Abstract
The laser cutting of high-aspect-ratio (length to width) rectangular blanks from a thick sheet steel is carried out and the temperature and thermal stress fields in the cut sections are examined. The temperature and stress fields are computed using the finite element model and X-ray diffraction (XRD) is used to measure the residual stress levels in the corners of the cut geometry. A scanning electron microscope equipped with an energy dispersive spectroscopy unit is used to examine the morphological and metallurgical changes in the cut section. It is found that the von Mises stress remains high in the region of the cut surfaces and the predicted values of the residual stress closely agree with experimental results. The micrographs reveal that the cut sections are free from cracks.
| Original language | English |
|---|---|
| Pages (from-to) | 63-71 |
| Number of pages | 9 |
| Journal | Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture |
| Volume | 223 |
| Issue number | 1 |
| DOIs | |
| State | Published - 1 Jan 2009 |
Keywords
- Cutting
- Laser
- Residual stress
- Thick samples
ASJC Scopus subject areas
- Mechanical Engineering
- Industrial and Manufacturing Engineering