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Ultrasonic machining (USM) is one of the non-conventional techniques extensively used in industries for machining hard and brittle materials. The USM operates on a very high frequency of around 20–40 kHz and the tool which vibrates gives amplitude of around 5 μm. However, in order to achieve proper machining, the tool must have an amplitude of around 10–100 μm. Therefore, the ultrasonic horn magnifies...
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