Journal of the Korean Wood Science and Technology

The Korean Society of Wood Science & Technology (한국목재공학회)
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Predicting the Withdrawal Load of Wood Screws in Domestic Wood by Screw Diameter, Depth of Penetration and Specific Gravity of Wood

국내산 목재에 대한 나사못 직경, 관입길이 및 목재비중에 따른 나사못 유지력 예측

  • Cha, Jae-Kyung (Dept. of Forest Products and Life Science, College of Forest science, Kookmin University)
  • 차재경 (국민대학교 임산생명공학과)
  • Received : 2011.04.19
  • Accepted : 2011.05.13
  • Published : 2011.05.25
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Abstract

Tests were carried out on domestic wood samples to modify the formula which had previously been developed to predict the withdrawal strength of screw on the face of lumber. Screw sizes were No. 6, 8 and 10 used in this study. Predicted equations were fitted to the results of different length of No. 8 wood screw. The withdrawal strength of screws was enabled to predicted as a function of screw diameter, depth of penetration, and specific gravity of wood. Predicted equation was under-predicted the withdrawal strength of 25 and 30 mm length of screw within 5% and over-predicted withdrawal strength of 18 and 38 mm length of screw.

국내에서 생산되는 목재에 대한 나사못 유지력을 기존의 식으로부터 수정된 예측 식으로 나타내기 위해 나사 못 뽑기 실험을 실시했다. 본 연구에 사용된 나사못은 No. 6, No. 8 및 No. 10이었다. 예측 식은 길이가 서로 다른 No. 8 나사못의 실험결과와 매우 일치하였다. 나사못 유지력의 예측 식은 나사못의 직경과 관입길이 및 목재비중의 함수로 나타냈다. 예측 식은 나사못 길이가 25와 30 mm에서 5% 이내로 작게 예측되었으나 18과 38 mm에서 큰 값을 보였다.

Keywords

References

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  1. Effect of the Withdrawal Strength of Wood Screws in Domestic Wood by Shear Strength with Different Growth Ring Orientation vol.40, pp.6, 2012, https://doi.org/10.5658/WOOD.2012.40.6.363
  2. Predicting the Screw Withdrawal Load of Commercial Particleboard Manufactured in Korea vol.41, pp.6, 2013, https://doi.org/10.5658/WOOD.2013.41.6.544