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Your search keyword '"Madonna, Vincenzo"' showing total 172 results
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172 results on '"Madonna, Vincenzo"'

1. Management of anterior cruciate ligament revision in adults: the 2022 ESSKA consensus part III—indications for different clinical scenarios using the RAND/UCLA appropriateness method

Author

Tischer, Thomas, Andriolo, Luca, Beaufils, Philippe, Ahmad, Sufian S., Bait, Corrado, Bonomo, Marco, Cavaignac, Etienne, Cristiani, Riccardo, Feucht, Matthias J., Fiodorovas, Markas, Grassi, Alberto, Helmerhorst, Gijs, Hoser, Christian, Karahan, Mustafa, Komnos, George, Lagae, Koen Carl, Madonna, Vincenzo, Monaco, Edoardo, Monllau, Juan Carlos, Ollivier, Matthieu, Ovaska, Mikko, Petersen, Wolf, Piontek, Tomasz, Robinson, James, Samuelsson, Kristian, Scheffler, Sven, Sonnery-Cottet, Bertrand, Filardo, Giuseppe, and Condello, Vincenzo

Published
2023
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5. Physics of failure as a technology enabler for electrical machines in transportation : reliability-oriented design of low voltage insulation systems

Author

Madonna, Vincenzo

Subjects
621.31, TJ Mechanical engineering and machinery
Abstract

In modern electrical machines there is an-ever-increasing push towards high power density and efficiency, which are thus considered as main design objectives. On the other hand, electrical machines used in certain applications, such as in the transport industry, are also required to be highly reliable and robust. In order to achieve the much needed power density performances, “extra” stresses are being experienced by the insulation systems of these machines, often resulting in accelerated components degradation and compromised system-level reliability figures. In general, the lifetime consumption evaluation and the reliability assessment of electrical machines components, including the insulation system, are still evaluated through outdated methods. These are often based on historical data and adopt constant failure rates, derived by statistically post-processing the failure times of a large number of built prototypes. This is of course a very time-consuming and expensive process. In application fields such as automotive and aerospace, the reliability assessment procedures can then negatively affect the development timeline of an electrical product, especially for certification. This Thesis therefore argues for the development of new processes, based on comprehensive physics of failure methodologies, for assessing the lifetime consumption and degradation of insulation systems for electrical machines. This will enable the electrical machine designer to make reliability considerations a main design objective, right from the very start of the design process. As a result of this work, this Thesis also shows how the proposed advanced philosophy will allow manufacturers to design insulation systems without relying on outdated, traditional “safety factors” and over-engineering concepts. The proposed processes focus on the development of new lifetime prediction models for electrical machines. The core of the Thesis is focused on thermal considerations and stresses. The novel models, developed in this work, seek to achieve significant improvements in terms of accuracy of lifetime prediction, by combining the cumulative damage law with the conventional Arrhenius model. The Thesis also includes considerations on partial discharges and ensuing insulation electrical stresses.

Published
2020

11. Italian consensus statement for the use of allografts in ACL reconstructive surgery

Author

Bait, Corrado, Randelli, Pietro, Compagnoni, Riccardo, Ferrua, Paolo, Papalia, Rocco, Familiari, Filippo, Tecame, Andrea, Adravanti, Paolo, Adriani, Ezio, Arnaldi, Enrico, Benazzo, Franco, Berruto, Massimo, Bonaspetti, Giovanni, Canata, Gian Luigi, Canè, Pier Paolo, Causero, Araldo, Coari, Giancarlo, Denti, Matteo, Farè, Maristella, Ferretti, Andrea, Fravisini, Marco, Giron, Francesco, Gobbi, Alberto, Madonna, Vincenzo, Manunta, Andrea, Mariani, Pier Paolo, Mazzola, Claudio, Milano, Giuseppe, Pederzini, Luigi, Quaglia, Flavio, Ronga, Mario, Schönhuber, Herbert, Stefani, Giacomo, Volpi, Piero, Zanon, Giacomo, Zini, Raul, Zorzi, Claudio, and Zaffagnini, Stefano

Published
2019
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15. Prospective multi-centre study on a composite ceramic femoral component in total knee arthroplasty: Five-year clinical and radiological outcomes

Author

Bergschmidt, Philipp, Bader, Rainer, Ganzer, Dirk, Hauzeur, Christian, Lohmann, Christoph H., Krüger, Alexander, Rüther, Wolfgang, Tigani, Domenico, Rani, Nicola, Esteve, José Luis, Prats, Fernando Lopez, Zorzi, Claudio, Madonna, Vincenzo, Rigotti, Stefano, Benazzo, Francesco, Rossi, Stefano Marco Paolo, and Mittelmeier, Wolfram

Published
2015
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25. System Level Reliability Assessment of Short Duty Electric Drives for Aerospace

Author

Madonna, Vincenzo, Giangrande, Paolo, Harikumaran, Jayakrishnan, Buticchi, Giampaolo, and Galea, Michael

Subjects
Reliability, Insulation, Stress, Aircraft, Windings, Transportation, Multichip modules
Abstract

The reliability performance of electrical machines and power electronics converters are generally verified separately, even if the two components are meant to be part of the same electric drive. Depending on the application, however, it might be necessary that the whole drive fulfils a certain reliability target, which is pre-defined by the application itself. An appropriate design approach should involve joint efforts between machine and converter designers, so that the final product is as optimized as possible, while still satisfying reliability constraints. In this work, a system level reliability study for short duty electric drives is proposed and implemented, using an aerospace electromechanical actuator as case-study. Concepts of statistical post-processing for the lifetime prediction of power modules are discussed throughout. Additionally, accelerated lifetime tests on electrical machine windings are performed for predicting the motor insulation’s time to failure. For the short duty aerospace drive under investigation, i.e. case-study, it is finally verified that the power electronics converter represents the reliability bottleneck.

Published
2021

26. Investigation on combined effect of humidity–temperature on partial discharge through dielectric performance evaluation.

Author

Ji, Yatai, Giangrande, Paolo, Zhao, Weiduo, Madonna, Vincenzo, Zhang, He, Li, Jing, and Galea, Michael

Subjects
HUMIDITY, PARTIAL discharges, DIELECTRICS, FINITE element method, PHOTOMULTIPLIERS
Abstract

The humidity role in the partial discharge (PD) inception mechanism is quite challenging, especially when considering the environmental temperature. Indeed, there is no general rule to explain the humidity effect on the PD phenomenon. In this paper, the PD activity in inter‐turn insulation is experimentally investigated for different relative humidity (RH) conditions at three different ambient temperatures, that is, 30°C, 60°C, and 90°C. Partial discharge inception voltage (PDIV) is directly measured through a photomultiplier tube (PMT), whereas the tip‐up tests are performed aiming at monitoring both dissipation factor (tanδ) and insulation capacitance (IC). These extra measurements (diagnostic dielectric markers) allow better assessing the insulation status. The adoption of the tip‐up test enables the insulation properties measurement. Based on the tip‐up tests' findings, the interfacial polarization process starts at 75% RH under 60°C, while the high conductivity area is already formed at 75% RH when the ambient temperature is 90°C. The water film formation deduced from the tip‐up test is then used to explain the trend of PDIV, and the validity is further proved by finite element analysis (FEA). [ABSTRACT FROM AUTHOR]

Published
2023
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