3D-Printable Piezoelectric Composite Sensors for Acoustically Adapted Guided Ultrasonic Wave Detection
Commercially available photopolymer resins can be combined with lead zirconate titanate (PZT) micrometer size piezoelectric particles to form 3D-printable suspensions that solidify under UV light. This in turn makes it possible to realize various non-standard sensor geometries which might bring bene...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-09-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/22/18/6964 |
| _version_ | 1797482569080504320 |
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| author | Thomas Roloff Rytis Mitkus Jann Niklas Lion Michael Sinapius |
| author_facet | Thomas Roloff Rytis Mitkus Jann Niklas Lion Michael Sinapius |
| author_sort | Thomas Roloff |
| collection | DOAJ |
| description | Commercially available photopolymer resins can be combined with lead zirconate titanate (PZT) micrometer size piezoelectric particles to form 3D-printable suspensions that solidify under UV light. This in turn makes it possible to realize various non-standard sensor geometries which might bring benefits, such as increased piezoelectric output in specific conditions and less interference with incoming waves due to better acoustical adaptation compared to solid PZT ceramics. However, it is unclear whether piezoelectric composite materials are suitable for guided ultrasonic wave (GUW) detection, which is crucial for structural health monitoring (SHM) in different applications. In this study, thin piezoelectric composite sensors are tape casted, solidified under UV light, covered with electrodes, polarized in a high electric field and adhesively bonded onto an isotropic aluminum waveguide. This approach helps to demonstrate the capabilities of tape casting’s freedom to manufacture geometrically differently shaped, thin piezoelectric composite sensors for GUW detection. In an experimental study, thin two-dimensional piezoelectric composite sensors demonstrate successful detection of GUW for frequency-thickness products of up to 0.5 MHz mm. An analytical calculation of the maximum and minimum amplitudes for the ratio of the wavelength and the sensor length in wave propagation direction shows good agreement with the sensor-recorded signals. The output of the piezoelectric composite sensors and occurring reflections as measure for wave interactions are compared to commercial piezoelectric discs to evaluate their performance. |
| first_indexed | 2024-03-09T22:34:17Z |
| format | Article |
| id | doaj.art-e26cd2babc604c1086ccf1ed88ea5878 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T22:34:17Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-e26cd2babc604c1086ccf1ed88ea58782023-11-23T18:52:11ZengMDPI AGSensors1424-82202022-09-012218696410.3390/s221869643D-Printable Piezoelectric Composite Sensors for Acoustically Adapted Guided Ultrasonic Wave DetectionThomas Roloff0Rytis Mitkus1Jann Niklas Lion2Michael Sinapius3Institute of Mechanics and Adaptronics, Technische Universität Braunschweig, 38106 Braunschweig, GermanyInstitute of Mechanics and Adaptronics, Technische Universität Braunschweig, 38106 Braunschweig, GermanyInstitute of Mechanics and Adaptronics, Technische Universität Braunschweig, 38106 Braunschweig, GermanyInstitute of Mechanics and Adaptronics, Technische Universität Braunschweig, 38106 Braunschweig, GermanyCommercially available photopolymer resins can be combined with lead zirconate titanate (PZT) micrometer size piezoelectric particles to form 3D-printable suspensions that solidify under UV light. This in turn makes it possible to realize various non-standard sensor geometries which might bring benefits, such as increased piezoelectric output in specific conditions and less interference with incoming waves due to better acoustical adaptation compared to solid PZT ceramics. However, it is unclear whether piezoelectric composite materials are suitable for guided ultrasonic wave (GUW) detection, which is crucial for structural health monitoring (SHM) in different applications. In this study, thin piezoelectric composite sensors are tape casted, solidified under UV light, covered with electrodes, polarized in a high electric field and adhesively bonded onto an isotropic aluminum waveguide. This approach helps to demonstrate the capabilities of tape casting’s freedom to manufacture geometrically differently shaped, thin piezoelectric composite sensors for GUW detection. In an experimental study, thin two-dimensional piezoelectric composite sensors demonstrate successful detection of GUW for frequency-thickness products of up to 0.5 MHz mm. An analytical calculation of the maximum and minimum amplitudes for the ratio of the wavelength and the sensor length in wave propagation direction shows good agreement with the sensor-recorded signals. The output of the piezoelectric composite sensors and occurring reflections as measure for wave interactions are compared to commercial piezoelectric discs to evaluate their performance.https://www.mdpi.com/1424-8220/22/18/6964piezocomposite sensorstructural health monitoringguided ultrasonic wavessensor geometryreflection analysisacoustic impedance matching |
| spellingShingle | Thomas Roloff Rytis Mitkus Jann Niklas Lion Michael Sinapius 3D-Printable Piezoelectric Composite Sensors for Acoustically Adapted Guided Ultrasonic Wave Detection Sensors piezocomposite sensor structural health monitoring guided ultrasonic waves sensor geometry reflection analysis acoustic impedance matching |
| title | 3D-Printable Piezoelectric Composite Sensors for Acoustically Adapted Guided Ultrasonic Wave Detection |
| title_full | 3D-Printable Piezoelectric Composite Sensors for Acoustically Adapted Guided Ultrasonic Wave Detection |
| title_fullStr | 3D-Printable Piezoelectric Composite Sensors for Acoustically Adapted Guided Ultrasonic Wave Detection |
| title_full_unstemmed | 3D-Printable Piezoelectric Composite Sensors for Acoustically Adapted Guided Ultrasonic Wave Detection |
| title_short | 3D-Printable Piezoelectric Composite Sensors for Acoustically Adapted Guided Ultrasonic Wave Detection |
| title_sort | 3d printable piezoelectric composite sensors for acoustically adapted guided ultrasonic wave detection |
| topic | piezocomposite sensor structural health monitoring guided ultrasonic waves sensor geometry reflection analysis acoustic impedance matching |
| url | https://www.mdpi.com/1424-8220/22/18/6964 |
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