Proceedings of the KSME Conference (대한기계학회:학술대회논문집)

The Korean Society of Mechanical Engineers (대한기계학회)
권호 표지

Evaluation of Degradation of 2.25Cr-1Mo Materials using the Nonlinear Acoustic Effect

초음파 비선형성을 이용한 2.25Cr-1Mo 강의 열화도 평가

  • 최윤호 (한양대학교 대학원 정밀기계공학과) ;
  • 김현묵 (한양대학교 대학원 정밀기계공학과) ;
  • 장경영 (한양대학교 기계공학부) ;
  • 박익근 (서울산업대학교 기계공학과)
  • Published : 2001.11.01
Download PDF
⟨ Previous Next ⟩

Abstract

Nonlinear acoustic effect has been considered as an effective tool for the evaluation of material degradation. In this paper, the applicability of nonlinear acoustic effect to the evaluation of degradation of 2.25Cr-1Mo steel is investigated. Firstly, a number of 2.25Cr-1Mo steel samples were heat-treated, and their damage mechanism was examined. Secondly, Ultrasonic nonlinear parameter was measured. Nonlinear acoustic parameter was found to be clearly sensitive to the material degradation.

Keywords