Electromagnetic Welding of Tubular Joints for Nuclear Applications

Sharma, Srishti; Sharma, Archana

doi:10.1007/978-981-13-0378-4_10

Cited by 4 publications

(2 citation statements)

References 11 publications

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“…This process ensures the creation of a reliable electrical connection between the cable strands and the lug. The achievement of uniform pressure around the lug's circumference is key for this purpose [1][2][3] .…”

Section: High Voltage-energy Storage Capacitormentioning

confidence: 99%

Utilization of Capacitor Bank for Electromagnetic Pulse Crimping

Ali,

Sharma,

Lanje

et al. 2024

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Capacitors play an important role in an electrical system. They have numerous applications in the field of lasers, fast X-ray, neutron sources, electromagnetic pulse generators, electron beam accelerators, plasma generation and electromagnetic welding of materials. One of the applications of high voltage capacitors as energy storage and discharge devices is in the crimping of cables using the electromagnetic pulse forming technique. This research paper investigates the use of a high-voltage energy storage capacitor with a capacitance of 208 microfarads and rated voltage of 44 kV to perform Electromagnetic Pulse Crimping (EMPC) of lugs for 70 mm2 and 120 mm2 cables. The capacitor operates at 12 kV and is discharged to produce a high current that generates a strong magnetic field of up to 20 Tesla, which is utilized for joining the cable conductor and the lug. The study examines the performance of the capacitor under different operating values such as voltage, capacitance, and discharge time and investigates the effect of these parameters on the termination quality. The paper presents the experimental results of the crimping, which include the contact resistance, weld strength, microstructure, and defects of the welded joints. The results indicate that the capacitor-based electromagnetic pulse crimping produces welds with high strength and minimal defects. Additionally, the paper discusses the future scope of research in this area and the potential applications of such capacitors in other welding techniques. The findings of this research paper provide valuable insights for engineers and researchers working in the field of energy storage, high-voltage applications and welding.

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Section: High Voltage-energy Storage Capacitormentioning

confidence: 99%

Utilization of Capacitor Bank for Electromagnetic Pulse Crimping

Ali,

Sharma,

Lanje

et al. 2024

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“…The power train, which includes the engine, differential section, and gear box, is a major source of vibrations in a vehicle. This has a significant impact on the connector's resistance, stability, and durability [6]. Compression with a traditional crimping tool degrades the material owing to relaxation or partial release.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigations on magnetic pulse crimping of copper lug

et al. 2023

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One of the most complicated issues in the production of electronic circuit boards, vehicles, aircraft, satellite, and communication components is the crimping of electrical wires to produce a secure connection. Furthermore, terminal crimping is crucial to the safe transmission of electricity; improper crimping causes difficulties like overheating of the plug, power loss, arcing, and mechanical connection failure. Magnetic pulse crimping has the ability to effectively address these difficulties. Magnetic pulse crimping is a non-contact technique creating a uniform pressure without any tool marks on lugs. This technique has better compression of conducting metal wires strands inside the lug and also has less voids compared to conventional mechanical crimping techniques. In this technique the pulsed magnetic field is generated inside the electromagnetic coil by the discharge of capacitor bank current. This magnetic field applies uniform pressure across the circumference of lug and crimp it with cable. Significant improvements in leak rate in magnetically crimped lugs is seem compared to mechanically crimped 120 sq mm copper lugs. This technique also reduces the contact resistance and ultimately the temperature during operation in electrical system.

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