Uncertainty analysis in determining the position of a drill bit: Het bepalen van de onzekerheden bij het bepalen van de positie van een boorkop

In well-bore engineering, oil-well boreholes are made using specialized drilling rigs. The position of the drill bit needs to be indirectly determined through accelero- and magnetometer measurements. To this end, the measurement data is first converted into a survey of direction vectors by applying a series of coordinate transformations. Then, a...

FSI Analysis and Optimization of 3D beam structures

Aiming to enhance the performance of the industrial design process, structural optimization techniques have been proposed as an alternative to traditional design and optimization techniques.<br/>They own the potential of achieving an optimal distribution of the material through the design domain, thus reducing waste loss and weight, and...

Hybrid Force-Position Control of the Motion Compensated Gangway

Motion compensation for personnel transfer has greatly reduced costs and increased accessibility for offshore assets operation and maintenance. Solutions exist using hexapods or gangways that make a stiff connection by clamping to a customized offshore structure. State of the art gangways allow for a stepless workflow and have a rubber tip which...

Space systems conceptual design: Analysis methods for engineering-team support

The research can be placed in the framework of designing methods for complex systems focused on the conceptual design phase of the systems’ life-cycle. More specifically, the methods presented in the dissertation belong to the category of Operational Research methods. They aim at the creation of design and analysis tools in support of the...

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