Mayckol J Morales C, Jorge E Gomez H
In Colombia, there are many industries and technological centers located in cities several meters above the sea level (> 1 000 m), this condition restrict the scope for the negative pressure gauge calibrations to the local atmospheric pressure, as no all accredited laboratories have the negative pressure calibration branch, the costumer may need to send the device to a city where could not be possible to reach the device full span, typically (~-101 kPa to 0 kPa). But for a a digital negative pressure gauge there is an alternative way, by using absolute pressure gauges to reach a pressure...
TC16 Conference 2017
· TC16
· 2017
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Goh Hok Liok
Two piston-cylinder assemblies with large nominal diameters of 50 mm and 35 mm, which are intended to establish new primary pressure standards, have been set up in the National Metrology Centre, Agency for Science Technology and Research, (NMC, A*Star), the national metrology institute of Singapore. These two assemblies have been calibrated by Geometry Metrology Standards for the properties of straightness, roundness, and diameters. Based on the calibrated data of properties, a known and proven least square method for three-dimensional geometry is applied to determine the effective areas at...
TC16 Conference 2017
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· 2017
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Hongbo Wang, Cheng Li, Li Zhang, Wu Zeng
Dynamic calibration of pressure sensors is becoming more important. Shock tubes can generate a pressure step which could provide the basis for dynamic calibration of pressure sensors. The amplitude of this pressure step generated upon reflection of the wave from the end face of the tube can be determined accurately from ideal gas theory using readily measured parameters, such as shock wave velocity, static temperatures and pressures which can be traceable to the national Standard. With the tests of dynamic calibration using shock tube, we could get the time response of the sensor to be...
TC16 Conference 2017
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· 2017
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Asier Gonzalez, Diego Galar
Due to the wind power capacity energy grow exponential, interest in operation maintenance is increasing. A proper pitch controller must be designed to extend the life cycle of some wind turbine (WT) components such as blades or tower. The pitch control system has two main, but conflicting, objectives. On the one hand, it seeks to maximize the wind energy captured and converted into electrical energy. On the other hand, it seeks to minimize fatigue and mechanical load. Various metrics are proposed to achieve a compromise solution that balances these objectives. A WT of 100 kW is used to...
TC10 Workshop on Technical Diagnostics 2017
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· 2017
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Dammika Seneviratne, Shi Boyang, Diego Galar, Uday Kumar
Linear assets have linear properties, for instance, similar underlying geometry and characteristics over a distance. They show specific patterns of continuous inherent deteriorations and failures. Therefore, remedial inspection and maintenance actions will be similar along the length of a linear asset, but because it is distributed over a large area, the execution costs are greater. Autonomous robots can be programmed for repetitive and specific tasks. Unmanned aerial vehicles and remotely operated vehicles are currently used in different industrial settings in ad-hoc manner for inspection...
TC10 Workshop on Technical Diagnostics 2017
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· 2017
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István Dr. Lakatos, Péter Őri
Diagnostics means instrumental measurement without dismantling. So measuring the engines on rolling roads is not incorporated in this concept, as this measurement is accomplished on engines taken out from vehicles. During service, it is often necessary to measure the performance of the engines, or to judge the performance projection of some corrections. The new method discussed in this article provides a solution to this problem.
TC10 Workshop on Technical Diagnostics 2017
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· 2017
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Zsolt János Viharos, Szilveszter Soós, Gábor Nick, Richárd Beregi
The industry of 21st century, the series of innovations, developments in information and communication technology (ICT), Cyber-physical systems (CPS) and the introduction of tools and services in the production process, which in turn affects the economic players, thus influence regional competitiveness and behaviour. Industry 4.0 has become by now a global slogan and its ideas can be recognized in the industry development and industry digitalization policies pursued by individual countries and the priority of which is to improve the competitiveness of the given country. For measuring the...
TC10 Workshop on Technical Diagnostics 2017
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· 2017
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Szabolcs Szalai, Imre Czinege
Digital image analysing methods are widely used for evaluating local deformations in sheet metal tests and forming processes. The paper is focusing on tensile tests of uniform and non-uniform width flat specimens made of aluminum alloys, which are suitable for demonstrating Lüders strain, Portevin-Le Chatelier (PLC) effect and for determination of Forming Limit Curve. Tests were carried out using GOM-ARAMIS® digital image analysis hardware and software. Observation of local deformations during tensile tests showed that initiation and evolution of local strains depend on the position of...
TC10 Workshop on Technical Diagnostics 2017
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· 2017
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Zsolt Ferenc Kovács, János Kodacsy, Zsolt Janos Viharos
In this paper, the authors present the results of experimental work regarding permanent Magnetic Assisted Ball Burnishing (MABB) tool. This type is a special tool using the magnetic field to produce the necessary force for burnishing. The tool applicable especially to rolling flat and 3D surfaces. For the correct operation of tool, it is needed to set up an optimal distance between the tool and workpiece. In order to define it the authors measured the F z force, which occurs between the tool and workpiece while the magnetic force pulls the rolling balls on a cone which located at the end of...
TC10 Workshop on Technical Diagnostics 2017
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· 2017
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Krisztina Konrád, Zsolt János Viharos, Gábor Németh
Pellets production and consumption are steadily increasing as a kind of energy source. The production and combustion properties of pellets are defined by molecular structure and elemental composition of raw materials. Quality control tools are different in terms of areas they cover the pellet-production cycle, but it is somewhat typical that they regulate only the origin of raw materials. In the light of these deficiencies, the evaluation of the quality properties in finished product had been overviewed. There are standardized analytical methods to the biomass product qualification, and...
TC10 Workshop on Technical Diagnostics 2017
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· 2017
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