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Proceedings Paper

Comparison of vibration measurements of elastic and mechanically lossy (visco-elastic) materials, using fibre grating sensors
Author(s): John P. Dakin; Wolfgang Ecke; Matthias Reuter
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Paper 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.

Paper Details

Date Published: 23 May 2005
PDF: 4 pages
Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); doi: 10.1117/12.640221
Show Author Affiliations
John P. Dakin, Univ. of Southampton (United Kingdom)
Wolfgang Ecke, Institut fur Physikalische Hochtechnologie Jena (Germany)
Matthias Reuter, Institut fur Physikalische Hochtechnologie Jena (Germany)


Published in SPIE Proceedings Vol. 5855:
17th International Conference on Optical Fibre Sensors
Marc Voet; Reinhardt Willsch; Wolfgang Ecke; Julian Jones; Brian Culshaw, Editor(s)

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