Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Quantitative Nondestructive Evaluation of Bonded Joints utilizing Pulse-Echo Ultrasonic Test

펄스-에코법을 이용한 접착접합 시험편의 정량적 비파괴 평가

  • 오승규 (숭실대학교 기계공학과 대학원) ;
  • 황영택 (삼척대학교 정밀기계공학과) ;
  • 이원 (숭실대학교 기계공학과)
  • Published : 2003.03.01
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Abstract

The pulse-echo method is one of the most widely used ultrasonic techniques for application of nondestructive evaluation. Particularly, quantitative nondestructive evaluation of defects has been considered more important to assure the reliability and the safety of structure. Frequency energy in adhesive joints is based on the ultrasonic wave analysis. The attenuation coefficient upon wave amplitude and the frequency energy that is expressed in the term of wave pressure amplitude were utilized for the primary wave experiment. By means of a control experiment, it was confirmed that the variation of the frequency energy in adhesive joints depends on transition by stress variation. In this paper, the ultrasonic characteristics were measured for single lap joint and Double Cantilever Beam specimen with different fracture modes that was subjected to stress. Consequently, the data that was obtained from the adhesive specimen was analytically compared to the fracture mechanics parameter

Keywords

References

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