@InProceedings{8081660,
  author = {G. A. Guarneri and D. R. Pipa and F. Neves and L. V. R. {de Arruda}},
  booktitle = {2017 25th European Signal Processing Conference (EUSIPCO)},
  title = {A blind deconvolution approach to discontinuity location and characterization in ultrasonic nondestructive testing},
  year = {2017},
  pages = {2496-2500},
  abstract = {This paper presents a new algorithm for discontinuity location and characterization using A-scan signals from an ultrasonic inspection system. The algorithm is based on solving an inverse problem in which the observation model is different from that traditionally used. In this model, the input vector represents the location of the geometrical center of the discontinuity and the scattering amplitude of the discontinuity is embedded in the impulse response of the ultrasonic inspection system. First, we jointly estimate the locations and the scattering amplitudes of the discontinuities from the acquired signals. Then, the geometrical parameters of the discontinuities are calculated from the estimated scattering amplitude. The method is tested to characterize side-drilled holes using both synthetic and real data. The results demonstrates the effectiveness of the algorithm.},
  keywords = {deconvolution;inspection;inverse problems;nondestructive testing;transient response;ultrasonic materials testing;ultrasonic scattering;impulse response;side-drilled holes;scattering amplitude;A-scan signals;ultrasonic nondestructive testing;discontinuity location;blind deconvolution approach;ultrasonic inspection system;geometrical center;observation model;inverse problem;Signal processing algorithms;Synchronous digital hierarchy;Scattering;Transducers;Acoustics;Approximation algorithms;Europe},
  doi = {10.23919/EUSIPCO.2017.8081660},
  issn = {2076-1465},
  month = {Aug},
  url = {https://www.eurasip.org/proceedings/eusipco/eusipco2017/papers/1570342793.pdf},
}

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R."],"bibdata":{"bibtype":"inproceedings","type":"inproceedings","author":[{"firstnames":["G.","A."],"propositions":[],"lastnames":["Guarneri"],"suffixes":[]},{"firstnames":["D.","R."],"propositions":[],"lastnames":["Pipa"],"suffixes":[]},{"firstnames":["F."],"propositions":[],"lastnames":["Neves"],"suffixes":[]},{"firstnames":["L.","V.","R."],"propositions":["de Arruda"],"lastnames":[],"suffixes":[]}],"booktitle":"2017 25th European Signal Processing Conference (EUSIPCO)","title":"A blind deconvolution approach to discontinuity location and characterization in ultrasonic nondestructive testing","year":"2017","pages":"2496-2500","abstract":"This paper presents a new algorithm for discontinuity location and characterization using A-scan signals from an ultrasonic inspection system. The algorithm is based on solving an inverse problem in which the observation model is different from that traditionally used. In this model, the input vector represents the location of the geometrical center of the discontinuity and the scattering amplitude of the discontinuity is embedded in the impulse response of the ultrasonic inspection system. First, we jointly estimate the locations and the scattering amplitudes of the discontinuities from the acquired signals. Then, the geometrical parameters of the discontinuities are calculated from the estimated scattering amplitude. The method is tested to characterize side-drilled holes using both synthetic and real data. The results demonstrates the effectiveness of the algorithm.","keywords":"deconvolution;inspection;inverse problems;nondestructive testing;transient response;ultrasonic materials testing;ultrasonic scattering;impulse response;side-drilled holes;scattering amplitude;A-scan signals;ultrasonic nondestructive testing;discontinuity location;blind deconvolution approach;ultrasonic inspection system;geometrical center;observation model;inverse problem;Signal processing algorithms;Synchronous digital hierarchy;Scattering;Transducers;Acoustics;Approximation algorithms;Europe","doi":"10.23919/EUSIPCO.2017.8081660","issn":"2076-1465","month":"Aug","url":"https://www.eurasip.org/proceedings/eusipco/eusipco2017/papers/1570342793.pdf","bibtex":"@InProceedings{8081660,\n author = {G. A. Guarneri and D. R. Pipa and F. Neves and L. V. R. {de Arruda}},\n booktitle = {2017 25th European Signal Processing Conference (EUSIPCO)},\n title = {A blind deconvolution approach to discontinuity location and characterization in ultrasonic nondestructive testing},\n year = {2017},\n pages = {2496-2500},\n abstract = {This paper presents a new algorithm for discontinuity location and characterization using A-scan signals from an ultrasonic inspection system. The algorithm is based on solving an inverse problem in which the observation model is different from that traditionally used. In this model, the input vector represents the location of the geometrical center of the discontinuity and the scattering amplitude of the discontinuity is embedded in the impulse response of the ultrasonic inspection system. First, we jointly estimate the locations and the scattering amplitudes of the discontinuities from the acquired signals. 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