Bachelors Project 2024
By Daniel Sonnenborg & Bertram Gravers
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This project aims to design a waterproof housing for an advanced 3D scanner, used to inspect underwater structures. Traditional methods, like diving and video capture, often struggle with poor visibility. In contrast, precise 3D scanning's makes for more accurate inspections. This project aims to develop a compact, pressure-resistant enclosure for depths up to 300 meters, improving the scanner's durability, assembly and production cost.
Analysis of existing scanner system
UVision initially developed a temporary waterproof housing for their 3D scanning system, but it faced several issues. The design lacked adequate pressure resistance for deep-sea operations and was cumbersome to assemble, complicating production and maintenance. Additionally, it was not flexible enough to support various operational scenarios like ROV-based operations and handheld use.
Project Specifications
Finite Element Analysis
Finite element analysis (FEA) is essential for optimizing the shape and size of the subsea scanner housing. By simulating structural behavior under high-pressure conditions, FEA helps identify designs that maximize strength while minimizing material and weight, ensuring a robust and efficient underwater housing.
Internal structure
The cardboard model demonstrate potential placements for the mounting surfaces on the frame, and explores various manufacturing methods and materials yielding different outcomes.
3D printed prototype
To assess potential limitations, a 3D-printed version of Concept 3 was produced for the internal mounting design. During evaluation, it was found that a single connection between the camera surface and the main plate was insufficient due to expected weakness at the joint.
Final prototype in laser cut acrylic
The final prototype was made of 3 laser cut acrylic plates all connected by L-brackets and nylon rods. The end result was a sturdy 43g frame fitting all criteria.
Subsea 3D scanner - UVision
UVision's cutting-edge subsea scanner, developed for high-precision underwater inspections. This innovative underwater 3D scanner is designed to create detailed models of submerged structures, providing superior clarity over traditional 2D video inspections. By integrating advanced computer vision technology and dual stereoscopic cameras, the scanner generates precise 3D maps even in challenging underwater environments.
The subsea inspection tool is housed in a robust, pressure-resistant scanner enclosure optimized for use at depths up to 300 meters. Built from corrosion-resistant marine technology, it ensures durability and long-lasting performance in saltwater environments. With versatile mounting options, this ROV-compatible scanner is suitable for use with Remote Operated Vehicles (ROVs), handheld setups by divers, and extension poles.
This marine inspection equipment delivers detailed underwater imaging, making it ideal for industries involved in offshore inspection, marine structure 3D modeling, and subsea surveys. Operators can capture critical data, helping facilitate maintenance and repair for submerged assets such as pipelines, bridges, and offshore installations.