Ultrasound Thermography Technique for Detecting Micro Defects in Vehicle Engine Block

자동차 엔진블럭의 미세크랙 검출을 위한 초음파 서모그래피 기법에 관한 연구

  • Kim, Sung Hyun (Dept. of Advanced Parts and Materials Engineering, Chosun Univ.) ;
  • Kim, Jae Yeol (Dept. of Mechatronics Engineering, Chosun Univ.) ;
  • Choi, Seung Hyun (Dept. of Advanced Parts and Materials Engineering, Chosun Univ.)
  • 김성현 (조선대학교 첨단부품소재공학과) ;
  • 김재열 (조선대학교 메카트로닉스공학과) ;
  • 최승현 (조선대학교 첨단부품소재공학과)
  • Received : 2012.07.10
  • Accepted : 2013.01.25
  • Published : 2013.04.01


An infrared thermography technique can be used to inspect a large area simultaneously and to detect defects such as cracks or delaminations in real time. Infrared thermography is a technique in which visual images are formed from the infrared range from subjects according to their thermal radiation. The molecules of all objects are disturbed by heat, and the molecular motion becomes more active when the temperature rises and less active when the temperature falls. In this study, the applicability and feasibility of ultrasound thermography for detecting defects in an engine block, which is a key component in the automobile industry, were verified. A nondestructive reliability test was conducted to study the defects, after which the results were analyzed.


Nondestructive Evaluation;Engine Block;Ultrasound Thermography


Supported by : 한국연구재단


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