Transcript CH_Inaudi_Smartec

Structural sensors for use in
cryogenic environments
Daniele Inaudi, CTO
SMARTEC SA
 Part of Roctest Group / Nova Metrix
 World’s largest supplier of structural health
monitoring systems
 World’s largest supplier of fiber optic sensors
 Offices in Canada, US, Switzerland, UK, France
 Supply of sensing HW and SW components,
SHM systems and associated services
 Experience in sensing for cryogenic and
radiation environments: CERN, ITER,
instrumentation of superconductive magnets,
LNG tanks and pipelines, nuclear power
plants, nuclear waste disposal
Fiber optic Sensors: Why?
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Small size
Great variety in the measurable parameters
Distributed and Multiplexed topologies
Insensitive to external perturbations
Reliability in demanding environments
Long-distance remote monitoring
Compatible with data-transmission network
Fiber Optic Sensor Types
Point Sensor:
Quasi distributed (multiplexed):
Sensoptic (Fabry-Pérot)
MuST (FBG)
Long base:
SOFO
Distributed: DiTest / DiTemp
(Brillouin and Raman)
Distributed Sensing
Reading Unit
Temp. [°C]
T1
Distributed Sensor
1m
100m
T1
T2
20km
F
F
T2
Position [m]
1000m
e
Strain [me]
0m
e
Position [m]
ITER projects
 Qualification and production of fiberoptic sensors for the monitoring of
superconductive magnets:
 Strain
 Small displacement (contact)
 Large displacement (contact)
 Laser-distance-meters: contactless
displacement
 Point temperatures
 Distributed temperatures
Fabry – Perot FO sensor for ITER
FBG FO sensors for ITER
Qualification for cryogenic conditions
Strain and Displacement sensors welded on test support during test at
nytrogen temperature
Non-contact: Laser Distance Meter
Distributed T Testing
Thank you for your attention
Thank you for your attention
For more information
www.roctest-group.com
[email protected]