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刊名：HIGH-PERFORMANCE Composites
ISSN：1081-9223
出版年：2008-01-05
卷：16
期：5
起頁：55
止頁：55
分類號：TQ175
語種：英文
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內容簡介Most modern structural health monitoring (SHM) system designs rely on a damage tolerance philosophy, says Dr. Dennis Roach, a Distinguished Member of the technical staff at Sandia National Laboratories (Albuquerque, N.M.), which means that a structure can withstand some damage without failing. Historically, this philosophy has resulted in an approach to monitoring that requires that structures be periodically inspected to detect damage before it becomes critical. While there are myriad nondestructive inspection (NDI) tools available for periodic inspection - many quite advanced and accurate (see "Learn More," p. 61) - NDI techniques require significant time, trained inspectors and a stationary subject and also might require disassembly of certain components. This approach, when a commercial aircraft is grounded, translates to lost revenue. SHM offers more efficient and cost-effective ways to ascertain damage, with minimal aircraft downtime and disassembly, explains Roach. SHM also works hand in hand with an optimized design. Further, SHM technology has the potential for application not only in aircrat but also in automobiles, civil infrastructure and industrial machinery.
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