TY - JOUR
T1 - On the modelling and experimental study of CO2 laser ablation on resin-bond diamond grinding wheels: Understanding the effect of processing parameters on the time-dependent temperature field
AU - Xie, Ke Ge
AU - Rushworth, Adam George Antrum
AU - Chen, Hao
AU - Li, Jinyi
PY - 2024/8/30
Y1 - 2024/8/30
N2 - The need for the precise dressing of diamond abrasive tools by laser has been highly emphasised but determining controllable material removal strategies for precise laser processing remains challenging due to the complex interaction between the composite abrasive materials and the laser beam. To fill this gap, an innovative simulation model pertaining to the laser ablation process has been devised to study the temporal evolution of the temperature field distribution within the ablation zone during processing, alongside monitoring the alterations in ablation depth along the feed direction. The laser spot focus size and the cross-section laser energy intensity distribution along the beam propagation direction, as well as the dynamic, unsteady-state heat conduction and convection, are considered in this model. Based on the simulation results, the ablation law regarding temperature field distribution and ablation depth variation with laser power and feed rate is revealed. It is shown that the laser power has a limited impact on the shape of temperature field distribution, but the core temperature of the heat-affected zone increases with laser power. The feed rate affects mainly the distribution range of the heat-affected zone and the range shrinks with the feed rate. It is revealed that a higher laser power with a matched higher feed rate is highly expected to optimise the ablation. Finally, the simulation results are experimentally validated and reasonable agreements are obtained. The work provides numerical and experimental evidence to evaluate the time-dependent temperature distribution during the laser ablation process.
AB - The need for the precise dressing of diamond abrasive tools by laser has been highly emphasised but determining controllable material removal strategies for precise laser processing remains challenging due to the complex interaction between the composite abrasive materials and the laser beam. To fill this gap, an innovative simulation model pertaining to the laser ablation process has been devised to study the temporal evolution of the temperature field distribution within the ablation zone during processing, alongside monitoring the alterations in ablation depth along the feed direction. The laser spot focus size and the cross-section laser energy intensity distribution along the beam propagation direction, as well as the dynamic, unsteady-state heat conduction and convection, are considered in this model. Based on the simulation results, the ablation law regarding temperature field distribution and ablation depth variation with laser power and feed rate is revealed. It is shown that the laser power has a limited impact on the shape of temperature field distribution, but the core temperature of the heat-affected zone increases with laser power. The feed rate affects mainly the distribution range of the heat-affected zone and the range shrinks with the feed rate. It is revealed that a higher laser power with a matched higher feed rate is highly expected to optimise the ablation. Finally, the simulation results are experimentally validated and reasonable agreements are obtained. The work provides numerical and experimental evidence to evaluate the time-dependent temperature distribution during the laser ablation process.
KW - Modelling
KW - CO Laser
KW - Diamond grinding wheels
KW - Temperature field distribution
U2 - 10.1016/j.jmapro.2024.07.007
DO - 10.1016/j.jmapro.2024.07.007
M3 - Article
SN - 1526-6125
VL - 124
SP - 1471
EP - 1484
JO - Journal of Manufacturing Processes
JF - Journal of Manufacturing Processes
ER -