A new model of percussion laser drilling

被引：1
|
作者：
Pandey, N. [1 ]
Shan, H. [2 ]
Mohandas, T. [1 ]
机构：
[1] Def Met Res Lab, Hyderabad 500058, AP, India
[2] Indian Inst Technol Roorkee, Dept Mech & Ind Engn, Roorkee 247667, Uttar Pradesh, India
来源：
INTERNATIONAL JOURNAL OF COMPUTER APPLICATIONS IN TECHNOLOGY | 2006年 / 26卷 / 04期
关键词：
percussion laser drilling; model; fracture; material removal; finite element method; Nd: YAG laser; nickel based superalloy; SUPERNI; 263A;
D O I：
10.1504/IJCAT.2006.010767
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
Manufacturing industries in strategic and other hi-tech areas are increasingly using the percussion mode of laser drilling for component development. In this paper, the optothermal effects of laser-metal interaction are analysed from a modelling viewpoint. A model of percussion laser drilling is presented that considers melt displacement/ fracture in the semi-solid or solid state together with material removal by melt expulsion and evaporation. Predicted von Mises stresses (due to thermal strain in vicinity of the hole) exceed the tensile strength of the workpiece material (SUPERNI 263A) which are likely to displace/fracture material in vicinity of the hole. The model agrees well with our experimental findings.
引用
收藏
页码：218 / 232
页数：15
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