منابع مشابه
Experimental Investigation on Gas Laser Cutting
Laser beam cutting (LBC) is a most predominantly used non-traditional cutting process to cut desired shapes out of sheet metals, plates, sections and boxes with greater accuracy at least time. The criticality in this process is its complexity in cutting non ferrous materials due to their lesser absorption rate of the laser beam. Continuous wave CO2 laser and pulsed Nd:YAG laser are the most com...
متن کاملA simple model for laser drilling
A simple mathematical model of laser drilling is proposed. Assuming axi-symmetry of the process around the axis of the laser beam, a one-dimensional formulation is obtained after cross-sectional averaging. The novelty of the approach relies on the fact that even after dimension reduction, the shape of the hole can still be described. The model is derived, implemented and validated for drilling ...
متن کاملInvestigation of influential factors on well temperature for gas-liquid two-phase flow in under-balanced drilling operation
Analysis of the drilling fluid temperature due to heat transfer of drilling fluid with the formation in under-balanced drilling operation is the main objective of this study. Gas-liquid two-phase flow model considering thermal interaction with the formation is used to numerically simulate a well with real dimensions. In the present study, the continuity, momentum, and energy equations are devel...
متن کاملInvestigation of the Nd:YAG laser percussion drilling process using high speed filming
1. Abstract Modem aerospace gas turbines require large numbers of small diameter holes « 1 mm) to provide cooling in the turbine blades, nozzle guide vanes, combustion chambers and afterburner. A typical modem engine will have 1 00,000 such holes. Such holes can be successfully produced by laser trepanning, but this is a relatively slow process compared with laser percussion drilling. With perc...
متن کاملInvestigation of the Influence of Power Density and Frequency on Laser Drilling in Metal Samples
To study the influence of the main parameters on the process of laser drilling in various samples from aluminium, copper and silver, numerical experiments are carried out with specialized software TEMPERATURFEL3D, working in MATLAB. The results refer to the fiber laser and CuBr laser modern laser, whose applications in various technological processes are still being explored. The dependences of...
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ژورنال
عنوان ژورنال: Journal of Laser Applications
سال: 2007
ISSN: 1042-346X,1938-1387
DOI: 10.2351/1.2567844