Paper Title:
Material Removal and Fracture Detection in Micro-EDM Processes
  Abstract

The important thing in micro-machining is its accuracy. The Micro-Electrical Discharge Machining (micro-EDM) is a promising method in micro-machining, because (1) the process is independent on the hardness of the workpiece but only depends on its thermal conductivity and melting point and (2) it can be used to machine materials with highly complex geometrical shapes using a simple-shaped tool electrode. However, the process in micro-EDM is not totally well-known, especially related to the formation of discharge pulse energy and the fracture phenomena. In the micro-EDM processes, the formation of discharge pulse energy is a complex phenomenon, since it is related to many parameters such as discharge gap, charge voltage, capacitance, and tool electrode wear. In this paper, the Acoustic Emission (AE) sensor is used to detect the changes of discharge pulse energy during machining of brass using micro-EDM. The results shows that the AE signals can detect and explain the fracture phenomena during the micro-EDM processes.

  Info
Periodical
Key Engineering Materials (Volumes 462-463)
Edited by
Ahmad Kamal Ariffin, Shahrum Abdullah, Aidy Ali, Andanastuti Muchtar, Mariyam Jameelah Ghazali and Zainuddin Sajuri
Pages
1092-1096
DOI
10.4028/www.scientific.net/KEM.462-463.1092
Citation
M. Mahardika, G. S. Prihandana, T. Endo, Suyitno, B. Arifvianto, A. Sudiarso, K. Mitsui, "Material Removal and Fracture Detection in Micro-EDM Processes", Key Engineering Materials, Vols. 462-463, pp. 1092-1096, 2011
Online since
January 2011
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$32.00
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