Application of data fusion to thermal wave imaging with lockin thermography

Application of data fusion to thermal wave imaging with lockin thermography
复制标题

数据融合在锁定热成像热波成像中的应用

DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
A. Gleiter
A. Gleiter
中科院分区：
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文献类型：
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作者：
G. Busse;C. Spiessberger;A. Gleiter

文献摘要

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锁相热成像技术由于能在短时间内提供隐藏缺陷的相位图像，已成为材料无损检测的重要工具。然而，除了发现缺陷之外，重要的是获得更多的信息来排除它们。我们提出了一种创新的方法来结合联合收割机相位图像在不同的锁定频率，通过使用散点图。除了缺陷深度，这种数据融合方法允许特征提取，如热波反射系数，局部平面性和边缘效应，由于它们引起的横向热流。提取的特征可以追溯到原始图像。
Lockin-thermography has become a valuable tool for non-destructive testing (NDE) of materials since it provides in a short time phase images of hidden defects. However, besides finding defects it is important to derive more information to characterise them. We present an innovative way to combine phase images obtained at different lockin-frequencies by using scatter plots. Besides defect depths this method of data fusion allows for feature extraction like thermal wave reflection coefficient, local planarity, and edge effects due to the lateral heat flow caused by them. The extracted features can be traced back to the original image.