Title :
FONI-SPATE: A new fibre optic stress/strain sensor, using a near-infrared variant of the SPATE effect
Author :
Dakin, J.P. ; Cruz, Jose L. ; Sinclair, I.
Author_Institution :
Opt. Fibre Group, Southampton Univ.
fDate :
9/15/1994 12:00:00 AM
Abstract :
A new fibre optic stress/strain sensor, for monitoring hot materials is reported. The fibre collects grey body emission from a heated material sample. When the sample is subjected to transient stresses, the radiation is modulated due to the adiabatic changes in its temperature. The modulation is monitored, via a silica fibre, using a near-infrared GaInAs photodetector. This is also believed to be the first demonstration of the SPATE method in the near infrared
Keywords :
fibre optic sensors; infrared detectors; strain measurement; stress analysis; stress measurement; FONI-SPATE; GaInAs; SiO2; adiabatic temperature changes; fibre optic stress/strain sensor; grey body emission; hot materials; monitoring; near-infrared GaInAs photodetector; radiation modulation; silica fibre; transient stresses;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19941101
