Abstract
During the milling of thin-walled and flexible structures such as those manufactured for theaerospace industries, workpiece chatter can become a key factor that limits productivity.Chatter is a form of self-excited vibration that can be stabilized by increasingthe damping of the vibrating structure. In the present study, an experimentalinvestigation is described which assesses the feasibility of using piezoelectric activevibration control to mitigate workpiece chatter in milling. A positive positionfeedback control strategy is used, and a series of milling tests is performed, whichdemonstrate a sevenfold improvement in the limiting stable depth of cut. Thepractical issues concerning the application of this technique are then discussed.
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