Laser pulse shaping for additive manufacturing

DeMuth, James A.; Bayramian, Andrew J.; Duoss, Eric B.; Kuntz, Joshua D.; Spadaccini, Christopher M.

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A - human necessities
A01 - agriculture
A21 - baking
A22 - butchering
A23 - foods or foodstuffs
A24 - tobacco
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A42 - headwear
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B32 - layered products
B33 - additive manufacturing technology
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Title: Laser pulse shaping for additive manufacturing

Abstract

The present disclosure relates to an apparatus for additively manufacturing a product in a layer-by-layer sequence, wherein the product is formed using powder particles deposited on an interface layer of a substrate. A laser generates first and second beam components. The second beam component has a higher power level and a shorter duration than the first beam component. A mask creates a 2D optical pattern in which only select portions of the second beam components can irradiate the powder particles. The first beam component heats the powder particles close to a melting point, where the particles experience surface tension forces relative to the interface layer. While the particles are heated, the second beam component further heats the particles and also melts the interface layer before the surface tension forces can act on and distort the particles, enabling the particles and the interface layer are able to bond together.

Inventors:: DeMuth, James A.; Bayramian, Andrew J.; Duoss, Eric B.; Kuntz, Joshua D.; Spadaccini, Christopher M.

Issue Date:: 2022-12-13

Research Org.:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1986939

Patent Number(s):: 11524458

Application Number:: 16/538,152

Assignee:: Lawrence Livermore National Security, LLC (Livermore, CA)

DOE Contract Number:: AC52-07NA27344

Resource Type:: Patent

Resource Relation:: Patent File Date: 08/12/2019

Country of Publication:: United States

Language:: English

Citation Formats


                    DeMuth, James A., Bayramian, Andrew J., Duoss, Eric B., Kuntz, Joshua D., and Spadaccini, Christopher M. Laser pulse shaping for additive manufacturing.  United States: N. p., 2022. 
        Web.

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                    DeMuth, James A., Bayramian, Andrew J., Duoss, Eric B., Kuntz, Joshua D., & Spadaccini, Christopher M. Laser pulse shaping for additive manufacturing.  United States.

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                    DeMuth, James A., Bayramian, Andrew J., Duoss, Eric B., Kuntz, Joshua D., and Spadaccini, Christopher M. Tue .  
        "Laser pulse shaping for additive manufacturing".  United States.  https://www.osti.gov/servlets/purl/1986939.

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@article{osti_1986939,

  title        = {Laser pulse shaping for additive manufacturing},

  author       = {DeMuth, James A. and Bayramian, Andrew J. and Duoss, Eric B. and Kuntz, Joshua D. and Spadaccini, Christopher M.},

  abstractNote = {The present disclosure relates to an apparatus for additively manufacturing a product in a layer-by-layer sequence, wherein the product is formed using powder particles deposited on an interface layer of a substrate. A laser generates first and second beam components. The second beam component has a higher power level and a shorter duration than the first beam component. A mask creates a 2D optical pattern in which only select portions of the second beam components can irradiate the powder particles. The first beam component heats the powder particles close to a melting point, where the particles experience surface tension forces relative to the interface layer. While the particles are heated, the second beam component further heats the particles and also melts the interface layer before the surface tension forces can act on and distort the particles, enabling the particles and the interface layer are able to bond together.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2022},

  month        = {12}

}

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