Accession Number : ADA548319


Title :   An Overview of Ni Base Additive Fabrication Technologies for Aerospace Applications (Preprint)


Descriptive Note : Conference paper preprint


Corporate Author : GENERAL ELECTRIC CO CINCINNATI OH GE AVIATION


Personal Author(s) : English, Christopher L ; Tewari, Sudhir K ; Abbott, David H


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a548319.pdf


Report Date : Mar 2011


Pagination or Media Count : 0


Abstract : The cost of aerospace components is often significantly increased due to the amount of material over and above the finished geometry that must be removed during manufacturing. This results in a substantial conversion cost needed to generate the final component. It is not uncommon to machine away 90% or more of the initial input shape, thereby increasing cost, cycle time and other overhead costs. Additive manufacturing includes an umbrella of technologies that can be used to dramatically reduce the BTF ratio, resulting in lower cost and manufacturing cycle time. An overview of additive manufacturing technologies and their fit into aero engine manufacturing will be presented. Advantages and disadvantages of the technologies will be discussed. Development work will be presented with commonly used aerospace materials. Preliminary mechanical property results and cost modeling will be presented. Near-term equipment and process development needs will be addressed.


Descriptors :   *ENGINE COMPONENTS , *FABRICATION , *SUPERALLOYS , AEROSPACE SYSTEMS , DEPOSITION , ELECTRON BEAM MELTING , LASER APPLICATIONS , MANUFACTURING , MELTING , NICKEL , SINTERING , SYMPOSIA


Subject Categories : Fabrication Metallurgy
      Mfg & Industrial Eng & Control of Product Sys
      Research and Experimental Aircraft
      Unmanned Spacecraft


Distribution Statement : APPROVED FOR PUBLIC RELEASE