Analysis on pore generation in directed energy deposition using a chamber with a cooling system

Yusuke Sugiura, Ryo Koike, Yasuhiro Kakinuma, Masaki Kondo

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Directed energy deposition (DED), one of the additive manufacturing processes available for metals, is being employed in various industries. However, pore generation still remains a fatal problem that deteriorates the mechanical strength in DED products. In this study, analytical evaluation on pore generation in DED is conducted by introducing a special chamber. By classifying residual failures inside produced parts, pore generation is suppressed along with its cause. Experimental results show that the porosity rate can be drastically reduced in DED products by filling the chamber with argon, increasing the cooling rate, and applying re-melting process during deposition.

Original languageEnglish
Title of host publicationAIAA Scitech 2020 Forum
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105951
Publication statusPublished - 2020
EventAIAA Scitech Forum, 2020 - Orlando, United States
Duration: 2020 Jan 62020 Jan 10

Publication series

NameAIAA Scitech 2020 Forum
Volume1 PartF


ConferenceAIAA Scitech Forum, 2020
Country/TerritoryUnited States

ASJC Scopus subject areas

  • Aerospace Engineering


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