Comparative study of ultrasonic vibrations assisted EDM and magnetic field assisted EDM processes

Zero Magnetic Field Environment for EDM Measurement

Neutron electric dipole moment measurement (EDM) requires precise control of the electric and magnetic field in the test cell. External magnetic field should be shielded out completely. As the experiment will be conducted in cryogenic environment (~ 4K), conventional μ-metal shield cannot work in low temperature. Shielding property of another magnetic material, Metglas, was study in this projec...

FEM Modeling of Ultrasonic Vibration Assisted work-piece in EDM Process

In Electrical Discharge Machining, oxides (or debris) are created and accumulated in the sparking gap between an electrode and a work piece. If the debris density becomes too great in certain points in the gap, there is a reduction in the resistance, which encourages the formation of abnormal discharges, results in significant electrode damage and slows down the material removal rate. To enhanc...

The EDM Vis Tool

We introduce EDM Vis, an information visualization software tool for exploring, navigating and understanding student data logs. EDM Vis loads student logs, entire classes, hundreds of students, at a time, and displays the student behavior of those students as they solved problems using a software tutor. The visualization uses a tree structure to provide an overview of class performance, and int...

Ethics and Privacy in EDM

Educational data mining is inherently falls into the category of the so-called secondary data analysis. It is common that data that have been collected for administrative or some other purposes at some point is considered as valuable for other (research) purpose. Collection of the student generated, student behavior and student performance related data on a massive scale in MOOCs, ITSs, LMS and...

Edm of Tool Steel

Effect of low-frequency vibration on workpiece in EDM processes

High-frequency vibration aided EDM has become one of the ways to increase material removal rate in EDM process, due to the flushing effect caused by vibration. However, utilizing high-frequency vibration, especially in ultrasonic range consumes a lot of setup cost. This work presents an attempt to use a low-frequency vibration on workpiece of stainless steel (SS 304) during EDM process. The wor...