Journal of the Korean Wood Science and Technology

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

Nondestructive bending Strength Evaluation of Woodceramics Using Resonance Frequency Mode (I) - Carbonizing Temperature -

  • Byeon, Hee-Seop (Faculty of Forest Science, Institute of Agriculture & Life Science, Gyeongsang Nat'l Univ.) ;
  • Ahn, Sang-Yeol (Faculty of Forest Science, Institute of Agriculture & Life Science, Gyeongsang Nat'l Univ.) ;
  • Oh, Seung-Won (Faculty of Forest Science, Chonbuk Nat'l Univ.) ;
  • Piao, Jin-Ji (Faculty of Forest Science, Chonbuk Nat'l Univ.)
  • Received : 2003.05.10
  • Accepted : 2003.07.10
  • Published : 2004.05.25
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Abstract

Nondestructive evaluation (NDE) technique method using a resonance frequency mode was carried out for woodceramics produced at different carbonizing temperatures (600℃, 800℃, 1000℃, 1200℃, 1500℃) at the phenol resin impregnation rate of 70%, for three kinds of species (Pinus densifora, Pinus koraiensis, Larix leptolepis), respectively. There was a poor relationship between density and static bending MOR. However, close correlations were found between dynamic MOEd and static bending MOR, and between static MOEs and MOR. Especially, the correlation coefficient was highest between MOEd and static bending MOR. Therefore, the MOEd using the resonance frequency mode is useful as a NDE method for predicting the MOR of woodceramics produced at different carbonizing temperatures.

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Acknowledgement

This study was supported by Technology Development Program for Agriculture and Forestry, Ministry of Agriculture and Forestry, Republic of Korea.