Abstract
With the instantaneous breakdown of the dielectric and the propagation of discharge plasma channel, a high-pressure bubble is generated in the inter-electrode gap of wire electrical discharge machining (WEDM). Since the bubble oscillates in a limited space with uneven gap width distribution caused by the cylindrical shape of the wire electrode, the behavior of the bubble becomes complicated, which exerts a direct impact on the spatio-temporal evolution of the discharge reaction force acting upon the wire electrode. This research intends to clarify the formation mechanism of the discharge reaction force and its correlation with the behavior of the bubble. Observations through high-speed video camera from different viewing directions are carried out. Based on the observed video images, the motions of the bubble, such as deformation and collapsing phenomena were captured and analyzed. Moreover, the peaks of reaction force generated by a single discharge were measured using the Hopkinson bar method. It was found that the waveform of the force showed a complicated vibration coinciding with the motions of the bubble, and the peak of the force reached several Newtons.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
