ABSTRACT
Laser paint removal involves few complex mechanisms such as photothermal, photochemical and mechanical effects, which the exact mechanisms depend on the laser parameters and the physical and chemical properties of the paint material (Koh, 2006). Paint removal mechanism begins after the absorption of laser intensity to the paint layers exceeds the ablation threshold of the material (Poprawe, 2011; Targowski et al., 2009). Abilities of laser beam absorbed by a material surface becomes a fundamental interest in many industries since the laser processing material are influenced by the laser wavelength (λ), laser Fluence (F), Beam Size (BS), Pulse Width (PW) and Repetition Rate (RR), (Brygo et al., 2006; Lawrence et al., 2002; Razab et al., 2014b; Razab et al., 2014e). Increasing of F was increased the removal efficiency of the unwanted layer and contaminants (Bian et al., 2013; Lee et al., 2003; Raciukaitis et al., 2008b; Razab et al., 2014f). However, there
Nd:YAG laser. The experiment was carried out at Medical Physics Laboratory, School of Physics and Microscopy Laboratory, School of Mechanical Engineering, Universiti Sains Malaysia, Penang.
