Development of body structure of small scale ROV for educational purposes

Havit, Cornelius (2022) Development of body structure of small scale ROV for educational purposes. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

The evolution of technology is going to accelerate the development of ROV technology in the educational sector, but there are numerous obstacles in the process of developing all ROVs, particularly in the manufacturing of its frames. Thus, this paper describes the development of the body structure of a small size ROV for educational purposes, with chapter-by-chapter details. The major objectives of this paper were to develop a small size ROV body structure, fabricate a small-scale ROV suitable for educational purposes, and finally develop a ROV’s body frame that able to withstand the underwater pressure. The ROV's body frame is created using engineering design methodologies such as House of Quality (HOQ), Morphological chart, and Pugh method. The final frame of the small scale ROV was developed and tested. The final frame dimensions of the small-scale ROV were 300 mm x 310 mm x 200 mm, with a thickness of 20 mm. Additionally, the box design frame of the small-scale ROV was chosen due to its adaptability and engineering capabilities, which allow it to dive successfully underwater. The nylon FS 3300 PA was chosen for the overall materials of the frame, as well as its capacity to resist underwater pressure, simplicity of fabrication, and other engineering advantages. The SLS machine was used to create and fabricate the body frame, thruster base, rear rod, and grabber holder, as well as the printing procedures, all of which were measured according to industry standards. The result demonstrates the design and manufacture of a body frame for a small size ROV for educational purposes was able to develop and fabricate, using a box shape and nylon FS 3300 PA as the material. The capacity of the body frame to withstand the underwater pressure was analyzed by using Autodesk Inventor. To prevent fracture difficulties, the ideal depth for the ROV to dive was within or around one meter. The results also suggest that the ROV's body frame will be subjected to the maximum stress pressure, causing the body frame to bend. The commercialization potential is strong owing to the applicability of the smallscale ROV utilised to assist the educational sector in exploratory activities and expose students to the technology of SLS 3D Printing.

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