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Accuracy on the time-of-flight estimation for ultrasonic waves applied to non-destructive evaluation of standing trees: a comparative experimental study

Espinosa Luis, Bacca Jan, Prieto Flavio, Lasaygues Philippe, Brancheriau Loïc. 2018. Accuracy on the time-of-flight estimation for ultrasonic waves applied to non-destructive evaluation of standing trees: a comparative experimental study. Acta Acustica United with Acustica, 104 (3) : 429-439.

Article de revue ; Article de recherche ; Article de revue à facteur d'impact
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Url - éditeur : http://www.ingentaconnect.com/contentone/dav/aaua/2018/00000104/00000003/art00007

Quartile : Q3, Sujet : ACOUSTICS

Résumé : Time-of-flight measurement is a critical step to perform ultrasonic non-destructive testing of standing trees, with direct influence on the precision of defect detection. Aiming to increase the accuracy on the estimation, the characteristics of the ultrasonic measurement chain should be adapted to the constraints of wood testing in living condition. This study focused on the excitation signal parameters, such as shape, temporal duration, and frequency response, and then the selection of a suitable time-of-flight determination technique. A standing plane tree was tested, placing ultrasonic receivers at four different positions, with five different excitation signals and three time-of-flight detection methods. The proposed ultrasonic chain of measurement resulted in high signal-to-noise ratios in received signals for all configurations. A time-frequency analysis was used to determine the power distribution in the frequency domain, showing that only chirp signal could concentrate the power around the resonant frequency of the sensor. Threshold and Akaike information criterion method performed similar for impulsive signals with decreasing uncertainty as sensor position approached to the radial direction. Those two methods failed to accurate determine time-of-flight for Gaussian pulse and chirp signals. Cross-correlation was only suitable for the chirp signal, presenting the lower uncertainty values among all configurations.

Mots-clés Agrovoc : bois, arbre forestier, technique ultrason, propriété physicochimique, propriété acoustique, vitesse, expérimentation, mesure (activité), simulation, Platanus

Mots-clés complémentaires : Méthode non destructive, Platanus acerifolia

Classification Agris : K50 - Technologie des produits forestiers
U30 - Méthodes de recherche

Champ stratégique Cirad : Axe 2 (2014-2018) - Valorisation de la biomasse

Auteurs et affiliations

  • Espinosa Luis, Universidad Nacional de Colombia (COL) - auteur correspondant
  • Bacca Jan, Universidad Nacional de Colombia (COL)
  • Prieto Flavio, Universidad Nacional de Colombia (COL)
  • Lasaygues Philippe, CNRS (FRA)
  • Brancheriau Loïc, CIRAD-PERSYST-UPR BioWooEB (FRA) ORCID: 0000-0002-9580-7696

Source : Cirad-Agritrop (https://agritrop.cirad.fr/587930/)

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