Abstract
For many of their intended applications, guided wave structural health monitoring systems are expected to be able to perform well over periods of many years. The results from a system attached to a steel water tank for over 3 years are analysed. From measuring individual parameters of the collected signals including the first arrival time, maximum amplitude, centre frequency and bandwidth, it appeared that no notable long term changes were occurring. When baseline subtraction based data processing algorithms were applied to the dataset, the value of the post subtraction residual increased to values where only gross damage would be detected over a period of weeks. This means that changes, not highlighted by the measured parameters, are occurring over relatively short time scales which would prevent the successful operation of such a system. This demonstrates the need for the long term performance of guided wave structural health monitoring systems to be investigated further.
| Original language | English |
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| Title of host publication | 54th Annual Conference of the British Institute of Non-Destructive Testing (NDT 2015) |
| Subtitle of host publication | Proceedings of a meeting held 8-10 September 2015, Telford, UK |
| Publisher | British Institute of Non-Destructive Testing |
| Pages | 33-44 |
| Number of pages | 12 |
| ISBN (Print) | 9781510813236 |
| Publication status | Published - 1 May 2016 |
| Event | 54th Annual British Conference of Non-Destructive Testing, NDT 2015 - Telford, United Kingdom Duration: 8 Sep 2015 → 10 Sep 2015 |
Conference
| Conference | 54th Annual British Conference of Non-Destructive Testing, NDT 2015 |
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| Country/Territory | United Kingdom |
| City | Telford |
| Period | 8/09/15 → 10/09/15 |
Keywords
- Structural Health Monitoring
- Guided Waves
- Long term performance