Transient Model for Keyhole During Laser Welding

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Description

A novel approach to simulating the dominant dynamic processes present during concentrated energy beam welding of metals is presented. A model for transient behavior of the front keyhole wall is developed. It is assumed that keyhole propagation is dominated by evaporation recoil-driven melt expulsion from the beam interaction zone. Results from the model show keyhole instabilities consistent with experimental observations of metal welding, metal cutting and ice welding.

Physical Description

9 p.

Creation Information

Bragg, W.D.; Damkroger, B.; Kempka, S. & Semak, V.V. March 5, 1999.

Context

This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 48 times . More information about this article can be viewed below.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM, and Livermore, CA (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

A novel approach to simulating the dominant dynamic processes present during concentrated energy beam welding of metals is presented. A model for transient behavior of the front keyhole wall is developed. It is assumed that keyhole propagation is dominated by evaporation recoil-driven melt expulsion from the beam interaction zone. Results from the model show keyhole instabilities consistent with experimental observations of metal welding, metal cutting and ice welding.

Physical Description

9 p.

Notes

OSTI as DE00004251

Medium: P; Size: 9 pages

Subjects

Source

  • Journal Name: Applied Physics Letters; Other Information: Submitted to Applied Physics Letters

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  • Report No.: SAND99-0552J
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 4251
  • Archival Resource Key: ark:/67531/metadc687420

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Creation Date

  • March 5, 1999

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

Description Last Updated

  • April 11, 2017, 8:10 p.m.

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Bragg, W.D.; Damkroger, B.; Kempka, S. & Semak, V.V. Transient Model for Keyhole During Laser Welding, article, March 5, 1999; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc687420/: accessed September 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.