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Proceedings Paper

Statistical and Dempster-Shafer techniques in testing structural integrity of aerospace structures
Author(s): Roberto A. Osegueda; Seetharami R. Seelam; Bharat Mulupuru; Vladik Kreinovich
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Paper Abstract

Several techniques are known for non-destructive testing of aerospace structures, such as pulse echo, Eddy current, magnetic resonance, etc. Each of these techniques detects some faults but misses others, so it is desirable to combine (fuse) the results of these techniques. Several methods of data fusion are known. To improve the quality of fault detection, we modified the straightforward statistical method as follows: (1) we computed mean and variance iteratively: detected faults are excluded form the computation on the next iteration; (2) we treated the plate's edge and the inside separately; (3) we dismissed measurements in which only one technique detects a fault as possibly erroneous. The resulting method indeed leads to a much better fault detection.

Paper Details

Date Published: 1 August 2003
PDF: 12 pages
Proc. SPIE 5047, Smart Nondestructive Evaluation and Health Monitoring of Structural and Biological Systems II, (1 August 2003); doi: 10.1117/12.483959
Show Author Affiliations
Roberto A. Osegueda, Univ. of Texas at El Paso (United States)
Seetharami R. Seelam, Univ. of Texas at El Paso (United States)
Bharat Mulupuru, Univ. of Texas at El Paso (United States)
Vladik Kreinovich, Univ. of Texas at El Paso (United States)


Published in SPIE Proceedings Vol. 5047:
Smart Nondestructive Evaluation and Health Monitoring of Structural and Biological Systems II
Tribikram Kundu, Editor(s)

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