Numerical Investigation of Excitation of Various Lamb Waves Modes in Thin Plastic Films
Ultrasonic-guided waves are widely used for the non-destructive testing and material characterization of plates and thin films. In the case of thin plastic polyvinyl chloride (PVC), films up to 3.2 MHz with only two Lamb wave modes, antisymmetrical A<sub>0</sub> and symmetrical S<sub&...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-01-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/2/849 |
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| author | Rymantas Jonas Kazys Justina Sestoke Egidijus Zukauskas |
| author_facet | Rymantas Jonas Kazys Justina Sestoke Egidijus Zukauskas |
| author_sort | Rymantas Jonas Kazys |
| collection | DOAJ |
| description | Ultrasonic-guided waves are widely used for the non-destructive testing and material characterization of plates and thin films. In the case of thin plastic polyvinyl chloride (PVC), films up to 3.2 MHz with only two Lamb wave modes, antisymmetrical A<sub>0</sub> and symmetrical S<sub>0</sub>, may propagate. At frequencies lower that 240 kHz, the velocity of the A<sub>0</sub> mode becomes slower than the ultrasonic velocity in air which makes excitation and reception of such mode complicated. For excitation of both modes, we propose instead a single air-coupled ultrasonic transducer to use linear air-coupled arrays, which can be electronically readjusted to optimally excite and receive the A<sub>0</sub> and S<sub>0</sub> guided wave modes. The objective of this article was the numerical investigation of feasibility to excite different types of ultrasonic-guided waves, such as S<sub>0</sub> and A<sub>0</sub> modes in thin plastic films with the same electronically readjusted linear phased array. Three-dimensional and two-dimensional simulations of A<sub>0</sub> and S<sub>0</sub> Lamb wave modes using a single ultrasonic transducer and a linear phased array were performed. The obtained results clearly demonstrate feasibility to excite efficiently different guided wave modes in thin plastic films with readjusted phased array. |
| first_indexed | 2024-03-10T01:57:45Z |
| format | Article |
| id | doaj.art-4fd59ba6291c4232a9a858e65ba28350 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T01:57:45Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-4fd59ba6291c4232a9a858e65ba283502023-11-23T12:53:53ZengMDPI AGApplied Sciences2076-34172022-01-0112284910.3390/app12020849Numerical Investigation of Excitation of Various Lamb Waves Modes in Thin Plastic FilmsRymantas Jonas Kazys0Justina Sestoke1Egidijus Zukauskas2Prof. K. Barsauskas Ultrasound Research Institute, Kaunas University of Technology, 51423 Kaunas, LithuaniaProf. K. Barsauskas Ultrasound Research Institute, Kaunas University of Technology, 51423 Kaunas, LithuaniaProf. K. Barsauskas Ultrasound Research Institute, Kaunas University of Technology, 51423 Kaunas, LithuaniaUltrasonic-guided waves are widely used for the non-destructive testing and material characterization of plates and thin films. In the case of thin plastic polyvinyl chloride (PVC), films up to 3.2 MHz with only two Lamb wave modes, antisymmetrical A<sub>0</sub> and symmetrical S<sub>0</sub>, may propagate. At frequencies lower that 240 kHz, the velocity of the A<sub>0</sub> mode becomes slower than the ultrasonic velocity in air which makes excitation and reception of such mode complicated. For excitation of both modes, we propose instead a single air-coupled ultrasonic transducer to use linear air-coupled arrays, which can be electronically readjusted to optimally excite and receive the A<sub>0</sub> and S<sub>0</sub> guided wave modes. The objective of this article was the numerical investigation of feasibility to excite different types of ultrasonic-guided waves, such as S<sub>0</sub> and A<sub>0</sub> modes in thin plastic films with the same electronically readjusted linear phased array. Three-dimensional and two-dimensional simulations of A<sub>0</sub> and S<sub>0</sub> Lamb wave modes using a single ultrasonic transducer and a linear phased array were performed. The obtained results clearly demonstrate feasibility to excite efficiently different guided wave modes in thin plastic films with readjusted phased array.https://www.mdpi.com/2076-3417/12/2/849air-coupled ultrasonicLamb wavesfinite element modelingplastic films |
| spellingShingle | Rymantas Jonas Kazys Justina Sestoke Egidijus Zukauskas Numerical Investigation of Excitation of Various Lamb Waves Modes in Thin Plastic Films Applied Sciences air-coupled ultrasonic Lamb waves finite element modeling plastic films |
| title | Numerical Investigation of Excitation of Various Lamb Waves Modes in Thin Plastic Films |
| title_full | Numerical Investigation of Excitation of Various Lamb Waves Modes in Thin Plastic Films |
| title_fullStr | Numerical Investigation of Excitation of Various Lamb Waves Modes in Thin Plastic Films |
| title_full_unstemmed | Numerical Investigation of Excitation of Various Lamb Waves Modes in Thin Plastic Films |
| title_short | Numerical Investigation of Excitation of Various Lamb Waves Modes in Thin Plastic Films |
| title_sort | numerical investigation of excitation of various lamb waves modes in thin plastic films |
| topic | air-coupled ultrasonic Lamb waves finite element modeling plastic films |
| url | https://www.mdpi.com/2076-3417/12/2/849 |
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