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
- 2018.2
- 수록면
- 66 - 74 (9page)
- DOI
- 10.3744/SNAK.2018.55.1.66
이용수
초록· 키워드
오류제보하기
In order to evaluate the precision degree of the blocks on the dock, the shipyards recently started to use the point cloud approaches using the 3D scanners. However, they hesitate to use it due to the limited time, cost, and elaborative effects for the post-works. Although it is somewhat traditional instead, they have still used the electro-optical wave devices which have a characteristic of having less dense point set (usually 1 point per meter) around the contact section of two blocks. This paper tried to expand the usage of point sets. Our approach can estimate the rework time to weld between the Pre-Erected(PE) Block and Erected(ER) block as well as the precision of block construction. In detail, two algorithms were applied to increase the efficiency of estimation process. The first one is K-mean clustering algorithm which is used to separate only the related contact point set from others not related with welding sections. The second one is the Concave hull algorithm which also separates the inner point of the contact section used for the delayed outfitting and stiffeners section, and constructs the concave outline of contact section as the primary objects to estimate the rework time of welding. The main purpose of this paper is that the rework cost for welding is able to be obtained easily and precisely with the defective point set. The point set on the blocks’ outline are challenging to get the approximated mathematical curves, owing to the lots of orthogonal parts and lack of number of point. To solve this problems we compared the Radial based function-Multi-Layer(RBF-ML) and Akima interpolation method. Collecting the proposed methods, the paper suggested the noble point matching method for minimizing the rework time of block-welding on the dock, differently the previous approach which had paid the attention of only the degree of accuracy.
목차
1. 서론
2. 관련 연구 현황
3. 3점 정합 방법의 정의
4. 3점 정합 방법 구현 방안
5. 외각 측정 점 자동 획득
6. 정합면 곡선 형성 방법
7. 재작업 시수 예측
8. 결론
References
참고문헌 (8)
참고문헌 신청
[학술지(정기간행물)] - Akima, H. / 1970 / A New method of interpolation and smooth curve fitting based on local procedures / Journal of the Association for Computing Machinery 17 (4) : 589 ~ 602
[학술지(정기간행물)] - Besl, P.J. / 1992 / A method for registration of 3-D shapes / IEEE Transactions on Pattern Analysis and Machine Intelligence 14 (2) : 239 ~ 256
[단행본] - Buhmann, M.D. / 2003 / Radial basis functions: theory and implementations / Cambridge University Press, Inc
[학위논문] - Heo, H.Y. / 2014 / A stochastic assessment method and its applications to the effect of welding distortion on production cost of ship and ocean plant / Ph.D. / Korea Advanced Institute of Science and Technology
[학술지(정기간행물)] - 이호철 / 2012 / 선박블록의 정도관리를 위한 3차원 좌표의 패턴매칭 알고리즘에 대한 연구 / 한국통신학회논문지C 37 (10) : 933 ~ 939
[학술지(정기간행물)] - Besl, P.J. / 1992 / A method for registration of 3-D shapes / IEEE Transactions on Pattern Analysis and Machine Intelligence 14 (2) : 239 ~ 256
[단행본] - Buhmann, M.D. / 2003 / Radial basis functions: theory and implementations / Cambridge University Press, Inc
[학위논문] - Heo, H.Y. / 2014 / A stochastic assessment method and its applications to the effect of welding distortion on production cost of ship and ocean plant / Ph.D. / Korea Advanced Institute of Science and Technology
[학술지(정기간행물)] - 이호철 / 2012 / 선박블록의 정도관리를 위한 3차원 좌표의 패턴매칭 알고리즘에 대한 연구 / 한국통신학회논문지C 37 (10) : 933 ~ 939
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UCI(KEPA) : I410-ECN-0101-2018-538-001764643