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THERMAL DAMAGE DUE TO INCIDENTAL CONTINUOUS CO2 LASER IRRADIATION ON HUMAN SKIN

ABSTRACT
The use of laser instruments in almost every aspect of technology may lead to sudden exposing of human skin to laser radiation, especially with an invisible laser, such as continuous CO2 laser, causing harmful thermal damage to the exposed area. This phenomena is studied in this work where the size of thermal damage is obtained using a well-known thermal dose equation which requires the transient temperature distributions obtained from finite element solution of the axi-symmetric heat equation. In this work a numerical simulation of these processes is applied indicating that the size of thermal damage zone inside human tissue seems to increase as power increases even if the exposing time is reduced, whereas the shape of thermally damage zone extends laterally much more than in-depth due to the effect of absorption coefficient and perfusion rate of skin tissue. Finally, this work may establish the concept of numerical investigation of an incidental laser hazard on human skin.
KEYWORDS
PAPER SUBMITTED: 2008-08-05
PAPER REVISED: 2009-01-05
PAPER ACCEPTED: 2009-01-31
DOI REFERENCE: https://doi.org/10.2298/TSCI1002451S
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2010, VOLUME 14, ISSUE 2, PAGES [451 - 458]
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© 2019 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence