Abstract
Laser cutting of rectangular geometry in 2024 aluminum sheet is carried out under high pressure nitrogen assisting gas. Temperature and thermal stress fields are predicted in the cutting region incorporating ABAQUS finite element code. Morphological and elemental changes in the cutting section are analyzed using optical and scanning electron microscopes, and energy dispersive spectroscopy. Surface temperature rise in the vicinity of the cut edges is measured incorporating the thermocouples and the findings are compared with their counterparts obtained from the simulations for the validation purposes. It is found that temperature predictions agree well with the thermocouple data. von Mises stress attains significantly high values in the close region of the corners of the cut edges and mid-thickness of the cutting section along the rectangular geometry. The laser cutting section is free from large asperities such as cracks and sideways burnings; however, local dross attachment is observed at the kerf exit.
| Original language | English |
|---|---|
| Pages (from-to) | 247-256 |
| Number of pages | 10 |
| Journal | Optics and Laser Technology |
| Volume | 64 |
| DOIs | |
| State | Published - Dec 2014 |
Bibliographical note
Funding Information:The authors acknowledge the support of Dean of Scientific Research for funded Project ( SB121012 ), King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia and Gazi University in Turkey .
Keywords
- Laser cutting
- Thermal analysis
- von Mises stress
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering