Michael Schmitz, Rainer Stark
To produce individual variants of a given product, each variant has to be assessed with respect to their mechanical integrity. This is usually done in the course of product design by assessing all required variants. However, during the lifetime of a product several changes of the existing variants occur or new variants will be created. In this paper a method is described how to integrate and automate the assessment of the mechanical integrity of the product variants directly into the production process by exploiting modern computer methods and automated set-up of state-of-the-art CAE...
TC10 Conference 2019
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Maik Frye, Robert Heinrich Schmitt
The increasing digitalization and industrial efforts towards artificial intelligence foster the use of Machine Learning (ML)-algorithms in the production environment. Within production, different application areas and use-cases arise for the usage of ML. In this paper, we focus on the implementation of ML- algorithms for a milling process where critical process conditions are predicted. Based on the predicted process conditions, the machining parameters can be adjusted in advance to avoid critical conditions of the process. The avoidance of critical process conditions increases the quality...
TC10 Conference 2019
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Michy Alice, Dejan Pejovski, Loredana Cristaldi
Predicting the future behaviour of an item or a complex system based on its past history is the aim of data-driven algorithms. In our paper, we present two algorithms for predicting the Remaining Useful Life (RUL) of industrial circuit breakers (CB) which make use of on-site collected data related to CB’s health condition. In the first algorithm, a sub- fleet of CBs is identified by applying the two-sample Kolmogorov-Smirnov Test which relies on statistical similarity between the observations. Once chosen the sub-fleet, the algorithm attempts to exploit correlations between the variation of...
TC10 Conference 2019
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Lukas Lingitz, Alexander Gaal, Thomas Ryback, Viola Gallina
There are always deviations between production planning and subsequent execution. These deviations are caused by uncertainties, e.g. inaccurate or insufficient planning data (e.g. data quality and availability), inappropriate planning and control systems or unforeseeable events. Production planners therefore use buffers in the form of inventories or extended transitional periods to create possibilities for implementing corrective measures in production control. Buffers, however, lead to increased coordination and control effort and to negative effects, e.g. on inventory, throughput time and...
TC10 Conference 2019
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Sergey Muravyov, Liudmila Khudonogova
To ensure the traceability of testing and diagnostic equipment it is necessary to provide a chain of comparisons connecting the equipment with primary standards of the SI units based on fundamental physical constants. The values of the constants are regularly determined by an adjustment procedure which requires consistency of input data and an assumed statistical model. In this paper, it is proposed to apply the developed interval fusion with preference aggregation (IF&PA) method for combining data and determining a consensus value of a fundamental constant. Due to its high robustness,...
TC10 Conference 2019
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L. L. Martins, M. C. Almeida, A. S. Ribeiro
This paper addresses the metrological quality of dimensional measurements based on images obtained from CCTV inspections in drain and sewer systems. In this type of indirect visual inspection, a significant number of absolute and relative dimensional quantities can be quantified, contributing to the characterization of the observations and, consequently, to the analysis of performance of drain and sewer systems outside buildings. Unfavourable environmental factors and conditions within the drain or sewer components affect estimation of the quantities of interest and the quality of the...
TC10 Conference 2019
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Yukio Hiranaka
The exact inverse solutions for real measurements are becoming realistic with the progress of computational performances. As an example, heat generation and release transients can be estimated from the temperature measurement if the thermal model is known. Although the inverse solver needs the correct knowledge of the target model, the method of backward simulation has a capability of determining the model structure and the model parameters by itself. A simple case of one heat source model has been shown as a successful example. In this paper, we describe an application of the method to a...
TC10 Conference 2019
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Giuliano Cipolletta, Antonio Delle Femine, Daniele Gallo, Carmine Landi, Mario Luiso
In order to enhance levels of security and reliability of power systems, allowing for advanced remote diagnostics, Merging Units (MUs) play a key role. Some of the benefits are a more efficient transmission of electricity and a better integration with renewable energy systems. In this paper an implementation of a Stand Alone Merging Unit (SAMU), compliant with the IEC 61850-9-2 standard and based on a low cost ARM microcontroller, is described. It acquires two signals, one voltage and one current, and it sends the samples over the Ethernet connection. A high-resolution analog to digital...
TC10 Conference 2019
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Yeying Chen, Giovanni D'Avanzo, Antonio Delle Femine, Daniele Gallo, Carmine Landi, Mario Luiso, Enrico Mohns
All the measurement tasks, f.i. metering, protection and diagnostics, in electricity distribution and trasmission grids need instrument transformers (ITs) to scale voltage and current down to levels compatible with measuring instruments. Inductive voltage and current transformers (VTs and CTs) are still the most used ITs; however, their behaviour in presence of disturbances is not fully assessed. This paper analyses the behavior of CTs in presence of amplitude modulations, which is one of the disturbance under which the performance of Phasor Measurement Units (PMUs) has to be assessed. A...
TC10 Conference 2019
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László Móricz, Zsolt János Viharos, András Németh, András Szépligeti
Based on their favourable mechanical features, applications of ceramics are continuously spreading in industrial environment. Such a good feature is their resistance against heat shock, so, currently they are applied e.g. as coating material for gas turbines. The main aims of the paper to follow the wearing process of the micro-milling tool during machining of ceramics and to compare it against the geometrical changes of the machined ceramic workpiece, applied as a special monitoring technique.
TC10 Conference 2019
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