Reduction of thermal data using neural networks

被引：0

作者：

Winfree, WP ^{[1
]}

Cramer, KE ^{[1
]}

机构：

[1] NASA, Langley Res Ctr, Hampton, VA 23681 USA

来源：

THERMOSENSE XXII | 2000年 / 4020卷

关键词：

thermography; NDE; neural networks; corrosion detection;

D O I：

10.1117/12.381542

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A scanned thermal line source is a rapid and efficient technique for detection of corrosion in aircraft components. Reconstruction of the back surface profile from the data obtained with this technique requires a nonlinear mapping. Neural networks are an effective method for performing nonlinear mappings of one parameter space to another. This paper discusses the application of neural networks to the reconstruction of back surface profiles from the data obtained from a thermal line scan. The neural network is found to be a very effective method of reconstructing arbitrary surface profiles. The network is trained on simulations of the thermal line scan technique. The trained network is then applied to both simulated and experimentally obtained data. The reconstructed profiles are in good agreement with independent characterizations of the profiles. Limitations of the reconstruction technique are illustrated by presenting results for several different configurations.

引用

页码：128 / 136

页数：9

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