Experimental and numerical analysis of mixed I-214 Poplar/pinus sylvestris laminated timber subjected to bending loadings
The structural use of timber coming from fast growing and low-grade species such as poplar is one of the current challenges in the wood value chains, through the development of engineering products. In this work, a qualitative comparison of the behavior of mixed glued laminated timber made of pine i...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2020 |
| País: | España |
| Institución: | Consejo General de la Arquitectura Técnica de España (CGATE) |
| Repositorio: | RIARTE |
| OAI Identifier: | oai:www.riarte.es:20.500.12251/1908 |
| Acceso en línea: | http://hdl.handle.net/20.500.12251/1908 https://doi.org/10.3390/ma13143134 |
| Access Level: | acceso abierto |
| Palabra clave: | Resistencia a flexión Ensayos (propiedades o materiales) Material compuesto Ensayo No Destructivo (END) Pino silvestre Álamo (cultivo) Madera contralaminada Madera estructural Material de construcción Resistencia mecánica 3305.39 Construcciones de Madera 3312.08 Propiedades de Los Materiales 2211.02 Materiales Compuestos 3305.33 Resistencia de Estructuras 3312.12 Ensayo de Materiales 3312.09 Resistencia de Materiales 2304.11 Fibras Naturales 3305.32 Ingeniería de Estructuras 3106.05 Productos |
| Sumario: | The structural use of timber coming from fast growing and low-grade species such as poplar is one of the current challenges in the wood value chains, through the development of engineering products. In this work, a qualitative comparison of the behavior of mixed glued laminated timber made of pine in their outer layers and of poplar in their inner layers is shown and discussed. Single-species poplar and pine laminated timber have been used as control layouts. The investigation includes destructive four-point bending tests and three non-destructive methodologies: finite elements numerical model; semi-analytical model based on the Parallel Axes theorem and acoustic resonance testing. Anexcellent agreement between experimental and numerical results is obtained. Although few number of samples have been tested, the results indicate that the use of poplar as a low-grade species in the inner layers of the laminated timber can be a promising technology to decrease the weight of the timber maintaining the good mechanical properties of pine. Likewise, the need for the use of the shear modulus in both experimental measurements and numerical analysis is suggested, as well as the need to reformulate the vibration methodology for non-destructive grading in the case of mixed timber. © 2020 by the authors. |
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