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Towards quantitative small-scale thermal imaging

McMillan, J L; Whittam, A; Rokosz, M; Simpson, R C (2018) Towards quantitative small-scale thermal imaging. Measurement, 117. pp. 429-434.

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Quantitative thermal imaging has the potential of reliable temperature measurement across an entire field-of-view. This non-invasive technique has applications in aerospace, manufacturing and process control. However, robust temperature measurement on the sub-millimetre (30 µm) length scale has yet to be demonstrated. Here, the temperature performance and size-of-source (source size) effect of a 3-5 µm thermal imaging system have been assessed. In addition a technique of quantifying thermal imager non-uniformity is described. An uncertainty budget is constructed, which describes a measurement uncertainty of 640 mK (k=2) for a target with a size of 10 mm. The results of this study provide a foundation for developing the capability for confident quantitative sub-millimetre thermal imaging.

Item Type: Article
Keywords: Thermal imaging, Small-scale, Sub-millimetre
Subjects: Engineering Measurements > Thermal
Divisions: Engineering, Materials & Electrical Science
Identification number/DOI: 10.1016/j.measurement.2017.12.023
Last Modified: 25 Jun 2018 13:55
URI: http://eprintspublications.npl.co.uk/id/eprint/7999

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