Optical fiber sensors are promising as tools for damage and structural health monitoring (SHM) of aerospace composite structures. The authors and Hitachi Cable, Ltd. have recently developed small-diameter optical fiber and its fiber Bragg grating (FBG) sensor for embedment inside a lamina of composite laminates without strength reduction. First, a brief summary is presented for some previous studies on the small-diameter FBG sensors for damage monitoring and SHM of composite structures. Then, some recent results in the current ACS-SIDE project are presented on optical fiber based SHM for some feasible applications in aerospace composite structures, which include (1) PZT/FBG hybrid sensing system for bond-line monitoring in CFRP box structures, (2) Highly reliable advanced grid structures (HRA.GS), and (3) Distributed strain sensing using Brillouin optical correlation domain analysis. Optical fiber sensors including FBG are promising as tools; for SHM of aerospace composite structures. Some recent results in the current ACS-SIDE project were presented on optical fiber based SHM for some feasible applications in aerospace composite structures, which include (1) PZT/FBG hybrid sensing system for bond-line monitoring in CFRP box structures, (2) Highly reliable advanced grid structures (HRAGS), and (3) Distributed strain sensing using Bnlloum optical correlation base analysis (BOCDA). These techniques are necessary to assure the safety and reliability of advanced composite structures and to reduce the maintenance cost as well for practical use.
Towards damage and structural health monitoring of aerospace composite structures using optical fiber sensors
Ein Beitrag zur Schadensüberwachung und Strukturfunktionssicherheitsüberwachung von Verbundkonstruktionen der Luft- und Raumfahrttechnik mit Hilfe von faseroptischen Sensoren
2006
12 Seiten, 15 Bilder, 34 Quellen
Conference paper
English
Schaden , Funktionssicherheit , Überwachung , Verbundkonstruktion , Luftfahrttechnik , Raumfahrttechnik , faseroptischer Sensor , optische Faser , Bragg-Gesetz , Beugungsgitter (Optik) , Schichtwerkstoff , Lamelle , carbonfaserverstärkter Kunststoff , Gitterstruktur , Zuverlässigkeit , Instandhaltungskosten
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