Chew, D;
Fromme, P;
(2014)
Monitoring of corrosion damage using high-frequency guided ultrasonic waves.
In:
Proceedings of SPIE.
Society of Photo-optical Instrumentation Engineers
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Abstract
Due to adverse environmental conditions corrosion can develop during the life cycle of industrial structures, e.g., offshore oil platforms, ships, and desalination plants. Both pitting corrosion and generalized corrosion leading to wall thickness loss can cause the degradation of the integrity and load bearing capacity of the structure. Structural health monitoring of corrosion damage in difficult to access areas can in principle be achieved using high frequency guided waves propagating along the structure from accessible areas. Using standard ultrasonic transducers with single sided access to the structure, high frequency guided wave modes were generated that penetrate through the complete thickness of the structure. Wall thickness reduction was induced using accelerated corrosion in a salt water bath. The corrosion damage was monitored based on the effect on the wave propagation and interference of the different modes. The change in the wave interference was quantified based on an analysis in the frequency domain (Fourier transform) and was found to match well with theoretical predictions for the wall thickness loss. High frequency guided waves have the potential for corrosion damage monitoring at critical and difficult to access locations from a stand-off distance. © 2014 SPIE.
| Type: | Proceedings paper |
|---|---|
| Title: | Monitoring of corrosion damage using high-frequency guided ultrasonic waves |
| Event: | Health Monitoring of Structural and Biological Systems 2014 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1117/12.2046301 |
| Publisher version: | http://dx.doi.org/10.1117/12.2046301 |
| Language: | English |
| Additional information: | Copyright 2014 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1433719 |
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