Non-Destructive Inspection by Infrared Thermography of Resistance Spot Welds Used in Automotive Industry

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F19%3A00335456" target="_blank" >RIV/68407700:21220/19:00335456 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21340/19:00335456
Result on the web
<a href="https://doi.org/10.14311/AP.2019.59.0238" target="_blank" >https://doi.org/10.14311/AP.2019.59.0238</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.14311/AP.2019.59.0238" target="_blank" >10.14311/AP.2019.59.0238</a>

Result language
angličtina
Original language name
Non-Destructive Inspection by Infrared Thermography of Resistance Spot Welds Used in Automotive Industry
Original language description
Resistance spot welds (RSW) are one of the main joining technologies of thin sheets in automotive industry. Key factors affecting the strength of the RSW joint is the nugget diameter, asymmetry, expulsions, intended surfaces, and presence of cracks. Despite its broad use, the RSW weld quality verification is limited only to destructive testing and limited number of NDT methods. Most of the testing is done destructively by sampling, which assesses only systematic defects. Ultrasonic Testing is the most used NDT method to detect nonsystematic defects in the RSW joints, however the probability of defect detection of conventional testing techniqies is not fully satisfactory. Other approaches were invented to deal with this situation. The article uses the currently most used NDT approach of UT testing as a benchmark to evaluate ability of thermographic testing to detect defective welds of resistance spot welding (RSW) in on-line mode. The article demonstrates that infrared thermography may find systematic process errors that is not detectable by other NDT methods by analysis of different temperature drops measured after constant delay time caused by different cooling dynamics of satisfactory and non-satisfactory weld joints.
Czech name
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Czech description
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Type
J<sub>SC</sub> - Article in a specialist periodical, which is included in the SCOPUS database
CEP classification
—
OECD FORD branch
20301 - Mechanical engineering

Project
<a href="/en/project/FV10757" target="_blank" >FV10757: Termovision system for non-destructive testing of weld joints</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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