Comparison of vibration measurements of elastic and mechanically lossy (visco-elastic) materials, using fibre grating sensors

John P. Dakin; Wolfgang Ecke; Matthias Reuter

doi:10.1117/12.640221

23 May 2005 Comparison of vibration measurements of elastic and mechanically lossy (visco-elastic) materials, using fibre grating sensors

John P. Dakin, Wolfgang Ecke, Matthias Reuter

Author Affiliations +

Proceedings Volume 5855, 17th International Conference on Optical Fibre Sensors; (2005) https://doi.org/10.1117/12.640221
Event: 17th International Conference on Optical Fibre Sensors, 2005, Bruges, Belgium

Abstract

The paper compares results when measuring oscillatory strain in elastic (Al alloy) and visco-elastic materials using infibre Bragg gratings. These show the effects of self-heating in the latter, when mechanical losses arise, and also show the effects of materials creeping at high strain levels. Results are also taken for highly-elastic metallic substrate materials when a visco-elastic damping medium is in close contact. The results show that care must be taken, not only when monitoring fast oscillatory perturbations in visco-elastic materials, but also when choosing fibre bonding cements or protective coatings for use with fibre gratings.

Citation Download Citation

John P. Dakin, Wolfgang Ecke, and Matthias Reuter "Comparison of vibration measurements of elastic and mechanically lossy (visco-elastic) materials, using fibre grating sensors", Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); https://doi.org/10.1117/12.640221

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