On-Line Corrosion Monitoring of Plate Structures Based on Guided Wave Tomography Using Piezoelectric Sensors
| Autor: | Mahadhir Hamzah Caffoor, Jing Rao, Zheng Fan, Danylo Lisevych, Madis Ratassepp |
|---|---|
| Přispěvatelé: | School of Mechanical and Aerospace Engineering |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Materials science
full waveform inversion Piezoelectric sensor Acoustics Guided Wave Tomography Corrosion monitoring 02 engineering and technology piezoelectric transducers lcsh:Chemical technology 01 natural sciences Biochemistry Article corrosion monitoring guided wave tomography Analytical Chemistry Corrosion Lamb waves Corrosion Monitoring 0103 physical sciences lcsh:TP1-1185 Electrical and Electronic Engineering 010301 acoustics Instrumentation Guided wave testing Reconstruction algorithm 021001 nanoscience & nanotechnology Atomic and Molecular Physics and Optics Transducer Tomography 0210 nano-technology |
| Zdroj: | Sensors; Volume 17; Issue 12; Pages: 2882 Sensors (Basel, Switzerland) Sensors, Vol 17, Iss 12, p 2882 (2017) |
| ISSN: | 1424-8220 |
| DOI: | 10.3390/s17122882 |
| Popis: | Corrosion is a major safety and economic concern to various industries. In this paper, a novel ultrasonic guided wave tomography (GWT) system based on self-designed piezoelectric sensors is presented for on-line corrosion monitoring of large plate-like structures. Accurate thickness reconstruction of corrosion damages is achieved by using the dispersive regimes of selected guided waves and a reconstruction algorithm based on full waveform inversion (FWI). The system makes use of an array of miniaturised piezoelectric transducers that are capable of exciting and receiving highly dispersive A0 Lamb wave mode at low frequencies. The scattering from transducer array has been found to have a small effect on the thickness reconstruction. The efficiency and the accuracy of the new system have been demonstrated through continuous forced corrosion experiments. The FWI reconstructed thicknesses show good agreement with analytical predictions obtained by Faraday’s law and laser measurements, and more importantly, the thickness images closely resemble the actual corrosion sites. NRF (Natl Research Foundation, S’pore) Published version |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|