Abstract
| Language | English |
|---|---|
| Pages | 313 - 222 |
| Number of pages | 10 |
| DOIs | |
| Publication status | Published - 13 May 2005 |
| Event | SPIE 15th Annual International Symposium on Smart Structures and Materials & Nondestructive Evaluation and Health Monitoring - Duration: 9 May 2005 → … |
Conference
| Conference | SPIE 15th Annual International Symposium on Smart Structures and Materials & Nondestructive Evaluation and Health Monitoring |
|---|---|
| Period | 9/05/05 → … |
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Keywords
- ultrasonic Lamb waves
- material damage detection
- polarimetric detection
- fibre bragg gratings
- ultrasound
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Novel methods of Lamb wave detection for material damage detection and location. / Thursby, G.J.; Sorazu, B.L.; Betz, D.; Culshaw, B.
2005. 313 - 222 Paper presented at SPIE 15th Annual International Symposium on Smart Structures and Materials & Nondestructive Evaluation and Health Monitoring, .Research output: Contribution to conference › Paper
TY - CONF
T1 - Novel methods of Lamb wave detection for material damage detection and location
AU - Thursby, G.J.
AU - Sorazu, B.L.
AU - Betz, D.
AU - Culshaw, B.
PY - 2005/5/13
Y1 - 2005/5/13
N2 - We describe and compare two novel methods of detecting ultrasonic Lamb waves used for damage detection and location, and then go on to compare their characteristics with those of more conventional PZT transducers. The two methods are measurements of the change in polarization state of the light in an optical fibre and the changes in reflected power from a fibre Bragg grating. Since different transducers measure different properties of Lamb waves by different methods, their relative sensitivities to the S0 and A0 modes can also vary. This can be of interest because, for instance, the A0 mode is more sensitive to the presence of delaminations in a sheet due to the larger shear strain component that this mode contains. We also describe the directional properties of the sensors and demonstrate the ways in which these can be used to advantage in the detection and location of damage.
AB - We describe and compare two novel methods of detecting ultrasonic Lamb waves used for damage detection and location, and then go on to compare their characteristics with those of more conventional PZT transducers. The two methods are measurements of the change in polarization state of the light in an optical fibre and the changes in reflected power from a fibre Bragg grating. Since different transducers measure different properties of Lamb waves by different methods, their relative sensitivities to the S0 and A0 modes can also vary. This can be of interest because, for instance, the A0 mode is more sensitive to the presence of delaminations in a sheet due to the larger shear strain component that this mode contains. We also describe the directional properties of the sensors and demonstrate the ways in which these can be used to advantage in the detection and location of damage.
KW - ultrasonic Lamb waves
KW - material damage detection
KW - polarimetric detection
KW - fibre bragg gratings
KW - ultrasound
U2 - 10.1117/12.600545
DO - 10.1117/12.600545
M3 - Paper
SP - 313
EP - 222
ER -