Equation icon  Energy density of a laser beam

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Resource type: Equation
Description: In materials processing, the above equation describes the energy density of a laser beam (also known as beam exposure). At high enough energy densities lasers can be used to cut through sheet metals, weld materials together, sinter powders together to form solids, etc.

TeX format: {E_{\rho} = \frac{2P}{\pi r V}}

Eρ {E_{\rho}} = laser energy density (J.m-2) {J.m^{-2}}
P {P} = laser power (W) {W}
r {r} = beam radius (m) {m}
V {V} = scan velocity (m.s-1) {m.s^{-1}}

Keywords: rapid prototyping • energy • density • manufacturing • processing • laser • beam • sintering • melting • cutting
Categories: Science approaches
Processes > Shaping > Machining
Processes > Shaping > Powder methods
Processes > Shaping > Rapid prototyping
Processes > Thermal treatments > Sintering
Applications > Manufacturing & industry
Properties > Electrical, magnetic & optical > Optical
Created by: The University of Liverpool
License: This resource is released under the Creative Commons Attribution license (2.0 UK: England & Wales).
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Date created: 18 August 2010
Date added: 14 September 2010
Resource ID: 3213