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11 03, 2020

3D Visual Image Correlation

Non-contact Strain Measurement Digital Image Correlation technology provides three-dimensional (3D) measurements of shape, global displacement and relative displacement (strain) on the surface an object using an optical method. Generally, Digital Image Correlation systems involve two or more imaging sensors (i.e. cameras) to provide sufficient information to for the software to triangulate and track objects in three dimensions. With the help of a randomized speckle pattern applied to the object’s surface, Digital Image Correlation systems can resolve displacements into continuous stress and strain measurements within the area of focus. Some of the main advantages of Digital Image Correlation [...]

22 02, 2020

Validating Designs of a Compressed Natural Gas Carrier

Design Validation for the Regulatory Approval of a System for CNG Transportation by Ship The CNG Optimum System, a compressed natural gas (CNG) containment carrier developed by Global Energy Ventures Ltd. (GEV), required approval from the American Bureau of Shipping (ABS) prior to commercial construction. This program was part of a larger project, which included the design of the ship on which the CNG Optimum System would be installed. As part of the CNG Optimum System approval process, testing was required to validate the fatigue resistance and burst capacity, as per the table below. Two additional tests [...]

18 02, 2020

Deepwater Experimental Chamber

Is it Going to Survive in a Sub-sea Environment? C-FER Technologies's Deepwater Experimental Chamber (DEC) enables full-scale testing of deepwater pipeline, subsea production equipment and subsea vehicle components. The chamber is unique because of the combination of its size, pressure rating and ease of access. Simulating Sub-sea Depths up to 5 km (3 miles) for Offshore Pipe and Autonomous Underwater Vehicles The DEC is designed to accommodate multiple measurement, hydraulic power and mechanical feed-throughs which allow activation of system components inside the chamber while at pressure. Specialized, high capacity bending and torsion systems are also available for [...]

30 05, 1999

Optimization of Diesel Powered Underwater Vehicles

Abstract The critical enabling technologies which have been identified to fully realize the potential of Autonomous Underwater Vehicles (AUVs) are: long endurance propulsion/energy systems; geodetic and relative navigation; underwater communications; mission management and control; sensors and signal processing; and vehicle design. However, perhaps the most critical technology for almost every AUV application, and often the operational limiting factor, is the availability of adequate onboard energy/power. Given the specialist nature of the AUV market, research and development into new AUV-specific power systems is inevitably limited by resources. Hence, with the numerous design considerations of an AUV, full knowledge and understanding [...]

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