The study carried out showed the influences of the operational parameters on the weldability
and the mechanical resistance of the assembled ABS plates. The adopted experimental strategy, based
on the method of the experimental designs, made it possible to highlight in an effective way the fields
of weldability. One could note that the laser power used is the most important parameter on the
mechanical resistance and the weldability is assured in a narrow interval of power laser. An important
clamping pressure and two laser passages are useful to improve the performances of the weld strength.
The correlation between the experimental and simulated results gives the possibility to
understand some of the phenomena that take place during the polymers laser welding. In the same time,
the proposed numerical model proved its capabilities, the indicated parameters domains being validated
by the experimental results. Thus the model is an efficient tool in determining the weldability of
polimeric materials contributing to a significant reduction of time and costs with the experimental
exploration, this one being made only for finding the optimal values