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

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/68407700:21340/19:00335456

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

20301 - Mechanical engineering

Projekt

<a href="/cs/project/FV10757" target="_blank" >FV10757: Termovizní systém pro nedestruktivní testování svarových spojů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Acta Polytechnica

ISSN

1210-2709

e-ISSN

1805-2363

Svazek periodika

59

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

10

Strana od-do

238-247

Kód UT WoS článku

000484345300004

EID výsledku v databázi Scopus

2-s2.0-85070767919