Using spectrally resolved thermal images, the authors retrieve both temperature and spectral emissivity during laser powder bed fusion, achieving ±28 K accuracy against melting-point benchmarks and correlating temperature signatures with porosity.
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Radiometric Temperature Measurement for Metal Additive Manufacturing via Temperature Emissivity Separation
Using spectrally resolved thermal images, the authors retrieve both temperature and spectral emissivity during laser powder bed fusion, achieving ±28 K accuracy against melting-point benchmarks and correlating temperature signatures with porosity.