A novel AE algorithm-based approach for the detection of cracks in spot welding in view of online monitoring: case study

The detection of cracks in spot welding is a major issue especially online. This paper deals with this topic using acoustic emission monitoring. It proposes an approach based on Shannon entropy with a novel criterion that allows increasing the detection sensitivity. A data-based model is built, code...

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Bibliographic Details
Published inInternational journal of advanced manufacturing technology Vol. 117; no. 5-6; pp. 1807 - 1824
Main Authors Yaacoubi, Slah, Dahmene, Fethi, El Mountassir, Mahjoub, Bouzenad, Abd Ennour
Format Journal Article
LanguageEnglish
Published London Springer London 01.11.2021
Springer Nature B.V
Subjects
Acoustic emission
Algorithms
CAE) and Design
Computer-Aided Engineering (CAD
Cracks
Dye penetrants
Engineering
Entropy (Information theory)
Flaw detection
Flow charts
Fluorescent dyes
Industrial and Production Engineering
Mechanical Engineering
Media Management
Monitoring
Nonstationary environments
Original Article
Resistance spot welding
Acoustic emission
Shannon entropy
Novel approach
LME cracks
Online monitoring
Crack detection
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Summary:The detection of cracks in spot welding is a major issue especially online. This paper deals with this topic using acoustic emission monitoring. It proposes an approach based on Shannon entropy with a novel criterion that allows increasing the detection sensitivity. A data-based model is built, coded, and then applied on acoustic emission signals. The obtained crack detection results are satisfactory. The cracks are revealed using fluorescent dye penetrant, which enables validating the method. A flowchart of whole the proposed approach is described so that practitioners can benefit from the authors experience, towards successful implementation in laboratory as well as in production line. The current approach is applied on resistance spot welding as a case of study, but it could be applicable in nonstationary environment such as other kinds of spot welding, and more hopefully for other manufacturing processes.
ISSN:0268-3768
1433-3015
DOI:10.1007/s00170-021-07848-z