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SYSTEMS AND METHODS FOR MEASURING RADIATED THERMAL ENERGY DURING AN ADDITIVE MANUFACTURING OPERATION

  • US 20190255654A1
  • Filed: 02/21/2019
  • Published: 08/22/2019
  • Est. Priority Date: 02/21/2018
  • Status: Active Grant
First Claim
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1. An additive manufacturing method, comprising:

  • identifying spectral peaks associated with a batch of powder;

    selecting a first wavelength and a second wavelength spaced apart from the first wavelength, the first wavelength and the second wavelength being offset from the identified spectral peaks;

    generating a plurality of scans of an energy source across a layer of the batch of powder disposed upon a build plane during an additive manufacturing operation;

    measuring an amount of energy radiated from the build plane at the first wavelength;

    measuring an amount of energy radiated from the build plane at the second wavelength;

    determining variations in temperature of an area of the build plane traversed by the plurality of scans based upon a ratio of energy radiated at the first wavelength to energy radiated at the second wavelength;

    determining that the variations in temperature are outside a threshold range of values; and

    thereafter, adjusting subsequent scans of the energy source across or proximate the area of the build plane.

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