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11 research outcomes, page 1 of 2
  • publication . Article . Conference object . 2020
    Open Access
    Authors:
    Andrea Iannelli; Mark H Lowenberg; Andres Marcos;
    Countries: United Kingdom, Switzerland
    Project: EC | FLEXOP (636307)

    The paper discusses an extension of μ (or structured singular value), a well-established technique from robust control for the study of linear systems subject to structured uncertainty, to nonlinear polynomial problems. Robustness is a multifaceted concept in the nonlin...

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  • publication . Article . 2020
    Open Access English
    Authors:
    Christos Andreades; Gian Piero Malfense Fierro; Michele Meo;
    Persistent Identifiers
    Country: United Kingdom
    Project: EC | NHYTE (723309)

    Abstract Structural health monitoring techniques (SHM) for material damage identification have demonstrated higher sensitivity and accuracy when relying on the assessment of nonlinear features exhibited in the material response under ultrasonic wave propagation. In this...

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  • publication . Article . 2019 . Embargo End Date: 01 Jan 2019
    Open Access English
    Authors:
    Iannelli, Andrea; Marcos, Andrés; Lowenberg, Mark;
    Publisher: ETH Zurich
    Countries: United Kingdom, Switzerland
    Project: EC | FLEXOP (636307)

    The Region of Attraction of an equilibrium point is the set of initial conditions whose trajectories converge to it asymptotically. This article, building on a recent work on positively invariant sets, deals with inner estimates of the ROA of polynomial nonlinear dynami...

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  • publication . Article . 2019
    Open Access English
    Authors:
    Michele Schirru; X. Li; M. Cadeddu; Rob Dwyer-Joyce;
    Persistent Identifiers
    Publisher: Elsevier
    Country: United Kingdom
    Project: EC | HERCULES-2 (634135)

    In-situ measurement of viscosity advances the field of rheology, and aides the development of sensing systems for condition and performance monitoring of lubricated mechanisms. Many lubricated mechanisms, such as journal bearings or seals, are characterised by three-lay...

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  • publication . Article . 2019 . Embargo End Date: 01 Jan 2019
    Open Access English
    Authors:
    Iannelli, Andrea; Marcos, Andres; Lowenberg, Mark;
    Publisher: ETH Zurich
    Countries: United Kingdom, Switzerland
    Project: EC | FLEXOP (636307)

    Two approaches to tackle the nonlinear robust stability problem of an aerospace system are compared. The first employs a combination of the describing function method and μ analysis, while the second makes use of integral quadratic constraints (IQCs). The model analyzed...

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  • publication . Article . 2019
    Open Access English
    Authors:
    Kita, Alban; Cavalagli, Nicola; Ubertini, Filippo;
    Persistent Identifiers
    Country: Italy
    Project: EC | HERACLES (700395)

    Abstract In recent years, the development of long-term structural health monitoring systems for preventive conservation of historic monumental buildings is receiving a growing trend of scientific interest. Nevertheless, the damage detection effectiveness of these system...

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  • publication . Part of book or chapter of book . 2018
    Closed Access
    Authors:
    Romain Le Néna; Alan Guégan; Benoit Rafine;
    Persistent Identifiers
    Publisher: Springer International Publishing
    Project: EC | HOLISHIP (689074)

    The design of complex systems such as aerospace or transportation systems is a difficult task. It usually involves several teams working in close collaboration, over extended periods of time, and it is a true challenge to demonstrate that the requirements for these syst...

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  • publication . Article . 2018
    Open Access
    Authors:
    Paul Zabbal; Guillemette Ribay; Bastien Chapuis; Julien Jumel;
    Persistent Identifiers
    Publisher: Acoustical Society of America (ASA)
    Country: France
    Project: EC | ComBoNDT (636494)

    International audience; Multichannel acquisition of ultrasonic guided waves can be used to extract dispersion curves, from the time-position domain $(t-x)$ to the frequency-wavenumber $(f-k)$, or frequency-velocity domain $(f-c)$. Accurate measurements are needed in ord...

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  • publication . Article . 2018
    Open Access
    Authors:
    Dyrwal, Artur; Meo, Michele; Ciampa, Francesco;
    Persistent Identifiers
    Country: United Kingdom
    Project: EC | EXTREME (636549)

    Over the years, traditional active infrared thermography has played a pivotal role in ensuring that a component is free of any damage. However, whilst optical thermography is still not sufficiently sensitive to the presence of material micro-flaws, current vibro-thermog...

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  • publication . Preprint . Article . 2017
    Open Access English
    Authors:
    Kai Wang; Vasilis A. Riziotis; Spyros G. Voutsinas;
    Publisher: Copernicus Publications
    Project: EC | AVATAR (608396), EC | INNWIND.EU (308974)

    Abstract. Wind turbine rotors in idling operation mode can experience high angles of attack within the post-stall region that are capable of triggering stall-induced vibrations. The aim of the present paper is to extend the existing knowledge on the dynamics and aerodyn...

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11 research outcomes, page 1 of 2