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Excitation and Deconvolution in Ultrasound Nondestructive Testing Systems

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Ultrasonic Nondestructive Evaluation Systems

Abstract

The pulse-echo (PuE) model based on short pulses is introduced as a starting point. Its limits in terms of signal-to-noise ratio (SNR) are reviewed, together with the tradeoff between the excitation energy and the time resolution. It is shown how signal processing can improve the overall performance in terms of system sensitivity and resolution as long as the exciting waveform is chosen taking into account the system characteristics and is in agreement with the adopted processing techniques. The degrees of freedom on which one can operate are the time evolution law of the excitation signal and the processing technique adopted on the receiving end. In their exploitation, the designer should consider the physical characteristics of the hardware devices being employed in order to optimize the overall performance. The importance of introducing merit factors is discussed. By offering a quantitative measure of system performance, they are indispensable tools to drive formal optimization strategies and for comparing different approaches. Application-related merit factors are introduced for trying to overcome some current limitations and to prepare the ground for the extension of ultrasonic techniques to multiple input, multiple output (MIMO) systems, which are considered in the following chapter.

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Author information

Authors and Affiliations

  1. Advanced Research Center on Electronic Systems for Information and Communication Technologies “E. De Castro” (ARCES), University of Bologna, Bologna, Italy

    Salvatore Caporale

  2. School of Engineering, University of Warwick, Coventry, UK

    David Arthur Hutchins & Stefano Laureti

  3. Department of Engineering, Polo Scientifico Didattico di Terni, University of Perugia, Terni, Italy

    Pietro Burrascano & Marco Ricci

  4. Department of Electrical, Electronic and Information Engineering “G. Marconi” (DEI) and Advanced Research Center on Electronic Systems for Information and Communication Technologies “E. De Castro” (ARCES), University of Bologna, Bologna, Italy

    Sergio Callegari

  5. Dipartimento di Ingegneria, Polo Scientifico Didattico di Terni, University of Perugia, Terni, Italy

    Stefano Laureti

Authors
  1. Salvatore Caporale
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  2. Sergio Callegari
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  3. David Arthur Hutchins
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  4. Stefano Laureti
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  5. Pietro Burrascano
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  6. Marco Ricci
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Corresponding author

Correspondence to Salvatore Caporale .

Editor information

Editors and Affiliations

  1. Department of Engineering, Polo Scientifico Didattico di Terni, University of Perugia, Terni, Italy

    Pietro Burrascano

  2. Department of Electrical, Electronic and Information Engineering "G. Marconi" (DEI), Universita di Bologna, Bologna, Italy

    Sergio Callegari

  3. Dipartimento di Ingegneria Elettrica ed (DIEE), University of Cagliari, Cagliari, Italy

    Augusto Montisci

  4. Department of Engineering, Polo Scientifico Didattico di Terni, University of Perugia, Terni, Italy

    Marco Ricci

  5. Dipartimento di Ingegneria Civile, dell', Università Mediterranea di Reggio Calabria, Reggio Calabria, Italy

    Mario Versaci

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Caporale, S., Callegari, S., Hutchins, D., Laureti, S., Burrascano, P., Ricci, M. (2015). Excitation and Deconvolution in Ultrasound Nondestructive Testing Systems. In: Burrascano, P., Callegari, S., Montisci, A., Ricci, M., Versaci, M. (eds) Ultrasonic Nondestructive Evaluation Systems. Springer, Cham. https://doi.org/10.1007/978-3-319-10566-6_4

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  • DOI: https://doi.org/10.1007/978-3-319-10566-6_4

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-10565-9

  • Online ISBN: 978-3-319-10566-6

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