beam to Optimized Sensor Design for Pulse-Echo Harmonic Generation Measurements |
| title_sort | application of fresnel zone plate focused beam to optimized sensor design for pulse echo harmonic generation measurements |
| topic | focused beam second harmonic generation (SHG) nonlinear parameter Fresnel zone plate (FZP) pulse-echo method |
| url | http://www.mdpi.com/1424-8220/19/6/1373 |
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