A study has been made of the process of heating of an inhomogeneous solid body by laser radiation, that is described by a one-dimensional parabolic equation with a volume heat source. The inverse problem of determining the law of variation in the density of laser-radiation power with the depth of the solid body has been posed. The temperature distribution through the body′s depth at a certain fixed instant of time was used as the supplementary condition. A discrete analog of the posed problem has been constructed with finite-difference approximations. To solve the obtained difference problem, a special representation was proposed which allows splitting this problem into two mutually independent difference problems. As a result, an explicit formula has been obtained from which the law of variation in the density of laser-radiation power with the depth of the solid body is restored.
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Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 96, No. 5, pp. 1135–1141, September–October, 2023.
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Gamzaev, K.M. Numerical Solution of the Inverse Problem of Heating of a Solid Body by Laser Radiation. J Eng Phys Thermophy 96, 1128–1133 (2023). https://doi.org/10.1007/s10891-023-02777-y
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DOI: https://doi.org/10.1007/s10891-023-02777-y