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Material Characterization of Lock Plate Using Guided Wave

유도 초음파를 이용한 락 플레이트 물성 평가

  • 이재선 (부산대학교 대학원 기계공학부) ;
  • 조윤호 (부산대학교 기계공학부) ;
  • 정경식 (부산대학교 대학원 기계공학부)
  • Published : 2009.04.01

Abstract

Presented in this paper is a new experimental technique to measure material properties of lock plate of gas turbine plants by using ultrasonic guided wave. In comparison with the mechanical destructive testings, material characterization of the Inconel x-750 was nondestructively carried out in a more efficient manner to discriminate the change in elastic moduli and the poisson's ratio attributed to the variation of heat treatment condition. The proposed technique shows a satisfactory feasibility via the comparative experiments with the imported lock plate specimens. It is also expected that the guided wave technique can cover a longer and wider range as a new cost-&-time-saving inspection tool due to the interaction with a greater part of specimen, compared to a conventional local point-by-point scheme.

Keywords

Guided Wave;Inconel x-750;Dispersion Curve

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