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1. US20100288052 - METHOD AND DEVICE FOR IMPLEMENTING SIMULATED TEST OF CENTRIFUGAL STRESS IN TURBINE BLADE

官庁 アメリカ合衆国
出願番号 12730416
出願日 24.03.2010
公開番号 20100288052
公開日 18.11.2010
公報種別 A1
IPC
G01M 13/00
G物理学
01測定;試験
M機械または構造物の静的または動的つり合い試験;他に分類されない構造物または装置の試験
13機械部品の試験
出願人 TANAKA TAKESHI
ASAKA HARUHIKO
MICHINISHI JUNYA
MIYAJIMA KEIICHIRO
MORI KAZUSHI
発明者 Tanaka Takeshi
Asaka Haruhiko
Michinishi Junya
Miyajima Keiichiro
Mori Kazushi
代理人 WENDEROTH, LIND &; PONACK, L.L.P.
優先権情報 2009115822 12.05.2009 JP
発明の名称
(EN) METHOD AND DEVICE FOR IMPLEMENTING SIMULATED TEST OF CENTRIFUGAL STRESS IN TURBINE BLADE
要約
(EN)

The object is to provide a method and device to detect internal defect in the weld overlaid portion of erosion resistant material in the border portion between the blade profile and the shroud of a turbine blade with high accuracy by a static test method for an individual turbine blade applying a resultant pressing force, corresponding to centrifugal force and untwisting force of the turbine blade 10 in operation of the turbine, to the shroud 12 with installing the blade root 18 of the turbine blade 10 to the blade root retainer 20 and applying a force in the direction of centrifugal force on the blade root 18 from outside of the blade root retainer 20 to eliminate backlash between the blade root 18 and blade root retainer 20, retaining securely the shroud 12 on the side opposite to the portion which is applied the pressing force, and implementing simulated test of centrifugal stress in the weld-overlaid portion by applying the resultant pressing force, corresponding to centrifugal force and untwisting force of the turbine blade 10 in operation of the turbine, to the shroud 12.