Influence of surface microstructure on thermal damage characteristics of metal material
Abstract
A thermal damage analysis model of metal components with surface microstructure under laser irradiation is established. In order to ensure the influence law, the surface microstructure of metal component is simplified to periodic patterns. The light field and temperature distribution on the metal surface are calculated. And then the damage threshold of the component with different surface structure is calculated. The results show that the damage threshold of metal surface decreases with the increasing of the microstructure period. At the same structural period, the damage threshold of the linear structure is lower than which of the punctate structure.
- Publication:
-
Optik
- Pub Date:
- March 2020
- DOI:
- 10.1016/j.ijleo.2020.164296
- Bibcode:
- 2020Optik.20664296W
- Keywords:
-
- Surface microstructure;
- Light field modulation;
- Thermal damage threshold