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原文传递 Damage Detection Response Characteristics of Open Circuit Resonant (SansEC) Sensors.

题名：	Damage Detection Response Characteristics of Open Circuit Resonant (SansEC) Sensors.
作者：	Dudley, K. L.; Ely, J. J.; Koppen, S. V.; Mielnik, J. J.; Nguyen, T. X.; Smith, L. J.; Szatkowski, G. N.; Ticatch, L. A.; Wang, C.
关键词：	Aircraft Structures; Airframes; Composite Materials; Control Surfaces; Detection; Flight Safety; Impact Damage; Inspection; Maintenance
摘要：	The capability to assess the current or future state of the health of an aircraft to improve safety, availability, and reliability while reducing maintenance costs has been a continuous goal for decades. Many companies, commercial entities, and academic institutions have become interested in Integrated Vehicle Health Management (IVHM) and a growing effort of research into 'smart' vehicle sensing systems has emerged. Methods to detect damage to aircraft materials and structures have historically relied on visual inspection during pre-flight or post-flight operations by flight and ground crews. More quantitative non-destructive investigations with various instruments and sensors have traditionally been performed when the aircraft is out of operational service during major scheduled maintenance. Through the use of reliable sensors coupled with data monitoring, data mining, and data analysis techniques, the health state of a vehicle can be detected in-situ. NASA Langley Research Center (LaRC) is developing a composite aircraft skin damage detection method and system based on open circuit SansEC (Sans Electric Connection) sensor technology. Composite materials are increasingly used in modern aircraft for reducing weight, improving fuel efficiency, and enhancing the overall design, performance, and manufacturability of airborne vehicles. Materials such as fiberglass reinforced composites (FRC) and carbon-fiber-reinforced polymers (CFRP) are being used to great advantage in airframes, wings, engine nacelles, turbine blades, fairings, fuselage structures, empennage structures, control surfaces and aircraft skins. SansEC sensor technology is a new technical framework for designing, powering, and interrogating sensors to detect various types of damage in composite materials. In this paper a new method and system for aircraft in-situ damage detection and diagnosis is presented. Experimental test results on seeded fault damage coupons and computational modeling simulation resul
报告类型：	科技报告