Nuclear Engineering and Technology

  • 제39권5호
  • /
  • Pages.637-646
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  • 2007
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  • 1738-5733(pISSN)
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  • 2234-358X(eISSN)
한국원자력학회 (Korean Nuclear Society)
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DEFECT DETECTION WITHIN A PIPE USING ULTRASOUND EXCITED THERMOGRAPHY

  • Cho, Jai-Wan (Nuclear Robotics Lab., Korea Atomic Energy Research Institute) ;
  • Seo, Yong-Chil (Nuclear Robotics Lab., Korea Atomic Energy Research Institute) ;
  • Jung, Seung-Ho (Nuclear Robotics Lab., Korea Atomic Energy Research Institute) ;
  • Kim, Seung-Ho (Nuclear Robotics Lab., Korea Atomic Energy Research Institute) ;
  • Jung, Hyun-Kyu (Nuclear Robotics Lab., Korea Atomic Energy Research Institute)
  • 발행 : 2007.10.30
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초록

An UET (ultrasound excited thermography) has been used for several years for a remote non-destructive testing in the automotive and aircraft industry. It provides a thermo sonic image for a defect detection. A thermograhy is based On a propagation and a reflection of a thermal wave, which is launched from the surface into the inspected sample by an absorption of a modulated radiation. For an energy deposition to a sample, the UET uses an ultrasound excited vibration energy as an internal heat source. In this paper the applicability of the UET for a realtime defect detection is described. Measurements were performed on two kinds of pipes made from a copper and a CFRP material. In the interior of the CFRP pipe (70mm diameter), a groove (width - 6mm, depth - 2.7mm, and length - 70mm) was engraved by a milling. In the case of the copper pipe, a defect was made with a groove (width - 2mm, depth - 1mm, and length - 110 mm) by the same method. An ultrasonic vibration energy of a pulsed type is injected into the exterior side of the pipe. A hot spot, which is a small area around the defect was considerably heated up when compared to the other intact areas, was observed. A test On a damaged copper pipe produced a thermo sonic image, which was an excellent image contrast when compared to a CFRP pipe. Test on a CFRP pipe with a subsurface defect revealed a thermo sonic image at the groove position which was a relatively weak contrast.

키워드

참고문헌

  1. R. B. Mignogna, R.E. Green Jr, J.C. Duke Jr, E.G. Henneke II and K.L. Reifsnider, 'Thermographic investigation of high-power ultrasonic heating in materials', Ultrasonics, 19, 159 (1981) https://doi.org/10.1016/0041-624X(81)90095-0
  2. J. Rantala, D. Wu, A. Salerno and G. Busse, 'Lock-in thermography with mechanical loss angle heating at ultrasonic frequencies,' Proc. Int Conf. Quantitative InfraRed Thermography (QIRT96), Stuttgart, Germany, Sep.2-5, (1996)
  3. L.D. Favro, X. Han, Z. Ouyang, G. Sun, H. Sui and R.L. Thomas, 'Infrared imaging of defects heated by a sonic pulse', Rev. Sci. Instr., 71, 2418 (2000) https://doi.org/10.1063/1.1150630
  4. L.D. Favro, X. Han, Z. Ouyang, and R.L. Thomas, 'Progress in thermosonic crack detection', Proc. of SPIE, 4360, 546 (2001)
  5. L.D. Favro, R.L. Thomas, X. Han, Z. Ouyang, G. Newaz and D. Gentile, 'Sonic infrared imaging of fatigue cracks', Int. J of Fatigue, 23, S471(2001) https://doi.org/10.1016/S0142-1123(01)00151-7
  6. W.O. Miller, 'An evaluation of sonic IR for NDE at Lawrence Livermore National Laboratory', Proc. of SPIE, 4360, 534 (2001)
  7. T. Zweschpher, G. Riegert, A. Dillenz and G. Busse, 'Ultrasound burst phase thermography (UBP) for applications in the automotive industry,' AIP Conf. Proc., 657, 531 (2003)
  8. T. Zweschpher, A. Dillenz, D. Scherling and G. Busse, 'Ultrasound excited thermography using frequency modulated elastic waves,' Insight, 45, 1 (2003)
  9. G. Busse, A. Dillenz and T. Zweschper, 'Defect selective imaging of aerospace structures with elastic-wave-activated thermography', Proc. of SPIE, 4360, 580 (2001)
  10. X. Han, L.D. Favro, Z. Ouyang and R.L. Thomas. 'Thermosonics: detecting cracks and adhesion defects using ultrasonic excitation and infrared imaging', Int. J of Adhesion, 76, 151 (2001) https://doi.org/10.1080/00218460108029622
  11. X. Han, V. Loggins, Zhi Zeng, L.D. Favro and R.L. Thomas, 'Mechanical model for the generation of acoustic chaos in sonic infrared imaging', Appl. Phys. Lett., 85, 1332 (2004) https://doi.org/10.1063/1.1785285
  12. X. Han, Z. Zeng, W.Li, S. Islam. J. Lu, V. Loggins, E. Yitamben, L.D. Favro, G. Newaz and R.L. Thomas, 'Acoustic chaos for enhanced detectability of cracks by sonic infrared imaging', J. Appl. Phys., 95, 3792 (2004) https://doi.org/10.1063/1.1652243
  13. L. D. Landau and E. M. Lifshitz, Theory of Elasticity, 3rd ed, p. 137, Butterworth Heinermann (1997)

피인용 문헌

  1. Crack Detection in Pillars Using Infrared Thermographic Imaging vol.40, pp.3, 2017, https://doi.org/10.1520/GTJ20150245
  2. Monitoring of pressurized pipes using optical fiber sensors vol.57, pp.05, 2018, https://doi.org/10.1117/1.OE.57.5.054114
  3. Crack Detection in Concrete Parts Using Vibrothermography vol.38, pp.1, 2019, https://doi.org/10.1007/s10921-019-0562-0