Use of Acoustic Emission as a Weld Quality Monitor.

Jolly, W.D.

doi:10.2172/4072855

Cited by 5 publications

(3 citation statements)

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“…Thanks to this trigging, the welding phases (welding time, holding time and lift-off) are covered by the acoustic signal, as it is illustrated in the same figure. Unlike the works of Joly [3] and Luo [24], no phase can be identified! In other words, the signal is continuous, and no echo can be distinguished from the rest.…”

Section: Collected Datamentioning

confidence: 88%

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

Yaacoubi

Dahmene

Mountassir

et al. 2021

Int J Adv Manuf Technol

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The detection of cracks in spot welding is a major issue especially on-line. 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 non-stationary environment such as other kinds of spot welding, and more hopefully for other manufacturing processes.

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Section: Collected Datamentioning

confidence: 88%

“…the set-down of the electrodes, the squeeze, the current flow, the holding time or forging, and the lift-off). In some cases, these stages can be easily identified in the AE acquired signal [3,4]. If the crack generates a separated echo from those of the different stages of the process, its detection is a trivial task.…”

Section: Introductionmentioning

confidence: 99%

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

Yaacoubi

Dahmene

Mountassir

et al. 2021

Int J Adv Manuf Technol

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

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

Yaacoubi

Dahmene

Mountassir

et al. 2021

Preprint

View full text Add to dashboard Cite

The detection of cracks in spot welding is a major issue especially on-line. 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 non-stationary environment such as other kinds of spot welding, and more hopefully for other manufacturing processes.

show abstract

On the nondestructive testing and monitoring of cracks in resistance spot welds: recent gained experience

et al. 2022

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Use of Acoustic Emission as a Weld Quality Monitor.

Cited by 5 publications

References 0 publications

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

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

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

On the nondestructive testing and monitoring of cracks in resistance spot welds: recent gained experience

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