C-19 ガスタービン吸気冷却噴霧ミスト衝突による圧縮機動翼材のエロージョンと損傷メカニズム(材料,一般講演)

書誌事項

タイトル別名
  • C-19 Erosion mechanism of compressor blades caused by water mist droplets using inlet fogging cooling system in gas turbine

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説明

Some mechanical parts may have heavy erosion damages on the surface by liquid droplet impingement, and also gas turbine compressor 1st stage blade has possibly same damages by water mist droplets using inlet fogging cooling system in its suction duct. This paper describes the evaluation of erosion characteristic using compressor material test pieces with several conditions of water mist attack at the mock-up testing, and the surface of erosion material could be observed in detail using SEM by erosion periodic time. As the result, erosion process by water mist droplet was found to be the fatigue fracture phenomena due to further observation of erosion surface from incubation period at the beginning to final steady period of erosion. Furthermore, it is verified that erosion forms peculiar shape on the surface that have many pits strongly corresponds to approximate 90% Mean Volume Diameter at the stage of final steady period. Also it is clarified that cavitation-erosion can be the dominant phenomena on the erosion process grown toward depth direction.

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詳細情報 詳細情報について

  • CRID
    1572824502698417920
  • NII論文ID
    110009865331
  • NII書誌ID
    AN10255898
  • ISSN
    09191941
  • 本文言語コード
    ja
  • データソース種別
    • CiNii Articles

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