Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Time-of-Flight Adjustment Procedure for Acoustic Measurements in Structural Timber
Year:2016
Research Areas
  • Engineering,
  • Construction,
  • Construction of engineering
Information
Abstract
The effect of timber length on time-of-flight acoustic longitudinal measurements was investigated on the structural timber of four Spanish species: radiata pine (Pinus radiata D. Don), Scots pine (Pinus sylvestris L.), laricio pine (Pinus nigra Arn.), and maritime pine (Pinus pinaster Ait.). Time-of-flight longitudinal measurements were conducted on one hundred and twenty specimens of dimensions 90 × 140 mm using three commercially available acoustic instruments (Sylvatest Duo, USLab, and Microsecond Timer). Time-of-flight data were initially obtained from the full-length (4 m) specimens, and then from the specimens cut to 3, 2, and 1 meter in length by successively cutting off 0.5 m from each end. The acoustic longitudinal velocity of the timber specimens of different lengths was also measured using a resonance-based acoustic method. The apparent acoustic longitudinal velocity for all species increased linearly as the timber length decreased from 4 to 1 meter. Acoustic velocity determined from time-of-flight data was significantly higher than the acoustic velocity determined using the resonance method, indicating systematic measurement errors associated with the time-of-flight instruments. Empirical models were developed for the relationships between time-of-flight measurements on timber specimens and timber lengths in the range of 1 to 4 m. Finally, a procedure was proposed to correct the time-of-flight data.
International
Si
JCR
Si
Title
Bioresources
ISBN
1930-2126
Impact factor JCR
1,425
Impact info
Datos JCR del año 2014
Volume
10.15376/biores.11.2.3303-3317
Journal number
11 (2)
From page
3303
To page
3317
Month
MAYO
Ranking
Participants
  • Autor: Daniel Fernandez Llana (UPM)
  • Autor: Guillermo Iñiguez Gonzalez (UPM)
  • Autor: Francisco Arriaga Martitegui (UPM)
  • Autor: Xiping Wang (U.S. Forest Service, Forest Products Laboratory, Madison, WI, USA)
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)