Ultrasonic machining is one of the most widely used non-traditional machining processes for the machining of non-conductive, brittle materials including glass, ceramics, carbides, and graphite. Ultrasonic machining is an abrasive process, and material removal is purely mechanical. The process does not cause heat affected zone and any chemical or electrical alterations on work piece surface. It does not change the metallurgical, chemical or physical properties of the work pieces. Ultrasonic machine four different mechanisms are responsible for removal of material from the work surface....