Investigation of temperature distribution during CO2 and Fibre laser processing of Si3N4 engineering ceramic by means of a computational and experimental approach

Shukla, Pratik and Lawrence, Jonathan (2014) Investigation of temperature distribution during CO2 and Fibre laser processing of Si3N4 engineering ceramic by means of a computational and experimental approach. Lasers In Engineering, 27 (3-4). pp. 135-160. ISSN 0898-1507

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Abstract

Temperature distribution was predicted using a computational and experimental means during a CO2 and fibre laser surface treatment of a Si3N4 engineering ceramic. The temperature of the CO2 laser surface treatment (LST) was 42% lower in comparison to that of the fibre laser. Both the bulk and the surface temperatures for the finite element model (FEM) were also higher for the fibre LST in comparison to the CO2 LST. This was due to the difference in the difference in the wavelengths and the brightness of the two lasers during the laser-Si3N4 interaction. Both the FEM and the experimental model enabled the prediction of additional process parameters for future development of laser surface treatment.

Keywords:FEM, Lasers, Ceramics, NotOAChecked
Subjects:F Physical Sciences > F200 Materials Science
J Technologies > J310 Ceramics
F Physical Sciences > F361 Laser Physics
Divisions:College of Science > School of Engineering
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ID Code:9260
Deposited On:02 May 2013 20:42

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