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A Study on Failure Analysis of Low Pressure Trubine Blade Using AFM and FEM
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 Title & Authors
A Study on Failure Analysis of Low Pressure Trubine Blade Using AFM and FEM
Hong, Soon-Hyeok; Cho, Seok-Swoo; Joo, Won-Sik;
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 Abstract
Mechanical component has striation with constant width and SEM can estimate fracture type and loading condition. SEM has benefit to fatigue fracture analysis but striation can be observed according to the kind of material and range of crack growth rate and can't. In this case, it needs AFM that can measure 3-dimensional surface profile with resolution of atomic size. In this study. to find fracture reason of torsion-mounted blade in nuclear plant, we estimate the relation between stress intensity factor range and root mean square roughness in 12% Cr steel by AFM and predict in-service loading condition of turbine blade. failure analysis is performed by finite element method and Goodman diagram on torsion-mounted blade.
 Keywords
SEM;AFM;Turbine Blade;FEM;Root Mean Square Roughness;Goodman Diagram;
 Language
Korean
 Cited by
1.
시멘트 분쇄기용 테이블 라이너의 굽힘 피로강도의 실험적 조사,백석흠;이경영;조석수;장득열;주원식;

대한기계학회논문집A, 2007. vol.31. 12, pp.1214-1220 crossref(new window)
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