Conference proceeding
Adaptive and robust filtering techniques for ultrasonic flaw detection
Proceedings., IEEE Ultrasonics Symposium, v 2, pp 1145-1149
1989
Abstract
An overview is presented of a number of adaptive flaw enhancement techniques based on the statistical properties of the order-statistic operation (e.g. median or minimization) or the group delay of the received ultrasonic signal. Nonlinear statistical-filtering techniques using frequency-diverse observations that utilize these adaptive properties to improve flaw detection are examined. These concepts are also applied to develop an adaptive-correlation receiver. Furthermore, it is shown that the geometric mean of the decorrelated observations yields outputs that are relatively insensitive to critical-processing parameters. Experimental results using stainless steel samples are presented to demonstrate the robust and adaptive nature of the filters.< >
Metrics
13 Record Views
Details
- Title
- Adaptive and robust filtering techniques for ultrasonic flaw detection
- Creators
- X Li - Drexel UniversityR Murthy - Drexel UniversityK Donohue - Drexel UniversityN.M Bilgutay - Drexel University
- Publication Details
- Proceedings., IEEE Ultrasonics Symposium, v 2, pp 1145-1149
- Conference
- IEEE Ultrasonics Symposium
- Publisher
- IEEE
- Number of pages
- 1
- Resource Type
- Conference proceeding
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Other Identifier
- 991019182643804721