@inproceedings{81d377fc31b14dc89a310bd2752bfeb1,
title = "In-line nondestructive inspection and classification of mechanical dents in a pipeline with SH wave EMATS",
abstract = "Circumferentially guided ultrasonic Shear Horizontal wave Electromagnetic Acoustic Transducer pairs in a through-transmission mode were used for detection and characterization of mechanical dents on the outer surface of a pipe from inside. A mobile fixture with a resolver is designed for the EMAT probes so that the sensor positions and waveforms are recorded as the platform goes through the pipe. Safety critical {"}cup{"} dents and relatively benign {"}saucer{"} dents of 25% of wall thickness and deeper were successfully detected and classified with the n1 mode SH wave and a support vector machine classifier. Dent depth estimation is also possible with a signal energy correlation approach.",
keywords = "Mechanical dents, Pipeline inspection, SH EMAT, Support vector machines",
author = "X. Zhao and V. Varma and G. Mei and H. Chen",
year = "2007",
doi = "10.1063/1.2717966",
language = "English",
isbn = "0735403996",
series = "AIP Conference Proceedings",
pages = "144--151",
booktitle = "Review of Progress in Quantitative Nondestructive Evaluation",
note = "REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION ; Conference date: 30-07-2006 Through 04-08-2006",
}