Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Automatic Inspection of Spot Welds by Thermography
University West, Department of Engineering Science, Division of Automation Systems. (PTW)ORCID iD: 0000-0001-6933-375X
Linköping University.
University West, Department of Engineering Science, Division of Automation Systems. (PTW)ORCID iD: 0000-0001-6331-2720
Termisk systemteknik AB.
2014 (English)In: Journal of nondestructive evaluation, ISSN 0195-9298, E-ISSN 1573-4862, Vol. 33, no 3, p. 398-406Article in journal (Refereed) Published
Abstract [en]

The interest for thermography as a method for spot weld inspection has increased during the last years since it is a full-field method suitable for automatic inspection. Thermography systems can be developed in different ways, with different physical setups, excitation sources, and image analysis algorithms. In this paper we suggest a single-sided setup of a thermography system using a flash lamp as excitation source. The analysis algorithm aims to find the spatial region in the acquired images corresponding to the successfully welded area, i.e., the nugget size. Experiments show that the system is able to detect spot welds, measure the nugget diameter, and based on the information also separate a spot weld from a stick weld. The system is capable to inspect more than four spot welds per minute, and has potential for an automatic non-destructive system for spot weld inspection. The development opportunities are significant, since the algorithm used in the initial analysis is rather simplified. Moreover, further evaluation of alternative excitation sources can potentially improve the performance.

Place, publisher, year, edition, pages
2014. Vol. 33, no 3, p. 398-406
Keywords [en]
Spot welds, Inspection, Non-destructive testing, Thermography
National Category
Engineering and Technology
Research subject
ENGINEERING, Manufacturing and materials engineering
Identifiers
URN: urn:nbn:se:hv:diva-5992DOI: 10.1007/s10921-014-0233-0ISI: 000340594600010OAI: oai:DiVA.org:hv-5992DiVA, id: diva2:700228
Projects
SpotLight
Funder
VinnovaAvailable from: 2014-03-04 Created: 2014-03-04 Last updated: 2019-05-10Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full text

Authority records BETA

Runnemalm, AnnaAppelgren, Anders

Search in DiVA

By author/editor
Runnemalm, AnnaAppelgren, Anders
By organisation
Division of Automation Systems
In the same journal
Journal of nondestructive evaluation
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 234 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf