Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Application of Probabilistic Fracture Mechanics Technique Using Monte Carlo Simulation

몬테카를로 시뮬레이션을 이용한 확률론적 파괴역학 수법의 적용성 검토

  • 이준성 (경기대학교 전자기계공학부) ;
  • 곽상록 (성균관대학교 대학원 기계공학부) ;
  • 김영진 (성균관대학교 기계공학부)
  • Published : 2001.10.01
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Abstract

For major structural components periodic inspections and integrity assessments are needed for the safety. However, many flaws are undetectable because sampling inspection is carried out during in-service inspection. Probabilistic integrity assessment is applied to take into consideration of uncertainty and variance of input parameters arise due to material properties and undetectable cracks. This paper describes a Probabilistic Fracture Mechanics(PFM) analysis based on the Monte Carlo(MC) algorithms. Taking a number of sampling data of probabilistic variables such as fracture toughness value, crack depth and aspect ratio of an initial surface crack, a MC simulation of failure judgement of samples is performed. for the verification of this analysis, a comparison study of the PFM analysis using a commercial code, mathematical method is carried out and a good agreement was observed between those results.

Keywords

References

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