Analysis and validation of laser spot weld-induced distortion

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Description

Laser spot welding is an ideal process for joining small parts with tight tolerances on weld size, location, and distortion, particularly those with near-by heat sensitive features. It is also key to understanding the overlapping laser spot seam welding process. Rather than attempting to simulate the laser beam-to-part coupling (particularly if a keyhole occurs), it was measured by calorimetry. This data was then used to calculate the thermal and structural response of a laser spot welded SS304 disk using the finite element method. Five combinations of process parameter values were studied. Calculations were compared to experimental data for temperature and ... continued below

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10 p.

Creation Information

Knorovsky, G.A.; Kanouff, M.P.; Maccallum, D.O. & Fuerschbach, P.W. December 9, 1999.

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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 11 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
    Place of Publication: Albuquerque, New Mexico

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Description

Laser spot welding is an ideal process for joining small parts with tight tolerances on weld size, location, and distortion, particularly those with near-by heat sensitive features. It is also key to understanding the overlapping laser spot seam welding process. Rather than attempting to simulate the laser beam-to-part coupling (particularly if a keyhole occurs), it was measured by calorimetry. This data was then used to calculate the thermal and structural response of a laser spot welded SS304 disk using the finite element method. Five combinations of process parameter values were studied. Calculations were compared to experimental data for temperature and distortion profiles measured by thermocouples and surface profiling. Results are discussed in terms of experimental and modeling factors. The authors then suggest appropriate parameters for laser spot welding.

Physical Description

10 p.

Notes

OSTI as DE00750036

Medium: P; Size: 10 pages

Source

  • International Conference on Lasers and Electron Optics, San Diego, CA (US), 11/15/1999--11/18/1999

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  • Report No.: SAND--99-2918C
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 750036
  • Archival Resource Key: ark:/67531/metadc712549

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Office of Scientific & Technical Information Technical Reports

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  • December 9, 1999

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • April 6, 2017, 6:39 p.m.

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Knorovsky, G.A.; Kanouff, M.P.; Maccallum, D.O. & Fuerschbach, P.W. Analysis and validation of laser spot weld-induced distortion, article, December 9, 1999; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc712549/: accessed September 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.