CONTEMPORARY PROBLEMS, EXPERIMENTS, THEORY, PHASE TRANSITIONS PROVOKED BY LASER BEAMS IN CONDENSED MATTER

This paper analyses the broad issues interaction of laser beams with condensed material. For purpose of lasers in materials processing, many of the fundamental and phenomenological models were developed of which the authors have chosen some and rated the results of the interaction of selected exampl...

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Bibliographic Details
Published inAnnals of Faculty Engineering Hunedoara Vol. 10; no. 3; p. 467
Main Authors Sreckovic, M, Dinulovic, M, Janicijevic, M, Rajkovic, V, Popov, V, Karastojkovic, Z, Ivanovic, N
Format Journal Article
LanguageEnglish
Published Hunedoara Faculty of Engineering Hunedoara 01.07.2012
Subjects
Experiments
Lasers
Simulation
Theory
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Summary:This paper analyses the broad issues interaction of laser beams with condensed material. For purpose of lasers in materials processing, many of the fundamental and phenomenological models were developed of which the authors have chosen some and rated the results of the interaction of selected examples. Examples are based on the possible existing types of lasers and operating modes, the energy and pulse width. For given real pulses, the distribution of temperature is estimated for two models of time and phase transitions. The interaction is considered for Dirack δ-pulse and the pulse of complex shape. For given operating parameters, experiments were performed, which have shown the possible further analysis of the interaction, which do not offer thermal models in the first place. Times when it comes to the melting were estimated using applied model and results show that predictions, based on this model, are much better for metals like steel than for aluminum and copper, which were problematic for treatment from the beginning of laser technique. [PUBLICATION ABSTRACT]
ISSN:1584-2665
2601-2332