Modeling of surface roughness and the role of debris in micro-EDM
DSpace at IIT Bombay
View Archive InfoField | Value | |
Title |
Modeling of surface roughness and the role of debris in micro-EDM
|
|
Creator |
KIRAN, MPSK
JOSHI, SS |
|
Subject |
material removal
machining process discharge micro-edm surface roughness single-spark plasma spark erosion debris inclusion |
|
Description |
Surface roughness is one of the important quality characteristic of a micromachined component. This paper presents a model to predict surface roughness of micro-EDmachined surfaces. The model is based on the configuration of a single-spark cavity formed as a function of process parameters. Assuming the normal distribution of surface heights, the mu and sigma (R-q) of the surface profile arc evaluated after every spark. The model was further extended to capture the role of debt-is in inicro-EDM in changing electric potential at the micropeaks on the cathode surfaces. The chemical kinetics approach was used to evaluate the change in plasma enthalpy and composition as a result of debris inclusion in the dielectric. The corresponding energy distribution between the electrodes was used to predict configuration of the single-spark cavity and the consequent surface roughness using the earlier surface roughness model. The modeling results were found to agree well with the inicro-EDM validation experiments performed without and with the inclusion of artificial debris (iron particles) in the dielectric.
|
|
Publisher |
ASME-AMER SOC MECHANICAL ENG
|
|
Date |
2011-07-18T18:34:07Z
2011-12-26T12:50:46Z 2011-12-27T05:36:49Z 2011-07-18T18:34:07Z 2011-12-26T12:50:46Z 2011-12-27T05:36:49Z 2007 |
|
Type |
Article
|
|
Identifier |
JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING-TRANSACTIONS OF THE ASME, 129(2), 265-273
1087-1357 http://dx.doi.org/10.1115/1.2540683 http://dspace.library.iitb.ac.in/xmlui/handle/10054/5018 http://hdl.handle.net/10054/5018 |
|
Language |
en
|
|