Fast four-channel fibre-optic displacement sensor for measuring impact waves at low cost
2006 (English)In: Measurement science and technology, ISSN 0957-0233, E-ISSN 1361-6501, Vol. 17, no 5, 1162-1166 p.Article in journal (Refereed) Published
We have developed a fast four-channel fibre-optic sensor for measuring dynamic surface displacements caused by shock waves. Light from an LED emitter is sent through a plastic fibre and reflected from the surface back into the fibre. The intensity of the reflected light gives the distance to the surface unambigously. Based on simple principles and utilizing inexpensive components, micrometre and microsecond resolution is achieved at lower cost and with easier usage than for interferometric methods and with better reliability than an accelerometer. The sensor is comparatively easy to set up. It is battery operated for reduced sensitivity to electromagnetic interference. The design of the fibre probe facilitates access in narrow and hostile environments.
Place, publisher, year, edition, pages
2006. Vol. 17, no 5, 1162-1166 p.
Cost, Displacement, Distance, Fibre-optic, Impact waves, Intensity, Plastic fibre
Production Engineering, Human Work Science and Ergonomics
IdentifiersURN: urn:nbn:se:kth:diva-8965DOI: 10.1088/0957-0233/17/5/S38ISI: 000238310400039ScopusID: 2-s2.0-33646200100OAI: oai:DiVA.org:kth-8965DiVA: diva2:14474
QC 20100914. Conference: 17th International Conference on Optical Fibre Sensors. Brugge, BELGIUM. MAY 23-27, 2005. 2005-12-272005-12-272011-10-04Bibliographically approved