지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2013.1
- 수록면
- 164 - 172 (9page)
이용수
초록· 키워드
오류제보하기
The purpose of this research was development of quantitative ultrasonic test methodology for detecting internal defects in members of ancient wooden building. Connection part between wooden members and/or contacted or hidden part by wall of ceiling or other construction materials make it hard to apply direct way of ultrasonic test. So indirect way of ultrasonic test needed to be applied. Test methodology with newly developed prototype of ultrasonic system was proposed. Homogeneous material with polypropylene was also tested for establishing the criterion. Results showed that TOF(time of flight)-energy and pulse length were found out to be proper ultrasonic parameters for predicting depth of defect in wood different from polypropylene. It was not possible to directly apply prediction equation derived from polypropylene. Newly established prediction equation shows coefficient of determination of 0.73 for wood. Finally, defect of replaced rafter members was predicted with the coefficient of determination of 0.32. Various aspects of ultrasound propagation in wood including anisotropy need to be carefully considered to raise up the prediction accuracy.
목차
등록된 정보가 없습니다.
참고문헌 (11)
참고문헌 신청
Beall, F. C / 2002 / Overview of the use of ultrasonic technologies in research on wood properties / Wood Science and Technology 36:197~212
Berndt, H. / 1999 / High-resolution ultrasonic imaging of wood
Bucur, V. / 1994 / Factors affecting ultrasonic measurements in solid wood / Ultrasonics 32:385~390
Han, S. R. / 2006 / Studies about the influence factors on ultrasonic velocity of domestic red pine / Key Engineering Materials 321:1177~1181
Kabir, M. F. / 2002 / Time domain ultrasonic signal characterization for defects in thin unsurfaced hardwood lumber / Wood and fiber science 34:165~182
Berndt, H. / 1999 / High-resolution ultrasonic imaging of wood
Bucur, V. / 1994 / Factors affecting ultrasonic measurements in solid wood / Ultrasonics 32:385~390
Han, S. R. / 2006 / Studies about the influence factors on ultrasonic velocity of domestic red pine / Key Engineering Materials 321:1177~1181
Kabir, M. F. / 2002 / Time domain ultrasonic signal characterization for defects in thin unsurfaced hardwood lumber / Wood and fiber science 34:165~182
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