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- Title
Evaluation of speed of melt evacuation in the technology of laser cutting of metals by the optical correlation method.
- Authors
Dubrov, A.; Zavalov, Yu.; Dubrov, V.
- Abstract
A multichannel pyrometer was used to determine the speed of melt evacuation from an irradiated zone in laser-cutting technology with auxiliary gas. Local pulsations of brightness temperature were measured in four areas of ∼0.1 mm in diameter each spaced by 0.6 mm along the cutting front. A method is described for measuring the displacement rate of temperature heterogeneities during melt motion by mutual correlations of brightness-temperature pulsations calculated in neighboring areas. The necessity of preliminary frequency filtration of the measurement data may be due to propagation of a nonlinear wave in the melt on a metal surface under the impact of a gas jet.
- Subjects
LASER beam cutting; METAL cutting; OPTICAL correlation; PYROMETERS; METALLIC surfaces; IMPACT (Mechanics)
- Publication
Technical Physics Letters, 2014, Vol 40, Issue 6, p491
- ISSN
1063-7850
- Publication type
Article
- DOI
10.1134/S1063785014060042