Development of manufacturing support system for ship curved shell plate using laser scanner

• Main Authors: Taiga Mitsuyuki, Kazuo Hiekata, Tatsuya Kasahara
• Format: Article
• Language: English
• Published: Elsevier 2020-09-01
• Series: Results in Engineering
• Subjects: 3D laser scanner; Manufacturing plan; Curved shell plate; Line heating
• Online Access: http://www.sciencedirect.com/science/article/pii/S2590123020300633

Curved shell plates used for ship hull have complicated three-dimensional curved surfaces, especially at the bow and stern. The manufacturing processing of ship curved shell plates have been carried out for many years by the tacit knowledge and experience of skilled workers by using wooden templates, and this processing is heavily dependent on individual skills. Formalization and systematization of this manufacturing process are desired．This paper proposed a system to enable skilled workers to process curved shell plates to the desired shape without using wooden templates. Especially, we analyzed a curvature error evaluation method, which is a previous work, and clarifies that the integral value of the curvature error should be used to determine the heating position at the same level as the skilled worker’s decision-making. In addition, total information system was developed for supporting skilled workers decision-making by using several calculation methods.In the case study, we applied the proposed system to an actual bending curved shell plate process. It was confirmed that the proposed system could provide a satisfactory level of decision-making support of the line heating process in the production field of a shipyard.