Title: Study on thermal field of a laser heated gemstone matrix by finite element method

Authors: Radhakanta Dash; Pratima Mishra

Addresses: Advanced Materials Technology Department, CSIR Institute of Minerals and Materials Technology, Bhubaneswar, 751013, Odisha, India ' Advanced Materials Technology Department, CSIR Institute of Minerals and Materials Technology, Bhubaneswar, 751013, Odisha, India

Abstract: This paper presents the finite element modelling of the thermal field of a gemstone matrix by laser beam local heating. By using a continuous Gaussian beam of infrared laser a 3D temperature distribution in the gemstone material in the time domain is obtained. A tetrahedral mesh is used to solve the heat conduction equation in the entire 3D-structure. A transient thermal analysis of the interaction of the laser beam with the gemstone matrix reveals the temperature distribution profile throughout the volume of the material. The temperature profile of the computational model of the gemstone is in good agreement with the experimental observations.

Keywords: gemstone matrix; alumina; sapphire; laser heating.

DOI: 10.1504/IJNBM.2018.094905

International Journal of Nano and Biomaterials, 2018 Vol.7 No.4, pp.251 - 261

Received: 01 May 2017
Accepted: 16 Jan 2018
Published online: 26 Sep 2018 *

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