Title of Paper:Thermography pattern analysis and separation

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Journal:Applied Physics Letters

Abstract:This letter proposes a nonnegative pattern separation model for eddy current pulsed thermography (ECPT) to automatically extract important spatial and time patterns according to the transient thermal sequences without any pre-training or prior knowledge. In particular, the method is scale-invariant such that large differences in surface emissivity, hot spots, and cool areas with dynamic range of thermal contrast can be extracted. Finally, an artificial slot in a steel sample with shining and black strip on the surface is tested to validate the proposed method.

All the Authors:Bin Gao, Libing Bai, W. L. Woo,Guiyun Tian

Discipline:Engineering

Volume:104

Issue:251902

Page Number:1-4

Translation or Not:no

Date of Publication:2014-06-23