가문비나무의 연륜폭 광협에 따른 성숙재와 미성숙재의 초음파적 특성

• 영문명: Ultrasonic properties of juvenile and adult wood of Sitka spruce in relation to the width of annual ring
• 발행기관: 한국가구학회
• 저자명: 이화형(Hwa-hyoung Lee)
• 간행물 정보: 『한국가구학회지』한국가구학회지 제8권 제1호, 63~72쪽, 전체 10쪽
• 주제분류: 예술체육 > 미술
• 파일형태: PDF
• 발행일자: 1997.12.30

영문 초록

This study was carried out to analyze the ultrasonic properties of juvenile - and adult-wood, and heartWood and sapwood of Sitka spruce in relation to the width of annual rings. A very wide width of annual ring-wood indicates the lowest longitudinal acoustic radiation and the highest tangential acoustic radiation. Outer sapwood of adult wood very near the bark shows higher acoustic radiation than that of inner heartWood of juvenile wood near the pith in all three direction for a very wide width of annual ring. But middle and narrow widths-wood give that outer sapwood of adult woods very near the bark show lower longitudinal acousic radiation and higher acoustic radiation perpendicular to the grain, especially higher radial acoustic radiation than those of inner heartwood of juvenile woods near the pith. Therefore outer sapwood of adult wood very near the bark seeks to meet the symmetry from acoustic anisotropy. Narrow width of annual ring-wood gives the highest longitudinal acoustic radiation and the lowest tangential acoustic radiation.

목차

1. 서론

2. 재료 및 방법

4. 결과 및 고찰

5. 결론

6. 참고문헌

키워드

Ultrasonic property juvenile wood and adult wood acoustic radiation acoustic symmetry