کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
295379 | 511542 | 2011 | 8 صفحه PDF | دانلود رایگان |
NDE using ultrasonic signals is a very useful technique for the assessment of solid materials, construction, food, and biomedicine. Among many NDE methods, the ultrasonic inspections may involve the extraction of an appropriate set of features or a neural network for the classification of the signals in the feature space. This paper presents an approach that uses a geometric method and the LMS (Least Mean Square) algorithm to determine the coordinates of the ultrasonic probe followed by the SAFT (Synthetic Aperture Focusing Technique) and centroid searching technique to estimate the location of the ultrasonic reflector. The proposed method is employed to classify ultrasound NDE signals from cracks and deposits within steam generator tubes in a nuclear power plant.
► It uses the LMS algorithm to determine the coordinates of the ultrasonic probe followed by the SAFT.
► It uses a centroid searching technique to estimate the location of the ultrasonic reflector.
► It is employed to classify ultrasound NDE signals from cracks and deposits within steam generator tubes.
Journal: NDT & E International - Volume 44, Issue 8, December 2011, Pages 760–767