Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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A Study on Failure Analysis of Low Pressure Trubine Blade Using AFM and FEM

AFM과 FEH을 이용한 저압 터빈 블레이드의 파손해석에 관한 연구

  • Hong, Soon-Hyeok (Dept.of Mechanicals Engineering, Graduate School of Donga University) ;
  • Cho, Seok-Swoo (Dept.of Mechanical Precision Machine Automotive Engineering, Samcheok National University) ;
  • Joo, Won-Sik (Dept.of Mechanicals Industry System Engineering, Donga University)
  • 홍순혁 (동아대학교 대학원 기계공학과) ;
  • 조석수 (삼척대학교 기계·정밀기계·자동차공학부) ;
  • 주원식 (동아대학교 기계산업시스템공학부)
  • Published : 2001.11.01
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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.

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References

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