Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
The influence of sensor placement on in-situ ultrasound wave velocity measurement
Year:2015
Research Areas
  • Civil engineering and architecture,
  • Civil engineering,
  • Construction of engineering
Information
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.
International
Si
Congress
19th International Nondestructive Testing and Evaluation of Wood Symposium
960
Place
Río de Janeiro
Reviewers
Si
ISBN/ISSN
00-0000-000-0
Start Date
23/09/2015
End Date
25/09/2015
From page
443
To page
452
General Technical Report FPL-GTR-239 ? Proceedings: 19th International Nondestructive Testing and Evaluation of Wood Symposium
Participants
  • Autor: Francisco Arriaga Martitegui (UPM)
  • Autor: Daniel Fernandez Llana (UPM)
  • Autor: Roberto Diego Martinez Lopez (UPM)
  • Autor: Miguel Esteban Herrero (UPM)
  • Autor: Guillermo Iñiguez Gonzalez (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Construcción con Madera
  • Departamento: Ingeniería y Gestión Forestal y Ambiental
S2i 2019 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)