6533b852fe1ef96bd12aa8d2

RESEARCH PRODUCT

laser beam scattering effects in non-homogeneous polymers

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description

Laser Welding; Light Scattering ;Polymer; Mie Theory; Monte Carlo; International audience; In this paper a numerical model for laser beam scattering in the semi-transparent polymers is presented, using a Monte Carlo algorithm and the Mie theory. The algorithm correctly accounts for the independent multiply-scattered light. We describe the algorithm, present a number of important parameters that account in the welding process, and explicitly show how the algorithm can be used to estimate the laser beam intensity both inside the semi-transparent component and at the welding interface and the beam widening. For the model validation an experimental bench test has been realized and some results from two test cases are presented.