Open projects

Conditiebewaking van laagtoerige hoofdlagers van direct drive wind turbines – XEMC-DARWIND

Omdat de technieken voor conditiebewaking van langzaam draaiende lagers veel minder ontwikkeld
zijn dan die voor snellopende lagers, zijn op het prototype van de XD115 wind turbine alle via het
systeem configureerbare nabewerkingen ingesteld. Dit leidt tot een enorme hoeveelheid data. De
afstudeerstage bestaat uit het inventariseren van geschikte methoden voor lagerbewaking van
langzaamdraaiende lagers, zowel op basis van theoretische overwegingen / faalmodi inherent aan
het ontwerp als op basis van de gemeten data op de XD115, en het implementeren van een
configuratie van het systeem op het XD115 prototype waarmee op een betrouwbare en een
eenvoudige wijze inzicht in de conditie van het lager verkregen kan worden en een uitspraak gedaan
kan worden over de resterende levensduur van het lager. ... read more

Developing a condition assessment system for a naval ship - ROYAL NETHERLANDS NAVY

In this project a condition assessment system will be developed based on the signals and sensors that are already available in all the subsystems (engines, generators, pumps, radar systems, etc.). This requires a motivated selection and combination of appropriate data sources and a translation of that data into useful information on the state of the system. The final goal is to obtain a central system that provides a quick overview of the condition and performance of all subsystems on board. In this project, a cooperation between the Navy, several OEMs (Pon, Thales, Imtech) and Oliveira (data collection and visualization) will be established. ... read more

Development of Audio Condition Monitoring method – NOVEK TECHNICAL SOLUTIONS

In this project a audio condition monitoring system will be tested and validated. Novek develops such a system with a foreign partner company, aiming to provide an advanced condition monitoring system for rotating equipment. The new technique must be tested (experiments can be performed in the Novek facilities) and validated to demonstrate its feasibility. ... read more

Fatigue Monitoring of Nuclear Reactors – NRG

Structural Integrity of Nuclear Reactors Important systems that are covered by the Fatigue Monitoring Program are the primary and secondary cooling systems. A specific form of fatigue is fatigue due to thermal cycling. Strong links are observed between the Fatigue Monitoring Program and the Preventive Maintenance Process studied by Prof. Tinga. A graphical representation of such a program structure is shown below (Figure 1). Usage monitoring is done by measuring system state parameters like temperature, pressure and flow (Figure 2). Also detailed information about events occurred are logged. Finite Element Models are used to calculate the internal loads: stress levels in the specific components. Environmental assisted fatigue failure models are used to determine the accumulated damage
and the expected remaining life time. ... read more

Smart Rubber for Car Tyres

The R&D department of Apollo-Vredestein has identified monitoring as an innovation with a high potential to develop innovative tyres. Tyres with a monitoring system have a unique selling point: they provide the user with valuable information on the performance of the tyre. In the long run, the system is foreseen to evolve to an active system, further increasing drive safety and comfort. ... read more

Niet Destructief Onderzoek Vaste Stuwstof Raketmotoren - TNO RIJSWIJK

TNO wants to get insight in the feasibility of Non-Destructive Testing (NDT) as alternative for (or addition to) the present destructive tests. A feasibility study must thus be performed, consisting of a literature study, simulations and experiments. At the start of the project, a wide range of methods will have to be compared (e.g. X-Ray, thermographic methods, dynamic method, e.g. ultrasonic / structural vibrations). After a trade-off, the most promising techniques can be studied in more detail.
In this second phase, experiments can be performed at the TNO laboratories, data can be collected and appropriate analysis techniques must be developed. To aid the interpretation of the obtained signals, numerical models can be developed to simulate the tests and compare the results. ... read more

Rotor-Dynamic Analysis of the High Speed Turbo-Generator

Triogen is a supplier of ORC (Organic Rankine Cycle) systems, who has successfully incorporated world class technology into a reliable standardized innovative product. Our mission is “to deliver a meaningful contribution to the solution of global warming and the energy problem, by offering our solutions for cost effective and environmentally friendly generation of electricity from waste heat”.
The key component of the Triogen ORC is the proprietary High-speed Turbo-Generator (HTG). The vertically positioned rotor of the HTG consists of the generator-rotor between two bearings, with at the lower side the overhung turbine-wheel and at the upper side the overhung pump-wheel. This rotor operates at a speed around 25.000 rpm. At various stages during the development of the system, the dynamic behaviour of this rotor was analysed, especially in combination with the currently used bearings.
As alternative bearing types are being sought for, there is a need to have a generic model available, where characteristic bearing data (i.e. stiffness and damping) can be incorporated. Of course, stiffness and damping of the support structure has to be taken into account also. ... read more