Finite-difference time-domain simulation of laser beam absorption in fully penetrated keyholes
Cited 0 times inCited 0 times in
- Finite-difference time-domain simulation of laser beam absorption in fully penetrated keyholes
- Deng, Chun; Ki, Hyungson
- Issue Date
- AMER INST PHYSICS
- JOURNAL OF APPLIED PHYSICS, v.114, no.16, pp.164901 -
- Accurate predictions of laser beam absorptance and how laser beam energy is distributed on a keyhole surface are arguably the most important but challenging tasks in the study of laser keyhole welding. In this article, laser interaction with fully penetrated keyholes has been studied by solving the Maxwell equations for electrodynamics using the finite-difference time-domain method with the Drude model for metals. Based on the experimental observations of Fabbro [J. Phys. D: Appl. Phys. 38, 1881-1887 (2005)], the keyhole is simplified as a tilted cylinder, and we have extensively investigated laser absorption phenomena considering three materials (Fe, Sn, and Al), three beam polarizations (two linear and circular), two laser beam wavelengths (1.06 μm and 10.6 μm), and six keyhole tilting angles (0°, 10°, 20°, 30°, 40°, and 45°). To the best of the authors' knowledge, this is the first electrodynamic simulation of a laser manufacturing process and reveals some interesting findings concerning laser beam absorption characteristics that can be only obtained by full electrodynamic simulations.
- ; Go to Link
- Appears in Collections:
- MNE_Journal Papers
- Files in This Item:
can give you direct access to the published full text of this article. (UNISTARs only)
Show full item record
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.