Non-Contact Shear Wave Generation and Detection Using High Frequency Air-Coupled Focused Transducer and Fiber Optic Based Sagnac Interferometer for Mechanical Characterization
In shear wave-based material mechanical characterization, the transmit/receiver transducer is generally in contact with the material through a coupling medium. In many applications, especially in biological tissue-related characterization, the application of the coupling medium and the contact metho...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-08-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/22/15/5824 |
| _version_ | 1827618277619138560 |
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| author | Gui Chen Jinjun Xia |
| author_facet | Gui Chen Jinjun Xia |
| author_sort | Gui Chen |
| collection | DOAJ |
| description | In shear wave-based material mechanical characterization, the transmit/receiver transducer is generally in contact with the material through a coupling medium. In many applications, especially in biological tissue-related characterization, the application of the coupling medium and the contact method are not ideal, sometimes even unacceptable, due to contamination or stress response concerns. To avoid contact, we developed a 1 MHz air-coupled focused PZT transducer as a moderate pressure generator that could induce a shear wave in soft material and a fiber optic-based Sagnac system for the detection of the propagating shear wave. A calibration indicated that the fabricated air-coupled focused PZT transducer could generate pressure above 1 KPa within its focal range. This pressure is three to five times as much as the pressure generated by a 1 MHz air-coupled transducer currently available on the market. The integrated system was demonstrated through shear wave generation by the fabricated air-coupled PZT transducer and shear wave detection by the fiber optic Sagnac system in a nylon membrane. The results demonstrated the capability of the integrated system in non-contact material mechanical characterization, such as in material modulus measurement. |
| first_indexed | 2024-03-09T10:04:19Z |
| format | Article |
| id | doaj.art-4cb83883578844ce83c65d1d0ac0ee7a |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T10:04:19Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-4cb83883578844ce83c65d1d0ac0ee7a2023-12-01T23:10:36ZengMDPI AGSensors1424-82202022-08-012215582410.3390/s22155824Non-Contact Shear Wave Generation and Detection Using High Frequency Air-Coupled Focused Transducer and Fiber Optic Based Sagnac Interferometer for Mechanical CharacterizationGui Chen0Jinjun Xia1Department of Electrical & Computer Engineering, Lawrence Technological University, Southfield, MI 48075, USADepartment of Electrical & Computer Engineering, Lawrence Technological University, Southfield, MI 48075, USAIn shear wave-based material mechanical characterization, the transmit/receiver transducer is generally in contact with the material through a coupling medium. In many applications, especially in biological tissue-related characterization, the application of the coupling medium and the contact method are not ideal, sometimes even unacceptable, due to contamination or stress response concerns. To avoid contact, we developed a 1 MHz air-coupled focused PZT transducer as a moderate pressure generator that could induce a shear wave in soft material and a fiber optic-based Sagnac system for the detection of the propagating shear wave. A calibration indicated that the fabricated air-coupled focused PZT transducer could generate pressure above 1 KPa within its focal range. This pressure is three to five times as much as the pressure generated by a 1 MHz air-coupled transducer currently available on the market. The integrated system was demonstrated through shear wave generation by the fabricated air-coupled PZT transducer and shear wave detection by the fiber optic Sagnac system in a nylon membrane. The results demonstrated the capability of the integrated system in non-contact material mechanical characterization, such as in material modulus measurement.https://www.mdpi.com/1424-8220/22/15/5824non-contact characterizationnon-contact modulus measurementair-coupled transducershear wave generationshear wave detectionsagnac system |
| spellingShingle | Gui Chen Jinjun Xia Non-Contact Shear Wave Generation and Detection Using High Frequency Air-Coupled Focused Transducer and Fiber Optic Based Sagnac Interferometer for Mechanical Characterization Sensors non-contact characterization non-contact modulus measurement air-coupled transducer shear wave generation shear wave detection sagnac system |
| title | Non-Contact Shear Wave Generation and Detection Using High Frequency Air-Coupled Focused Transducer and Fiber Optic Based Sagnac Interferometer for Mechanical Characterization |
| title_full | Non-Contact Shear Wave Generation and Detection Using High Frequency Air-Coupled Focused Transducer and Fiber Optic Based Sagnac Interferometer for Mechanical Characterization |
| title_fullStr | Non-Contact Shear Wave Generation and Detection Using High Frequency Air-Coupled Focused Transducer and Fiber Optic Based Sagnac Interferometer for Mechanical Characterization |
| title_full_unstemmed | Non-Contact Shear Wave Generation and Detection Using High Frequency Air-Coupled Focused Transducer and Fiber Optic Based Sagnac Interferometer for Mechanical Characterization |
| title_short | Non-Contact Shear Wave Generation and Detection Using High Frequency Air-Coupled Focused Transducer and Fiber Optic Based Sagnac Interferometer for Mechanical Characterization |
| title_sort | non contact shear wave generation and detection using high frequency air coupled focused transducer and fiber optic based sagnac interferometer for mechanical characterization |
| topic | non-contact characterization non-contact modulus measurement air-coupled transducer shear wave generation shear wave detection sagnac system |
| url | https://www.mdpi.com/1424-8220/22/15/5824 |
| work_keys_str_mv | AT guichen noncontactshearwavegenerationanddetectionusinghighfrequencyaircoupledfocusedtransducerandfiberopticbasedsagnacinterferometerformechanicalcharacterization AT jinjunxia noncontactshearwavegenerationanddetectionusinghighfrequencyaircoupledfocusedtransducerandfiberopticbasedsagnacinterferometerformechanicalcharacterization |