Vibration characterisation in new rotational vibration-assisted incremental sheet forming

An experimental study is conducted to measure vibrations of the deforming sheet induced by tool rotations in a newly developed incremental sheet forming (ISF) process, Rotational Vibration assisted ISF (RV-ISF). Two new tool designs, elliptical double-offset tool and rosette tool of four-grooves, are tested in the experiment. Non-contact measurements by Eddy current sensor are obtained to characterise vibration frequency and amplitude of the deforming sheet during the RV-ISF of an aluminium alloy.