Quasi-distributed acoustic emission monitoring system
Abstract »Smart Fibres is developing a quasi-distributed acoustic emission monitoring system based on fiber Bragg gratings (FBGs). It offers very high sensitivity detection of acoustic noise at multiple points on a single optical fibre.
This provides a capability for detecting and locating cracks in composite structures or metallic welded structures. Other applications for the technology include flow monitoring, equipment condition monitoring and leak detection. Unlike alternative piezo or fibre-laser based measurement approaches, the sensors are simple to make and install, the system can be ATEX certified for explosive atmospheres and the equipment is suited to development for flight use. In this presentation, the sensing concept will be introduced and a live demonstration will be made of the prototype system’s ability to detect simulated acoustic emission events.
Biography: Jérôme GRELIN received his MSc (in 2004) and PhD (in 2007) degrees in optoelectronics from the Institut National Polytechnique (INPG) in Grenoble, France. His original research interests were about the development of glass integrated optic devices in the MIR bandwidth. He joined Smart Fibres Ltd in 2010 and had been working initially on the new generation of FBG interrogator instrument. Since 2015, he is now the the head of the engineering team and focusing on NPI and customer projects deliveries.