Material Removal and Fracture Detection in Micro-EDM Processes

Muslim Mahardika; Gunawan Setia Prihandana; Takashi Endo; Suyitno Suyitno; B. Arifvianto; Andi Sudiarso; Kimiyuki Mitsui

doi:10.4028/www.scientific.net/KEM.462-463.1092

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 462-463Material Removal and Fracture Detection in...

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.

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Periodical:

Key Engineering Materials (Volumes 462-463)

Pages:

1092-1096

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.462-463.1092

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Online since:

January 2011

Authors:

Muslim Mahardika, Gunawan Setia Prihandana, Takashi Endo, Suyitno Suyitno, B. Arifvianto, Andi Sudiarso, Kimiyuki Mitsui

Keywords:

Acoustic Emission Signal, Discharge Pulse Energy, Micro-Electric Discharge Machining, Online Monitoring

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