Jae-Hwa Hong, Jung Hun Park
A gauge to measure the coating thickness of magnetic coatings on non-magnetic base material has been developed by directly measuring the magnetic flux density between the coating and the permanant magnet. Magnetic induction method was found to be inadequate for measuring magnetic coating thickness which is greater than 0.4 mm. Magentic flux density was measured by Hall effect sensor and calibration curve was constructed by using the data acquired from 10 standard reference samples. The developed gauge can be used to measure non-magnetic coatings over magnetic substrate as well. The relative...
TC10 Workshop 2013
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· 2013
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Binnur Sagbas, M. Numan Durakbasa
Previous measurements of frictional temperature rise on the surfaces of artificial joints have shown that temperature values could reach high levels that make hazardous effects on surrounding tissue and lubricant around the artificial joint. For reduction of this thermal damage, testing parameters and their effects were investigated by using Taguchi method and analysis of variance. Vitamin E blended ultra high molecular weight polyethylene (VE-UHMWPE) was used for acetabular inserts. These inserts were paired with CoCrMo femoral heads. In vitro frictional heating measurements were carried...
TC10 Workshop 2013
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Zsolt János Viharos, Krisztián Balázs Kis
The paper introduces an algorithm for increasing the speed for building up the general system model on Artificial Neural Network (ANN) basis. It finds that input/output configuration of the field analysed which realizes the most accurate estimation and explores the maximal number of dependencies among the related system parameters. The availability and the estimation capabilities of the needed system models are especially important for technical diagnostics in order to be able in differentiating between conform and nonconform situations. The performance of the novel solution is tested and...
TC10 Workshop 2013
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Benedetto Allotta, Luigi Chisci, Pierluca D'Adamio, Susanna Papini, Luca Pugi
The interest of train signaling vendors in systems for driverless operation is gradually increasing in order to reduce the operational costs and improving the frequency of service. Many examples of installations all over the world follow the different available standards: VAL (Torino, Lilie, Rennes), SelTrac (London, Vancouver, Shangai), etc. In this paper the focus is placed on the Communications-Based Train Control (CBTC) system, which is based on moving-block signaling. In particular, a design solution for the Automatic Train Operation (ATO) subsystem is presented. Numerical simulations...
TC10 Workshop 2013
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A. Biagini, R. Conti, E. Galardi, L. Pugi, E. Quartieri, A. Rindi, S. Rossin
The use of simulation tools for industrial system analysis is continuously increasing in Oil & Gas applications, (such as the development of lubricating systems). In particular Virtual HazOp (acronym of Hazard and Operability) analysis is an important tool to optimize the plant in terms of diagnostics for Maintainability, Safety, Risk assessment and management. Also the use of simulation tools can drastically increase speed, efficiency and reliability in the design process of safety critical systems. Authors, in collaboration whit GE-Nuovo Pignone, have developed a library of customizable...
TC10 Workshop 2013
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Adrian Bilski, Jacek Wojciechowski
The aim of this paper is to bring the reader closer to the diagnostics of complex analog systems with parametric faults, using Support Vector Machine (SVM) as a tool for fault location. The results of diagnostics of a video enhancer and two low-pass filters with the help of SVM network are presented, and various SVM kernel functions tested. A strategy for finding the optimal kernels and their parameters for the particular system under test is proposed. This paper is focused on linear systems diagnostics.
TC10 Workshop 2013
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Jan Breuer, Vojtěch Vigner, Jaroslav Roztocil
Node synchronization can be implemented in an Ethernet network using time protocols; e.g. IEEE 1588. Active network components like switches and routers influence a precision of the synchronization because they affect the packet delay in the network. Therefore, the delay is not constant and also the delay in one direction is not equal to the delay in the opposite direction. This paper presents a low-cost device that can precisely measure the packet delay in both communication directions and, at the same time, calculate network parameters; e.g. the packet delay variation, the path asymmetry...
TC10 Workshop 2013
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Dariusz Załeski, Romuald Zielonko
The paper concerns the testing of analogue circuits and blocks in mixed-signal electronic embedded systems (EESs), using the built-in self-test (BIST) technique. The integrated μBIST based on reusing signal blocks already present in an EES, such as processors, memories, ADCs, is presented. The novelty of the solution is the extended functionality of the μBIST. It can perform 2 testing functions: functional testing and fault diagnosis on the level of localization of a faulty element. For functional testing, the complementary signals (CSs), and for fault diagnosis the SBT vocabulary techniques...
TC10 Workshop 2013
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Maciej Orman, Cajetan T. Pinto
This paper presents a method of acoustic analysis of electric motors in noisy industrial environment. Acoustic signals were measured by the microphones arrays called acoustic camera. Measurements by acoustic camera allow localization of sound source and by that separate sounds of interests from background noise. Results of acoustic analysis are compared with vibration measurements. Vibration monitoring is a well-known technique used in condition monitoring and in this work vibration measurements were used as a reference signal for assessment of the value of acoustic measurements. Vibration...
TC10 Workshop 2013
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Lauryna Šiaudinyte, Deividas Sabaitis, Domantas Brucas
Precision angle measurements are widely used in manufacturing circular scales which are the main component of angle encoders. Accuracy of such encoders have a great impact on production quality, costs and pace in various fields of activity. Therefore accuracy control leads to improvement of production. To evaluate the accuracy of a scale it has to be test and compared to a standard reference. It is achieved through calibration process, requiring complex methodology and equipment. Therefore design of a new centering – leveling device is presented. Moreover, methods and means for encoder scale...
TC10 Workshop 2013
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