Enabling thermography of highly reflective laser welds using a multi-flash sequence approach

A multi-flash thermography approach was developed to enable thermographic inspection of highly reflective samples without the need for an emissivity-altering coating. The multi-flash thermography approach was able to reliably remove reflections and isolate the weld region of interest. Properly isola...

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Bibliographic Details
Published inManufacturing letters Vol. 33; pp. 74 - 81
Main Authors McGovern, Megan E., Rinker, Teresa J., Wagner, Sean R., Sekol, Ryan C., Lesperance, Ronald, Schroth, James G., Wegner, Diana
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.09.2022
Subjects
flash thermography
high reflectivity
laser welds
low emissivity
metal welds
nondestructive evaluation
paint
low emissivity
metal welds
high reflectivity
laser welds
nondestructive evaluation
paint
flash thermography
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Summary:A multi-flash thermography approach was developed to enable thermographic inspection of highly reflective samples without the need for an emissivity-altering coating. The multi-flash thermography approach was able to reliably remove reflections and isolate the weld region of interest. Properly isolating the weld region of interest enables weld assessment for highly reflective metal welded joints, such as laser welds. Future work includes exploring various techniques to both identify the weld as well as analyze the weld quality via machine learning approaches.
ISSN:2213-8463
2213-8463
DOI:10.1016/j.mfglet.2022.07.049