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


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.


  1. 서상민, 김영진외 3人, 1993, 'CAE기법을 이용한 서스펜션 KNUCKLE의 피로수명 평가,' 한국자동차공학회 춘계학술대회 논문집, pp. 373-378
  2. Dassault Systems, 2000, 'ELFINI, Generative Part & Generative Assembly Structual Analysis,' p. 6
  3. Anderson T.L., 1995, 'Fracture Mechanics,' CRC Press, p. 605
  4. Shimadzu, 1993, 'EHF-EB5-10L形 造作說明書,' 鳥津製作所, pp 54-55
  5. ASTM Standard E647-93, 1994, 'Standard Test Method for Measurement of Fatigue Crack Growth Rates,' ASTM Standards Sec. 3, Vol. 03.01, pp. 591-596
  6. 小寺澤良一, 森時彦, 1977, 'クリ-プき裂傳ぱを支配する破壞力學的因子,' 材料, 第26卷, 第289號, pp.948-954
  7. Fuchs H.O. and Stephens R.I., 1980, 'Metal Fatigue in Engineering,' Willy-inter Science Publication, p. 301
  8. 한국전력공사 원자력연수원, 1995, '터빈,' 예문사, pp. 141-161
  9. 成洛元, 周原植, 1998, '機械票素設計,' 三星實業, pp. 28-29
  10. Jack A. Collins, 1993, 'Failure of Materials in Mechanical Design,' Willy Interscience Publication, pp. 207-213
  11. 한전기공주식회사, 1999, '제3회 터빈 기술 세미나,' 한전기공(주), pp. 141-162
  12. 전재영, 1987, '파괴 및 피로해석을 통한 터어빈 로우터의 운전 수명 계산,' 대한기계학회논문집, 제11권 4호, pp. 537-548
  13. 박성일, 홍재완, 노영길, 2000, 'Scaning Probe Microscopy,' PSIA, pp. 3-15
  14. Masuda, H., Nagashima, N. and Matsuoka, S., 1991, 'In-situ Observation on Metal Surface in Aqueous Solutions with Electrochemical STM,' JSME, Vol. 57, pp. 2270-2277
  15. 제3회 터빈 기술 세미나