ISSN:
1662-8985
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Fibre Bragg Gratings (FBGs) are optical strain gages manufactured directly inside the fiber core.They provide several advantages with respect to conventional strain gages. In particular it ispossible to put several FBGs along the same fibre (multiplexing), they are immune to corrosiveenvironments and to electromagnetic interferences. They can be embedded in almost all types ofmaterials and are very useful in Structural Health Monitoring.An innovative approach for testing specimens in this area is reported in this work. An aluminiumalloy 2024-T3 CT specimen has been manufactured with one small feed-through hole and asuperficial groove. Two FBG sensors, multiplexed on the same fibre, have been glued one insidethe hole and one inside the groove. Fatigue test has been carried out monitoring the crack lengthboth with standard measure system and with the FBG strain sensors placed in front of the crack tip
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.38.155.pdf
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