Scholarlink

<p>This contribution investigates the emissivity of Inconel 718 in the context of laser-based Directed Energy Deposition (DED), focusing on the impact of surface finish variations resultant from additive manufacturing techniques and the challenges it poses when monitoring the process via thermal imaging. We perform directional spectral measurements from 100 <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10765_2025_3577_Article_IEq1.gif" Format="GIF" Height="7" Rendition="HTML" Resolution="72" Type="Linedraw" Width="9" /> </InlineMediaObject> <EquationSource Format="TEX">\(^{\circ }\)</EquationSource> <EquationSource Format="MATHML"><math> <mmultiscripts> <mrow /> <mrow /> <mo>∘</mo> </mmultiscripts> </math></EquationSource> </InlineEquation>C to 900 <InlineEquation ID="IEq2"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10765_2025_3577_Article_IEq1.gif" Format="GIF" Height="7" Rendition="HTML" Resolution="72" Type="Linedraw" Width="9" /> </InlineMediaObject> <EquationSource Format="TEX">\(^{\circ }\)</EquationSource> <EquationSource Format="MATHML"><math> <mmultiscripts> <mrow /> <mrow /> <mo>∘</mo> </mmultiscripts> </math></EquationSource> </InlineEquation>C in high vacuum using a custom-made emissometer and analyze the differences between samples synthesized via casting and laser metal deposition. The data are also treated to obtain total hemispherical emissivity values and to compare them to literature data. Finally, as emissivity is the only input data that can be modified in thermographic cameras to calculate the temperature, we perform a temperature calculation error analysis to clarify the conditions and the emissivity input data under which the infrared cameras should operate in these additive manufacturing processes to make the temperature measurement more reliable.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Experimental Analysis of Emissivity in Inconel 718 for Directed Energy Deposition Temperature Monitoring with Thermal Imaging

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年5月29日

查看全文
  • Jon Gabirondo-López,
  • Telmo Echániz,
  • Iñaki López-Ferreño,
  • Jon Lambarri,
  • Gabriel Alejandro López

摘要

This contribution investigates the emissivity of Inconel 718 in the context of laser-based Directed Energy Deposition (DED), focusing on the impact of surface finish variations resultant from additive manufacturing techniques and the challenges it poses when monitoring the process via thermal imaging. We perform directional spectral measurements from 100 \(^{\circ }\) ∘ C to 900 \(^{\circ }\) ∘ C in high vacuum using a custom-made emissometer and analyze the differences between samples synthesized via casting and laser metal deposition. The data are also treated to obtain total hemispherical emissivity values and to compare them to literature data. Finally, as emissivity is the only input data that can be modified in thermographic cameras to calculate the temperature, we perform a temperature calculation error analysis to clarify the conditions and the emissivity input data under which the infrared cameras should operate in these additive manufacturing processes to make the temperature measurement more reliable.