Numerical simulation results obtained in investigating laser paint removal from different metal substrates, mainly aluminum and aluminum alloys, are presented. The main purpose of the developed simulation model is to define the laser installation specifications required for an operation that does not affect the substrate on which the paint is deposited. This is an important laser application in aeronautical industry. The developed simulation model considers transverse laser beam intensity distribution and, consequently, the temperature distribution in the processed mechanical component.
The preliminary numerical simulation results obtained in the analysis of a landmine detection system based on laser
excitation of acoustic - seismic waves in the soil and observing its surface vibration above the embedded landmine are
presented. The presented numerical simulations comprise three main parts: 1) Laser oscillator and laser beam
propagation and absorption in soil; a laser oscillator operated in Q-switched regime is considered; different laser
wavelengths are investigated. 2) Acoustic - seismic wave generation by absorption in soil of laser pulse energy; 3)
Evaluation of acoustic - seismic wave generation by the buried in soil landmine; 4) Comparison of Distributed Feed-
Back Fiber Laser (DFB-FL) and Laser Doppler Vibrometer (LDV) detector used for soil vibrations evaluation. The
above mentioned numerical simulation is dedicated for evaluation of an integrated portable detection system.
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