Marco Tarabini, Luca Cornolti, Bortolino Saggin, Hermes Giberti, Diego Scaccabarozzi
This work was motivated from finding a complementary way of tuning and controlling the machine parameters of Injection Stretch Blow Molding process. In the current approach, a specialized technician detects the bottle defects by visual inspection and corrects the machine parameters using its own experience or indications obtained by previous statistical analyses. As all human based operations, inherent limitations are that the results are influenced by the operator skills; in addition, the experience can be hardly converted into a database, which could be used for the process optimization....
TC10 Workshop on Technical Diagnostics 2016
· TC10
· 2016
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Pingyu Zhu, Zhichao Yang, Wei Shi , Yongjing Li
Owing to the anisotropy of composite laminates, local responses happens at periphery of the drilled hole even under the same loads. The strain measurement is probably the most sensitive and better option to detect and quantify delamination inside composite materials. In the paper, dynamic strain of the composite laminates was online monitored using fiber Bragg grating (FBG) and strain gauges. Two experiments with different sensors configurations on the specimen made of glass fiber reinforced polymers (GFRP) were conducted: mounted on the entrance and the exit side of the drilled hole. The...
TC10 Workshop on Technical Diagnostics 2016
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· 2016
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Tore Leikanger, Juha Häkkinen, Christian Schuss
In this paper, a new approach to communicate with inter-integrated circuit (I2C) enabled circuits such as sensors, over Near Field Communication (NFC) is presented and evaluated. The NFC-to-I2C interface was designed using a non-standard NFC command to control the I2C bus directly from a smartphone, which was controlling both read and write operations on the I2C bus. The NFC-to-I2C interface was reporting back the data bytes on the bus to the smartphone when the transaction was done. This system was tested in action both with write and read requests to a commercial microcontroller featuring...
TC10 Workshop on Technical Diagnostics 2016
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Giulio D'Emilia, David Di Gasbarro, Emanuela Natale
A methodology is presented able to continuously check the settings of a vision system for automatic geometrical measurement of welding, having a complicated shape. The simple optical measurement system is based on a laser sheet. The set calibration methodology allows the measurement system to reach level of uncertainty adequate for automatic dimensional checking of welding, even though a simple measurement system is used. The effect of varying the lighting conditions has been carefully studied, that is a relevant cause of uncertainty. The method appears very sensitive to little deviations...
TC10 Workshop on Technical Diagnostics 2016
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· 2016
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Andrea Caviglia, Micaela Caserza Magro, Paolo Pinceti, Marco Antonelli, Enrico De Paola, Enrico Marino
Industrial Companies must avoid productivity losses due to low availability of equipment and machinery that cause high maintenance costs. In response to this concern, Companies try improving their maintenance policies over the years. Increasing the effectiveness of maintenance implies switching from simply reacting to machinery breakdowns (corrective maintenance - CM), to executing timebased preventive maintenance (PM). Today’s emphasis is on the ability of detecting early degradation through condition based maintenance (CBM) practices. Each policy offers a different level of performances,...
TC10 Workshop on Technical Diagnostics 2016
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· 2016
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Ibryaeva Olga
A new method for the evaluation of the Taylor coefficients in the Pade-Laplace method is proposed. It is based on replacing a signal (with noise) in the integrals defining Taylor coefficients with its (smoothing) cubic spline. This makes possible to carry out integration exactly and avoid numerical integration errors. The proposed method gives more accurate results at some center points of Taylor series expansion compared to the trapezoidal rule and Simpson’s rule.
TC10 Workshop on Technical Diagnostics 2016
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· 2016
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Luigino Benetazzo, Matteo Bertocco, Umberto Bovo, Guglielmo Frigo, Maria Paola Genovese, Claudio Narduzzi
Wood is widely employed to support aerial cables for electrical energy and telecommunication networks. Being a natural material, it is subject to decay, which requires periodic structural inspections. This paper present the metrological analysis of a vibration-based pole testing system, taking into account different contributions to uncertainty as well as the effects of natural variability of wood properties. The study allows to evidence the main features and intrinsic limits of the test approach and shows how performance bounds have been evaluated.
TC10 Workshop on Technical Diagnostics 2016
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· 2016
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Francesco Bertocci, Marco Mugnaini, Ada Fort, Valerio Vignoli, Laura Spicciarelli
In this paper the modeling of an industrial bakery plant aimed at evaluating its Reliability and Availability is described. In order to individuate the production capabilities and the weak points of an complex high-tech food production plant, the authors obtained the prediction of the reliability of the production line by considering sub-systems and apparatus. In this context a complex Reliability Block Diagram (RBD) of the production site has been built from components and from operative steps. The analysis is aimed at providing a strategy for the implementation and improvement of the...
TC10 Workshop on Technical Diagnostics 2016
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· 2016
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Morris Brenna, Federica Foiadelli, Michela Longo, Dario Zaninelli
The goodness of the current collection of the pantograph from the contact line in railway vehicles requires many analyses on the dynamics of their interaction. To this purpose, it is necessary a monitoring system that is able to control the sensitive parameters that describe the real status of the components involved. The scope of this research is framed in the context of the systems for the monitoring of the contact line and its interaction with the pantograph due to the running of trains in 3,000 VDC railway lines. In particular, the optical technology is proposed for the measuring of the...
TC10 Workshop on Technical Diagnostics 2016
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· 2016
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Francesco Bertocci, Marco Mugnaini, Ada Fort, Valerio Vignoli
Modern power systems require high reliability and availability standards in order to meet customer final expectations and market needs. In this context it is quite obvious that modern uninterruptible power supply (UPS) have started developing improvement strategies to achieve higher availability figures over time. At the same time power, dimension and performance constraints continued to be pushed up placing tight barriers to developers. UPS developers started therefore to design distributed systems where different functions could be allocated to different control board sections enhancing in...
TC10 Workshop on Technical Diagnostics 2016
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· 2016
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