Numerical investigation of the efffect of the pulse format on drilling performance Available to Purchase

Numerical simulation for pulsed laser drilling is carried out to develop the fundamental understanding of the high power density laser process. The model used in this study adopted mathematical scheme called the level-set technique to capture the transient evolution of liquid-vapour interface during the laser-material interaction. The model has the capabilities of simulating major laser-material interaction physics such as heat transfer, vaporization, fluid flow and multiple reflections. Cooling and solidification phenomenon between successive laser pulses were also modeled to simulate the pulsed laser process. This study presents the influence of different pulse formats on drilling performance indicated by process time, hole geometry and recast layer thickness.