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Title: Mathematical modelling of the fibre laser surface processing of a zirconia engineering ceramic by means of three-dimensional finite-element analysis
Authors: Shukla, Pratik P.
Lawrence, Jonathan
Keywords: Fibre laser
Surface processing
ZrO2 engineering ceramics
Finite-element modelling
Phase transformation
Unigraphics (Nastran NX 5.0)
Issue Date: 2011
Publisher: Sage / © IMechE
Citation: SHUKLA, P.P. and LAWRENCE, J., 2011. Mathematical modelling of the fibre laser surface processing of a zirconia engineering ceramic by means of three-dimensional finite-element analysis. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 225 (4), pp. 949-964.
Abstract: The thermal effects of fibre laser surface treatment on a ZrO2 engineering ceramic were studied using a computational finite-element model (FEM). Temperature increases on the surfaceandthe bulk of theZrO2 during the fibre laser processingwere measured usinganinfra-red thermometer and specifically located thermocouples. The results showed an error of 5 per cent with the surface and 18 per cent within the bulk of the ZrO2 when comparing the experimental readings with those of the FEM. The FEM revealed a relationship between the traverse speed, power density, time, depth, and the temperature during various stages of the fibre laser surface treatment of the ZrO2. By utilizing data obtained from a thermogravimetry-differential scanning calorimetry (TG-DSC), the FEM predictions of the temperature distribution were used to map phase transformations and significant events occurring during the fibre laser surface treatment of the ZrO2. The mapping revealed that the fibre laser surface treatment generally resulted in a phase transformation of the ZrO2 at various temperatures changes as further shown in the article.
Version: Published
DOI: 10.1243/09544062JMES2434
URI: https://dspace.lboro.ac.uk/2134/7670
Publisher Link: http://dx.doi.org/10.1243/09544062JMES2434
ISSN: 0954-4062
2041-2983
Appears in Collections:Published Articles (Mechanical and Manufacturing Engineering)

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