Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Non destructive evaluation procedure for structural grading of sawn timber: preliminary works in Spain
Year:2012
Research Areas
  • Civil engineering,
  • Construction of buildings,
  • Rehabilitation of buildins
Information
Abstract
Good results in terms of material properties evaluation using non destructive techniques (NDT) have been achieved since decades ago. In Spain, during the last ten years, several research works conducted by different research groups using NDT for the evaluation of timber properties have been carried out. Those research studies have concluded different methodologies for Spanish timber species and proposed correlations between non destructive values and mechanical properties. Conclusions of these works are not always directly comparable because of the different procedures. A common procedure within the NDT field for the use of these techniques in the evaluation of large cross section timber properties in Spanish species is necessary. The main objective of this paper is to present the preliminary works conducted in order to achieve this objective. NDT parameters have been measured in the main structural Spanish sawn timber species: radiata pine (Pinus radiata D. Don.), Scots pine (Pinus sylvestris L.), laricio pine (Pinus nigra Arn. Ssp. salzmannii), maritime pine (Pinus pinaster Ait.) and sweet chestnut (Castanea sativa Mill.). Commercial equipments and techniques applied were: Sylvatest Duo and Trio (ultrasonic wave technique), Microsecond Timer (stress wave technique), Hitman and PLG (vibration analysis technique), Pilodyn 6J Forest (penetration resistance) and SWRM (screw withdrawal force technique). Compilation of NDT results of those species and equipments is being made. A data sheet to collect all the data has been designed taking into account tests procedures and adjustment factors as: moisture content, slope of grain, length, etc. Some of the obtained results and statistical analyses are presented. Additionally, a NDT preliminary protocol is presented in order to standardize the test procedures and to homogenize the data analysis.
International
Si
Congress
2012 IUFRO Conference. Division 5. Forest Products
960
Place
Estoril (Portugal)
Reviewers
Si
ISBN/ISSN
978-82-311-0136-9
Start Date
08/07/2012
End Date
13/07/2012
From page
114
To page
114
Final program, proceedings and abstracts book
Participants
  • Autor: Daniel Fernandez Llana (UPM)
  • Autor: Guillermo Iñiguez Gonzalez (UPM)
  • Autor: María José Montero García-Andrade (UPM)
  • Autor: Francisco Arriaga Martitegui (UPM)
  • Autor: Miguel Esteban Herrero (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Construcción con Madera
  • Departamento: Construcción y Vías Rurales
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