A New Current Measurement Method in Resistance Spot Welding

Soo Woong Park; Suck Joo Na

doi:10.1109/19.58623

A New Current Measurement Method in Resistance Spot Welding

Soo Woong Park
, Suck Joo Na

School of Materials Science and Engineering

Korea Advanced Institute of Science and Technology

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

A new method was investigated to measure the high current in resistance welding processes. A measuring unit was developed by using a strain gage attached on the outer surface of a steel ring. The steel ring was placed around a section of the secondary loop of the welding machine and was deformed by electromagnetic forces induced by the high welding current. The circumferential constituent of the ring deformation was then used to obtain a signal voltage proportional to the secondary welding current. The strain gage signal of ring deformation is enough to determine the welding current in resistance spot welding, especially when direct current is used for the welding.

Original language	English
Pages (from-to)	767-772
Number of pages	6
Journal	IEEE Transactions on Instrumentation and Measurement
Volume	39
Issue number	5
DOIs	https://doi.org/10.1109/19.58623
State	Published - Oct 1990

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10.1109/19.58623

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abstract = "A new method was investigated to measure the high current in resistance welding processes. A measuring unit was developed by using a strain gage attached on the outer surface of a steel ring. The steel ring was placed around a section of the secondary loop of the welding machine and was deformed by electromagnetic forces induced by the high welding current. The circumferential constituent of the ring deformation was then used to obtain a signal voltage proportional to the secondary welding current. The strain gage signal of ring deformation is enough to determine the welding current in resistance spot welding, especially when direct current is used for the welding.",

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AB - A new method was investigated to measure the high current in resistance welding processes. A measuring unit was developed by using a strain gage attached on the outer surface of a steel ring. The steel ring was placed around a section of the secondary loop of the welding machine and was deformed by electromagnetic forces induced by the high welding current. The circumferential constituent of the ring deformation was then used to obtain a signal voltage proportional to the secondary welding current. The strain gage signal of ring deformation is enough to determine the welding current in resistance spot welding, especially when direct current is used for the welding.

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A New Current Measurement Method in Resistance Spot Welding

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