A new model of percussion laser drilling
by N.D. Pandey, H.S. Shan, T. Mohandas
International Journal of Computer Applications in Technology (IJCAT), Vol. 26, No. 4, 2006

Abstract: 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.

Online publication date: Wed, 30-Aug-2006

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Computer Applications in Technology (IJCAT):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com