An Effective Way to Validate Signal Arrival Time in AE Structural Monitoring

Jie Xu

doi:10.4028/www.scientific.net/AMR.163-167.2471

Paper Titles

Structural Optimization Design of Rear Axle Housing Excited by Dynamic Load
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Analysis on Integral Performance of Unit Glazing Curtain Wall Considering the Contribution of Glass Rigidity
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A Novel Acoustic Emission Technique to Monitor Damage Evolution in Masonry Structures
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Damage-Relevant Evaluation in Appraising Dangerous Buildings
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An Effective Way to Validate Signal Arrival Time in AE Structural Monitoring
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The Design and Application of Piezoelectric Friction Damper with Self-Powered and Sensing Control System
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Effect of Attribute Reduction on Rough-Probabilistic Neural Network for Structural Damage Detection
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Delamination Patch Detection in FRP Composite with 3×3 Coupler Based Mach-Zehnder Interferometer
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The Influence of Crack on the Dynamic Characteristic and Acoustic Radiation Characteristic of Gear Plate
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 163-167An Effective Way to Validate Signal Arrival Time...

An Effective Way to Validate Signal Arrival Time in AE Structural Monitoring

Abstract:

A practical method, based on the Akaike Information Criterion (AIC), is used to detect automatically the first P-wave arrival times during Acoustic Emissions (AE) monitoring. This method is used to increase the accuracy of detection procedure and to reject the data errors automatically. Two parameters, the quantification of the degree of certainty and the apparent velocity between observation sensors, were proposed to check the validity of AE events and to neglect errors. Both the original AIC-picker and improved AIC-picker algorithms are applied to AE signal processing. It can be shown that the improved AIC-picker is a reliable tool for automatic onset detection of AE signals.