The most interesting metallic materials for high temperature applications are Nickel base superalloys and intermetallics. The possibility for implementing "health monitoring"for devices made of such materials represents a very attractive challenge. Such devices, operating up to temperatures of about 1000 °C include turbine blades both statorand rotor blades, jet engine components, hypersonic aircraft structural parts etc.. An embedded optical fiber should constitute a sensing element for systems which are able to detect possible damages. In this preliminary work a casting technique for embedding sapphire fibers into a Ni alloy and several methods to assure the fiber survival during the embedding process have been tested. Analyses ofthe fiber/matrix interface and light-transmission testshave been performed on the embedded fibers with promising results.
SPECIAL OPTICAL FIBRES EMBEDDED IN NI SUPERALLOY DEVICES AS MONITORING SYSTEMS / Felli, Ferdinando; Pilone, Daniela; Scicutelli, A.; Lupi, Carla; Ippoliti, L.. - STAMPA. - (2004), pp. 298-302. (Intervento presentato al convegno INTERNATIONAL SYMPOSIUM ON ADVANCES AND TRENDS IN FIBER OPTICS AND APPLICATIONS tenutosi a CHONGQING, CHINA nel OCTOBER 11-15, 2004).
SPECIAL OPTICAL FIBRES EMBEDDED IN NI SUPERALLOY DEVICES AS MONITORING SYSTEMS
FELLI, Ferdinando;PILONE, Daniela;LUPI, Carla;
2004
Abstract
The most interesting metallic materials for high temperature applications are Nickel base superalloys and intermetallics. The possibility for implementing "health monitoring"for devices made of such materials represents a very attractive challenge. Such devices, operating up to temperatures of about 1000 °C include turbine blades both statorand rotor blades, jet engine components, hypersonic aircraft structural parts etc.. An embedded optical fiber should constitute a sensing element for systems which are able to detect possible damages. In this preliminary work a casting technique for embedding sapphire fibers into a Ni alloy and several methods to assure the fiber survival during the embedding process have been tested. Analyses ofthe fiber/matrix interface and light-transmission testshave been performed on the embedded fibers with promising results.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.