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Memorias de investigación
Ponencias en congresos:
Neural network models for the establishment of a structural stress grading methodology using nondestructive techniques
Año:2013
Áreas de investigación
  • Ingeniería civil y arquitectura
Datos
Descripción
The objective of this work is the development of neural network (NN) models to establish a stress grading structural classification methodology by means of nondestructive techniques. Scots pine (Pinus sylvestris L.) wood is the object of study. Considering the suitability of applying NN models to grade timber beam specimens, the following input variables were considered for a series of NN models: wood provenance, real and nominal dimensions, beam length, visual grade, longitudinal vibration velocity, knot proportion on a section, depth of penetration, and screw withdrawal force. Output characteristics were global density, static MOE, modulus of rupture (MOR), and the three of them together. The models show acceptable figures for correlation results (ranging from 0.552 to 0.779), and performance values are good (ranging from 0.701 to 0.887). No model shows an equivalent result for correlation vs. performance values, but except for the global density model where only one good value was found. In a nutsell, the model showing the best correlation (or performance) is not necessarily the model showing the best performance (or correlation). The observed vs. predicted plots follow a 45° pattern, meaning a good approach for prediction. Further studies will include enlarging P. sylvestris data set, considering other species, studying the economic feasibility of the method, in-factory control, and environmental epigenomics and structural stress changes susceptibility.
Internacional
Si
Nombre congreso
18th International Nondestructive Testing and Evaluation of Wood Symposium
Tipo de participación
960
Lugar del congreso
Madison, Wisconsin, EEUU
Revisores
Si
ISBN o ISSN
00-0000-000-0
DOI
Fecha inicio congreso
24/09/2013
Fecha fin congreso
27/09/2013
Desde la página
808
Hasta la página
808
Título de las actas
Proceedings 18th International Nondestructive Testing and Evaluation of Wood Symposium. General Technical Report FPL-GTR-226. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: José L. García de Ceca (CIFOR-INIA)
  • Autor: Eva Hermoso Prieto (UPM)
  • Autor: Raquel Mateo Campos (UPM)
  • Autor: Guillermo Iñiguez Gonzalez (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Construcción con Madera
  • Departamento: Construcción y Vías Rurales
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