A finite element model to predict the ablation depth in pulsed laser ablation

Effect of metal vaporization behavior on keyhole-mode surface morphology of selective laser melted composites using different protective atmospheres

“…As a result, for the keyhole-mode SLM process, it seems that Ar protective atmosphere has the stabilization ability to significantly decrease the keyhole molten pool fluctuation and, therefore a dense SLM-processed part will be obtained. It is remarked that this simulation result has a similar trend with experimental work conducted by Wang and Sercombe [23]. It can be reasonably concluded that the present mathematical model has the capacity to predict the residual porosity defect induced by the molten pool instability in the keyhole-mode SLM process.…”

“…The thermal physical properties of AlSi10Mg and TiC materials are depicted in Fig. 2 [22,23]. The SLM processing parameters depending on our previous research (P = 160 W, V = 300 mm/s) are chosen and shown in Table 1.…”

Laser Beam MicroMachining (LBMM) – A review

“…It was observed that the amplitude of stress and strain at the notch root of laser prepared tube is higher than EDM-prepared tube and thus it is more precise technique to study the crack growth phenomenon in materials. Vasantgadkar et al [184] developed 2-D finite element model of laser matter interaction for ns pulse duration by considering the dynamic absorptivity and absorption coefficient of the workpiece. The effect of plasma shielding and temperature dependent material properties has also been included to enhance the authenticity of the model.…”

A Review of Simulation Methods of Laser Matter Interactions Focused on Nanosecond Laser Pulsed Systems

“…Recently, models based on FEM dealing with laser ablation have been published [97][98][99][100][101][102] and their main concepts are further discussed in Sec. 6 of this paper.…”