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Accession Number PB2014-107448
Title Smart Patch System to Detect Fatigue Cracks and Damage in Rotorcraft Structures.
Publication Date Feb 2014
Media Count 127p
Personal Author A. Kumar R. Ikegami S. Beard
Abstract Monitoring the continued health of aircraft subsystems and identifying problems before they affect airworthiness has been a long-term goal of the aviation industry. This project demonstrated a Smart Patch System (SPS) that could be used for the in-service health monitoring of new and existing commercial rotorcraft structures. The objectives of this project were to: (1) Develop, validate, and demonstrate SPS technologies, including advanced software, algorithms, and methodologies for structures and dynamic components to (1) detect fatigue cracks and damages before exceeding critical threshold or incipient failure and (2) characterize fatigue cracks and damages, and (2) Develop preliminary certification compliance requirements and a framework for certification of an SPS that would be integrated into a Health and Usage Monitoring System for fatigue crack monitoring of commercial rotorcraft structures per the guidelines provided in Federal Aviation Administration Advisory Circular 29-2C, Section MG-15. This report describes the work conducted during a 5-year project. It presents the details on the tasks that were conducted toward the development, validation, and potential certification of an SPS for a specific structural application.
Keywords Airworthiness
Damage assessment
Dynamic structural analysis
Fatigue tests
Health and usage monitoring system software
Rotary wing aircraft
Smart Patch System(SPS)

Source Agency Department of Transportation Federal Aviation Administration
NTIS Subject Category 51C - Aircraft
46E - Structural Mechanics
Corporate Author Acellent Technologies, Inc., Sunnyvale, CA.
Document Type Technical report
Title Note N/A
NTIS Issue Number 1421
Contract Number N/A

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