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Ab initio Physical Analysis of Single Dimensional Laser Machining of Silicon Nitride
Author(s) -
Samant A. N.,
Dahotre N. B.
Publication year - 2008
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.200800146
Subject(s) - machining , materials science , silicon nitride , ceramic , ab initio , laser beam machining , laser , silicon , mechanical engineering , optics , composite material , optoelectronics , metallurgy , laser beams , physics , quantum mechanics , engineering
The capability of pulsed Nd:YAG lasers to carry out the machining of Si 3 N 4 was explored in this study. An ab initio integrated machining model was developed by taking into account the in‐situ physical phenomena such as evaporation and decomposition of the ceramic and effect of their recoil pressure on the melt pool expulsion. The model based machined depth prediction for a given number of pulses was in close agreement with the actual measured depth of the machined cavity, thus rendering the model useful for advance machined depth predictions under a given set of processing conditions.