Experimental and numerical study of the emissivity of rolled aluminum

Menchón, Mireia Sainz; López, Jon Gabirondo; Arrieta, Isabel; Echániz, T.; López, G.A.

doi:10.1016/j.infrared.2022.104380

Infrared Physics & Technology

2022

DOI: 10.1016/j.infrared.2022.104380

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Experimental and numerical study of the emissivity of rolled aluminum

Mireia Sainz Menchón

Jon Gabirondo López

Isabel Arrieta

et al.

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Cited by 4 publications

References 31 publications

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Knowing the spectral directional emissivity of 316L and AlSi10Mg PBF-LB/M surfaces: gamechanger for quantitative in situ monitoring

Becker,

Stark,

Arduini

et al. 2024

Prog Addit Manuf

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For a deep process understanding of the laser powder bed fusion process (PBF-LB/M), recording of the occurring surface temperatures is of utmost interest and would help to pave the way for reliable process monitoring and quality assurance. A notable number of approaches for in-process monitoring of the PBF-LB/M process focus on the monitoring of thermal process signatures. However, due to the elaborate calibration effort and the lack of knowledge about the occurring spectral directional emissivity $${{\varepsilon }^{\prime}}_{\lambda }$$ ε ′ λ , only a few approaches attempt to measure real temperatures. In this study, to gain initial insights into $${{\varepsilon }^{\prime}}_{\lambda }$$ ε ′ λ occurring in the PBF-LB/M process, measurements on PBF-LB/M specimens and metal powder specimens were performed for higher temperatures up to T = 1290 °C by means of the emissivity measurement apparatus (EMMA) of the Center for Applied Energy Research (CAE, Wuerzburg, Germany). Also, measurements at ambient temperatures were performed with a suitable measurement setup. Two different materials—stainless steel 316L and aluminum AlSi10Mg—were examined. The investigated wavelength λ ranges from the visible range ($${\lambda }_{VIS}$$ λ VIS = 0.40–0.75 µm) up to the infrared, λ = 20 µm. The influence of the following factors were investigated: azimuth angle φ, specimen temperature TS, surface texture as for PBF-LB/M surfaces with different scan angles α, and powder surfaces with different layer thicknesses $$t$$ t .

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Knowing the spectral directional emissivity of 316L and AlSi10Mg PBF-LB/M surfaces: gamechanger for quantitative in situ monitoring

Becker,

Stark,

Arduini

et al. 2024

Prog Addit Manuf

View full text Add to dashboard Cite

show abstract

Simultaneous measurement of normal spectral emissivity and temperature of materials with low thermal conductivity

Xia

Sun

et al. 2023

Experimental Thermal and Fluid Science

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Study of the roughness effect on the normal spectral emissivity of GH3044

Zhang

Chen

et al. 2023

Infrared Physics & Technology

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Experimental and numerical study of the emissivity of rolled aluminum

Cited by 4 publications

References 31 publications

Knowing the spectral directional emissivity of 316L and AlSi10Mg PBF-LB/M surfaces: gamechanger for quantitative in situ monitoring

Knowing the spectral directional emissivity of 316L and AlSi10Mg PBF-LB/M surfaces: gamechanger for quantitative in situ monitoring

Simultaneous measurement of normal spectral emissivity and temperature of materials with low thermal conductivity

Study of the roughness effect on the normal spectral emissivity of GH3044

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