Evaluation of the internal strains and stresses produced in a plate by propagating Lamb waves through the use of fibre optic sensors

G. Thursby, B. Culshaw

Research output: Contribution to journalConference Contribution

2 Citations (Scopus)

Abstract

Ultrasonic Lamb waves can be detected by various optical sensors, including polarimetric and FBG fibre sensors embedded within a sample plate. The difference between the responses of two types of optical fibre sensors, both positioned at different depths within a carbon fibre composite plate, to the first symmetric (S0) and antisymmetric (A0) Lamb waves are described. These responses illustrate the differences in internal strains and pressures characteristic of the two modes and may be used to identify phenomena such as mode conversion that might be caused by either structural features or damage within the material.
Original languageEnglish
Article number79820B
JournalProceedings of SPIE 7982, Smart Sensor Phenomena, Technology, Networks, and Systems 2011
Volume7982
DOIs
Publication statusPublished - 2011

Fingerprint

Lamb Waves
Fiber Optic Sensor
Lamb waves
Fiber optic sensors
Surface waves
fiber optics
FBG Sensor
Internal
Fiber Sensor
Ultrasonic Wave
Optical Fiber Sensor
Composite Plates
Carbon Fiber
Optical Sensor
evaluation
fiber composites
sensors
Ultrasonic waves
Optical sensors
Evaluation

Keywords

  • Lamb waves
  • fibre optic sensors

Cite this

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abstract = "Ultrasonic Lamb waves can be detected by various optical sensors, including polarimetric and FBG fibre sensors embedded within a sample plate. The difference between the responses of two types of optical fibre sensors, both positioned at different depths within a carbon fibre composite plate, to the first symmetric (S0) and antisymmetric (A0) Lamb waves are described. These responses illustrate the differences in internal strains and pressures characteristic of the two modes and may be used to identify phenomena such as mode conversion that might be caused by either structural features or damage within the material.",
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AB - Ultrasonic Lamb waves can be detected by various optical sensors, including polarimetric and FBG fibre sensors embedded within a sample plate. The difference between the responses of two types of optical fibre sensors, both positioned at different depths within a carbon fibre composite plate, to the first symmetric (S0) and antisymmetric (A0) Lamb waves are described. These responses illustrate the differences in internal strains and pressures characteristic of the two modes and may be used to identify phenomena such as mode conversion that might be caused by either structural features or damage within the material.

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