Inspection of the physical contact between two steel sheets by means of a potential drop technique

Tohmyoh, Hironori; Ikarashi, Hidetomo; Hasegawa, Yuta; Obara, Satoshi; Matsui, Yoichi

doi:10.1016/j.ndteint.2014.08.003

Cited by 1 publication

(3 citation statements)

References 15 publications

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“…Figure 3 shows the relationships between ΔV and C for ρ = 1 to 50 µΩm. As we reported previously [14], the values of ΔV decrease with increasing C for a constant value of ρ. However, ΔV is also affected by ρ.…”

Section: Results Of Numerical Analysissupporting

confidence: 86%

“…Figure 4(a) shows an overview of the experimental setup [14], which was constructed on a welding machine. A total of 19 steel sheet samples were prepared by the resistance spot welding under various welding currents, I W , of 6 to 8.5 kA.…”

Section: Measurement Of Potential Dropmentioning

confidence: 99%

“…Thus far, we have proposed a potential drop technique utilizing the electrical circuit used for resistance spot welding [14]. This technique might overcome the problem of the time required to position the sensor because the necessary components can be embedded in the welding system.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of the nugget diameter in spot welded joints between two steel sheets by means of a potential drop technique

Tohmyoh

Ikarashi

Matsui

et al. 2015

Meas. Sci. Technol.

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A potential drop technique which utilizes the electrical circuit used in resistance spot welding is reported. Spot welded samples comprising two steel sheets were inserted between the two Cu electrodes and a constant direct current was supplied between the electrodes. The potential drop between two points, one on each electrode, was determined by analysis for various values of nugget diameter and various values of the contact resistance between the Cu electrodes and the steel sheet sample. The nugget diameter of the spot welded joint could be quantitatively evaluated from the measured potential drop and the equation obtained from the analysis.

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Section: Results Of Numerical Analysissupporting

confidence: 86%

Section: Measurement Of Potential Dropmentioning

confidence: 99%