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

The Korean Society of Mechanical Engineers (대한기계학회)
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A Study on the Correlations Between Ultrasonic Parameters and Fracture Toughness

초음파 파라미터와 파괴인성치의 상관관계에 관한 연구

  • 김정표 (삼성전기 DM사업부) ;
  • 박재실 (성균관대학교 산업설비안전성평가연구센터) ;
  • 배봉국 (성균관대학교 기계공학부) ;
  • 석창성 (성균관대학교 기계공학부)
  • Published : 2005.02.01
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Abstract

In this study the four classes of the thermally aged 1Cr-1Mo-0.25V specimens were prepared using an artificially accelerated aging method. Ultrasonic tests were performed to get the correlation with fracture toughness. The modified theoretical Vary's equation, considering nonlinear response due to material degradation, was proposed for the correlations between ultrasonic parameters and fracture toughness. Experimental results indicate that ultrasonic attenuation coefficient, velocity and nonlinear parameters produce the correlations with fracture toughness and yield strength.

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References

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