Description
By combining the Bragg Grating Fibre principle with the latest in embedded laser and DSP technology EM Motorsport has developed a compact and robust sensor system that can offer new levels in understanding the behaviour of structures under load.
Using a specially prepared single fibre the Sensor System is able to sense nano changes in the dimensions of the structure that it is bonded to or embedded in. These changes are measured by a miniature laser inside the compact interrogation unit that is connected at one end of the fibre and are communicated to other logging or control system via a CAN interface.
There can be as many as 70 measurement points (gratings) in a single 0.24 mm diameter fibre and they can be positioned as close as 1 micrometre apart or spread out in a single fibre up to 100 metres long.
Unlike conventional strain gauges the fibre system is not susceptible to RF interference and can easily be included in carbon fibre structures during the lay-up process or can be retro fitted by bonding to the outside of parts such as steel components making it ideal for use in the laboratory environment or wind tunnel.
Main features
- Single fibre, multiple measurement points
- Fibre can be embedded in carbon fibre structures
- Fibre can be bonded to existing parts
- Wide range of measurement points and fibre lengths
- Up to 2 KHz measurement frequency
- Up to 70 sensors points (gratings) per fibre
- Resistant to harsh environments
- Robust and reliable (service life measured in years)
- Wide dynamic measurement range
- Fibre immune to RF interference and water ingress
- Resistant to heat
- Fibre can be left unconnected for periodic use (e.g. checking of structure at service interval or part of NDT)
- Economical (fibre price compares to single amplified strain gauge)