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Real-Time Source Classification with an Waveform Parameter Filtering of Acoustic Emission Signals  

Cho, Seung-Hyun (Center for Safety Measurement, Division of Industrial Metrology, Korea Research Institute of Standards and Science)
Park, Jae-Ha (Center for Safety Measurement, Division of Industrial Metrology, Korea Research Institute of Standards and Science)
Ahn, Bong-Young (Center for Safety Measurement, Division of Industrial Metrology, Korea Research Institute of Standards and Science)
Publication Information
Journal of the Korean Society for Nondestructive Testing / v.31, no.2, 2011 , pp. 165-173 More about this Journal
Abstract
The acoustic emission(AE) technique is a well established method to carry out structural health monitoring(SHM) of large structures. However, the real-time monitoring of the crack growth in the roller coaster support structures is not easy since the vehicle operation produces very large noise as well as crack growth. In this investigation, we present the waveform parameter filtering method to classify acoustic sources in real-time. This method filtrates only the AE hits by the target acoustic source as passing hits in a specific parameter band. According to various acoustic sources, the waveform parameters were measured and analyzed to verify the present filtering method. Also, the AE system employing the waveform parameter filter was manufactured and applied to the roller coaster support structure in an actual amusement park.
Keywords
Acoustic Emission; Waveform Parameter Filtering; Roller Coaster; Crack Growth Monitoring; Real-Time Source Classification;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
연도 인용수 순위
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