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Eddy Current Testing Using a Model Based Measurement Method

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Abstract:

It is important to improve the reliability of the eddy current non-destructive testing. It is generally difficult to reduce the probability of non-detection and the number of false alarms same time. Model Based Measurement (MBM), including estimation of state, failure diagnosis and trend analysis, has excellent results on general estimation. Actual results of MBM vary with the application domain, mathematical model and data processing. The time series model is a description of system in time domain based on equivalent output. The Kalman filter is an efficient method for suppressing the disturbance and improving the state estimation. A new method, called as eddy current testing (ECT) using a model based measurement, is presented. Two time series models are used for the normal status and the abnormal status in ECT. The Kalman filter on these models is applied to give useful information for decision making. Results of the experiment on aluminum plates demonstrate that this method is useful to improve the detection reliability.

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Periodical:

Key Engineering Materials (Volumes 295-296)

Pages:

667-672

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.295-296.667

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Online since:

October 2005

Authors:

F.L. Luo, Yun Yu Hu, Z.W. Kang

Keywords:

Aluminum Plate, Detection Reliability, Eddy Current Testing (ECT), Kalman Filter (KF), Model Based Measurement MBM, Time Series Model

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© 2005 Trans Tech Publications Ltd. All Rights Reserved

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