Ultrasonic welding of metals - ScienceDirect
https://www.sciencedirect.com/science/article/pii/B9781782420286000119
WEBJan 1, 2015 · Ultrasonic metal welding is a solid-state bonding process in which ultrasonic vibrations create friction-like motion between two surfaces, causing deformation and shearing of asperities to bring metal-to-metal contact and bonding. Applications include the electrical/electronic, automotive, aerospace, and medical products industries.
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