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http://dx.doi.org/10.3795/KSME-A.2013.37.7.857

Stress Modeling of the Laser Drilling Process in Carbon Steel  

Lee, Wooram (Dept. of Mechanical and Automotive Engineering, Seoul Nat'l Univ. of Science and Technology)
Kim, Joohan (Dept. of Mechanical and Automotive Engineering, Seoul Nat'l Univ. of Science and Technology)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.37, no.7, 2013 , pp. 857-864 More about this Journal
Abstract
A laser machining process has been applied in many manufacturing fields and it provides an excellent energy control for treating materials. However, a heat effect during laser machining can deteriorate material properties. Specifically, a thermally induced stress can be a problem in laser-machined structures on a metal surface. In this study, temperature and stress on cold-rolled carbon steel sheet machined with laser hole drilling were explored in an experimental approach and a numerical method. Stresses by temperature gradients inside the materials were generated in fast cooling. The stresses were measured by using a hole-drilling method and the material properties of carbon steel (SCP1-S) were obtained in the experiment. It was found that the stress predicted from the numerical analysis was in agreement with the stresses measured by using the hole-drilling method. The analysis can be applied for evaluating structure characteristics machined with a laser.
Keywords
Topology Laser Drilling; Hole-Drilling Method; Stress;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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