Keyhole formation and power deposition in Nd:YAG laser spot welding

@inproceedings{Jouvard2001KeyholeFA,
  title={Keyhole formation and power deposition in Nd:YAG laser spot welding},
  author={Jean-Marie Jouvard and K. Girard and Olivier Perret},
  year={2001}
}
The purpose of this work is to understand keyhole formation observed during pulse Nd:YAG laser welding. An analysis of the evolution of the keyhole geometry during a laser pulse was carried out by radiography x-ray flash, for tantalum and a titanium alloy target. From the images obtained by x-ray radiography, we determined the evolution of the geometry of the keyhole (depth and width) during the laser pulse. The keyhole appears after a delay, and increases linearly. We compare the measured… CONTINUE READING