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Condensed Matter > Mesoscale and Nanoscale Physics
Title: Digest Ultrasonic Welding I: Localized Heating and Fuse Bonding
(Submitted on 14 Jan 2023)
Abstract: This paper reports a new insight on the principle of ultrasonic welding process. Physics of ultrasonic welding process is considered to be an inverse process of shear band formation. Both ultrasonic welding and shear band formation involve temperature rising due to localized plastic deformation. During shear band formation, heat will lead to damage of materials, e.g., initiation of cracks inside materials. But heat generated in ultrasonic welding process will bond two pieces or repair the cracks inside materials. Energy directors used in ultrasonic welding process act as a trigger of localized plastic deformation. Mathematically, We found out that heating generation during ultrasonic welding process is similar to heating generation by electric current.
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