Pulse Peak Delay-Total Focusing Method for Ultrasonic Tomography on Concrete Structure
An ultrasonic array device like the A1040 MIRA is used to non-destructively visualize the inside of concrete structures. A data set acquired by the ultrasonic array device is so unfocused that an image reconstruction algorithm is required to transform the data set into an understandable image. The i...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-02-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/4/1741 |
| _version_ | 1797396427542888448 |
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| author | Hungjoo Kwon Changbin Joh Won Jong Chin |
| author_facet | Hungjoo Kwon Changbin Joh Won Jong Chin |
| author_sort | Hungjoo Kwon |
| collection | DOAJ |
| description | An ultrasonic array device like the A1040 MIRA is used to non-destructively visualize the inside of concrete structures. A data set acquired by the ultrasonic array device is so unfocused that an image reconstruction algorithm is required to transform the data set into an understandable image. The image reconstruction algorithm like total focusing method exploits the time-of-flight of an ultrasonic pulse when focusing the image. While a high frequency ultrasonic pulse barely affects the accuracy of results, a low frequency ultrasonic pulse with a long wavelength causes an overall sagging of the resulting image around half wavelength of the pulse, which results in a poor quality of results. In this research, a modified total focusing method called pulse peak delay-total focusing method is proposed to calibrate the sagging in the resulting images due to the long wavelength of the pulse. The simulation of an ultrasonic array signal is implemented to validate the proposed method. The experimental results are compared with the simulation results to validate the proposed method. The simulation using the proposed method shows good agreement with experimental results. Analysis of results using potential damage curve and array performance indicator shows that the proposed method allows the higher accuracy, as well as the increased resolution of resulting images. |
| first_indexed | 2024-03-09T00:50:09Z |
| format | Article |
| id | doaj.art-01493ffafe86478592249a12373b5950 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T00:50:09Z |
| publishDate | 2021-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-01493ffafe86478592249a12373b59502023-12-11T17:12:31ZengMDPI AGApplied Sciences2076-34172021-02-01114174110.3390/app11041741Pulse Peak Delay-Total Focusing Method for Ultrasonic Tomography on Concrete StructureHungjoo Kwon0Changbin Joh1Won Jong Chin2Korea Institute of Civil Engineering and Building Technology, Goyang, Gyeonggi 10223, KoreaKorea Institute of Civil Engineering and Building Technology, Goyang, Gyeonggi 10223, KoreaKorea Institute of Civil Engineering and Building Technology, Goyang, Gyeonggi 10223, KoreaAn ultrasonic array device like the A1040 MIRA is used to non-destructively visualize the inside of concrete structures. A data set acquired by the ultrasonic array device is so unfocused that an image reconstruction algorithm is required to transform the data set into an understandable image. The image reconstruction algorithm like total focusing method exploits the time-of-flight of an ultrasonic pulse when focusing the image. While a high frequency ultrasonic pulse barely affects the accuracy of results, a low frequency ultrasonic pulse with a long wavelength causes an overall sagging of the resulting image around half wavelength of the pulse, which results in a poor quality of results. In this research, a modified total focusing method called pulse peak delay-total focusing method is proposed to calibrate the sagging in the resulting images due to the long wavelength of the pulse. The simulation of an ultrasonic array signal is implemented to validate the proposed method. The experimental results are compared with the simulation results to validate the proposed method. The simulation using the proposed method shows good agreement with experimental results. Analysis of results using potential damage curve and array performance indicator shows that the proposed method allows the higher accuracy, as well as the increased resolution of resulting images.https://www.mdpi.com/2076-3417/11/4/1741ultrasonic arrayconcrete structurepulse peak delay-total focusing method |
| spellingShingle | Hungjoo Kwon Changbin Joh Won Jong Chin Pulse Peak Delay-Total Focusing Method for Ultrasonic Tomography on Concrete Structure Applied Sciences ultrasonic array concrete structure pulse peak delay-total focusing method |
| title | Pulse Peak Delay-Total Focusing Method for Ultrasonic Tomography on Concrete Structure |
| title_full | Pulse Peak Delay-Total Focusing Method for Ultrasonic Tomography on Concrete Structure |
| title_fullStr | Pulse Peak Delay-Total Focusing Method for Ultrasonic Tomography on Concrete Structure |
| title_full_unstemmed | Pulse Peak Delay-Total Focusing Method for Ultrasonic Tomography on Concrete Structure |
| title_short | Pulse Peak Delay-Total Focusing Method for Ultrasonic Tomography on Concrete Structure |
| title_sort | pulse peak delay total focusing method for ultrasonic tomography on concrete structure |
| topic | ultrasonic array concrete structure pulse peak delay-total focusing method |
| url | https://www.mdpi.com/2076-3417/11/4/1741 |
| work_keys_str_mv | AT hungjookwon pulsepeakdelaytotalfocusingmethodforultrasonictomographyonconcretestructure AT changbinjoh pulsepeakdelaytotalfocusingmethodforultrasonictomographyonconcretestructure AT wonjongchin pulsepeakdelaytotalfocusingmethodforultrasonictomographyonconcretestructure |