Statistical and Dempster-Shafer techniques in testing structural integrity of aerospace structures

Roberto A. Osegueda; Seetharami R. Seelam; Bharat Mulupuru; Vladik Kreinovich

doi:10.1117/12.483959

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1 August 2003 Statistical and Dempster-Shafer techniques in testing structural integrity of aerospace structures

Roberto A. Osegueda; Seetharami R. Seelam; Bharat Mulupuru; Vladik Kreinovich

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Proceedings Volume 5047, Smart Nondestructive Evaluation and Health Monitoring of Structural and Biological Systems II; (2003) https://doi.org/10.1117/12.483959
Event: NDE for Health Monitoring and Diagnostics, 2003, San Diego, California, United States

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.

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Roberto A. Osegueda, Seetharami R. Seelam, Bharat Mulupuru, and Vladik Kreinovich "Statistical and Dempster-Shafer techniques in testing structural integrity of aerospace structures", Proc. SPIE 5047, Smart Nondestructive Evaluation and Health Monitoring of Structural and Biological Systems II, (1 August 2003); https://doi.org/10.1117/12.483959

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