The influence of sensor placement on in-situ ultrasound wave velocity measurement.

Arriaga Martitegui, Francisco and Fernandez Llana, Daniel and Martinez Lopez, Roberto and Esteban Herrero, Miguel and Iñiguez Gonzalez, Guillermo (2015). The influence of sensor placement on in-situ ultrasound wave velocity measurement.. In: "19th International Nondestructive Testing and Evaluation of Wood Symposium", September 22–25, 2015, Río de Janeiro. pp. 443-452.

Description

Title: The influence of sensor placement on in-situ ultrasound wave velocity measurement.
Author/s:
  • Arriaga Martitegui, Francisco
  • Fernandez Llana, Daniel
  • Martinez Lopez, Roberto
  • Esteban Herrero, Miguel
  • Iñiguez Gonzalez, Guillermo
Item Type: Presentation at Congress or Conference (Article)
Event Title: 19th International Nondestructive Testing and Evaluation of Wood Symposium
Event Dates: September 22–25, 2015
Event Location: Río de Janeiro
Title of Book: General Technical Report FPL-GTR-239 ? Proceedings: 19th International Nondestructive Testing and Evaluation of Wood Symposium
Date: 2015
Subjects:
Faculty: E.T.S.I. Montes (UPM)
Department: Ingeniería y Gestión Forestal y Ambiental
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Ultrasound wave velocity was measured in 30 pieces of Spanish Scots pine (Pinus sylvestris L.), 90 x 140 mm in cross-section and 4 m long. Five different sensor placement arrangements were used: end to end (V0), face to opposite face, edge to opposite edge, face to same face and edge to same edge. The pieces were successively shortened to 3, 2 and 1 m, in order to obtain these velocities and their ratios to reference value V0 for different lengths and angles with respect to the piece axis for the crossed measurements. The velocity obtained in crossed measurements is lower than V0. A correction coefficient for crossed velocities is proposed, depending on the angle, to adjust them to the V0 benchmark. The velocities measured on a surface, are also lower than V0, and their ratio with respect to V0 is close to 0.97 for distances equal to or greater than 18 times the depth of the beam.

More information

Item ID: 38399
DC Identifier: http://oa.upm.es/38399/
OAI Identifier: oai:oa.upm.es:38399
Deposited by: Memoria Investigacion
Deposited on: 24 Nov 2015 11:56
Last Modified: 06 Jun 2016 12:50
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