Tensile Strength of Cu Sheets Welded by Ultrasonic Metal Welding

Dong Sam Park; Ho Su Jang; Woo Yeol Park

doi:10.4028/www.scientific.net/AMR.658.202

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 658Tensile Strength of Cu Sheets Welded by Ultrasonic...

Tensile Strength of Cu Sheets Welded by Ultrasonic Metal Welding

Abstract:

This paper gives a description of an experimental study on the ultrasonic welding of metals. In ultrasonic metal welding, high frequency vibrations are combined with pressure to join two materials together quickly and securely, without generating large amount of heat. Horn, a key part of ultrasonic welding machine, should be designed very accurately to get the natural frequencies and vibration mode required. In this study, a horn is designed and developed for ultrasonic welding of Cu sheets. The tensile strength of welded parts is investigated for evaluation of weldability. Experimental parameters of welding test is set as follows; welding time 0.4s ~ 3.4sec. and vibration amplitude 40%, 60%, 80% and welding pressure 1.5bar, 2.0bar, 2.5bar. Samples are Cu sheets of 0.1mm thickness. Experimental results showed that the tensile strength increase as welding parameters increase, but when welding pressure is excessive, the tensile strength decrease due to fracture of the Cu sheets caused by over-welding. These results could be successfully applied for ultrasonic metal welding in various fields of manufacturing industry.

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Periodical:

Advanced Materials Research (Volume 658)

Pages:

202-208

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.658.202

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Online since:

January 2013

Authors:

Dong Sam Park, Ho Su Jang, Woo Yeol Park

Keywords:

Cu Sheet, Horn, Natural Frequency, Tensile Strength, Ultrasonic Metal Welding

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