Journal of the Korean Wood Science and Technology

The Korean Society of Wood Science & Technology (한국목재공학회)
권호 표지

Field Application of an Ultrasonic Testing for Reconstructing CT Images of Wooden Columns

  • Lee, Sang-Joon (Department of Forest Sciences, College of Agriculture & Life Sciences, Seoul National University) ;
  • Park, Chun-Young (Department of Forest Sciences, College of Agriculture & Life Sciences, Seoul National University) ;
  • Kim, Kwang-Mo (Department of Forest Products, Division of Wood Engineering, Korea Forest Research Institute) ;
  • Lee, Jun-Jae (Department of Forest Sciences, College of Agriculture & Life Sciences, Seoul National University)
  • Received : 2009.02.18
  • Accepted : 2009.03.09
  • Published : 2009.03.25
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Abstract

This research examined the applicability of using an ultrasonic test to reconstruct CT images of an ancient wooden building. Most of the columns in the building are severely deteriorated due to termite attacks or the effect of weathering. Ultrasonic CT images of the columns were used to create highly accurate digital reconstructions, despite a lack of the data caused by parts of the building walls being buried. Another semi-NDE technique, a drilling test based on resistography, was applied in order to verify the ultrasonic test results. The discrepancy in detection between two methods is believed to be due to the fundamental differences between two methods. The performance of the ultrasonic test was hindered by poor surface conditions and this technique tended to over-estimate the size of cavities produced by termites or other insects. Nevertheless, the deterioration detected was in many ways congruent with the drilling test results

Keywords

Acknowledgement

Supported by : Korea Science and Engineering Foundation, Agricultural R&D Promotion Center

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