Variación longitudinal en densidad, resistencia a flexión y rigidez de la madera 'de seda' persa
Vertical variation of density, flexural strength and stiffness of Persian silk woodThe aim of this research was to investigate the effects of longitudinal position (stem height) and heart-sapwood on density, modulus of elasticity (MOE) and modulus of rupture (MOR) in bending for Persian silk wood (A...
| Những tác giả chính: | , |
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| Định dạng: | Online |
| Ngôn ngữ: | eng |
| Được phát hành: |
Instituto de Ecología, A.C.
2016
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| Truy cập trực tuyến: | https://myb.ojs.inecol.mx/index.php/myb/article/view/484 |
| _version_ | 1799769233350983680 |
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| author | Kiaei, Majid Farsi, Mohammad |
| author_facet | Kiaei, Majid Farsi, Mohammad |
| author_sort | Kiaei, Majid |
| collection | MYB |
| description | Vertical variation of density, flexural strength and stiffness of Persian silk woodThe aim of this research was to investigate the effects of longitudinal position (stem height) and heart-sapwood on density, modulus of elasticity (MOE) and modulus of rupture (MOR) in bending for Persian silk wood (Albizzia julibrissin). Five normal trees were selected from the Guilan region, Iran. Samples for testing were prepared at four stem height levels (5%, 25%, 50% and 75% of total stem height) in both positions along radial direction (heartwood and sapwood). Analysis of variance results (Anova) indicated that the effects of longitudinal position (stem height) and heartwood-sapwood on the wood density, MOE and MOR were significant. The mean of wood density, MOE and MOR along longitudinal position from base to top decreased with height. The mean of wood density, MOR and MOE in sapwood are lower compared to the corresponding values for heartwood. The relationship between wood density and mechanical strength properties were analyzed by regression models. A positive correlation was found between wood density with MOE and MOR in both heartwood and sapwood. |
| format | Online |
| id | oai:oai.myb.ojs.inecol.mx:article-484 |
| institution | Madera y Bosques |
| language | eng |
| publishDate | 2016 |
| publisher | Instituto de Ecología, A.C. |
| record_format | ojs |
| spelling | oai:oai.myb.ojs.inecol.mx:article-4842022-11-30T05:37:27Z Variación longitudinal en densidad, resistencia a flexión y rigidez de la madera 'de seda' persa Vertical variation of density, flexural strength and stiffness of Persian silk wood Kiaei, Majid Farsi, Mohammad Albizzia julibrissin modulus of elasticity modulus of rupture radial direction stem height Albizzia julibrissin modulus of elasticity modulus of rupture dirección radial altura del árbol Vertical variation of density, flexural strength and stiffness of Persian silk woodThe aim of this research was to investigate the effects of longitudinal position (stem height) and heart-sapwood on density, modulus of elasticity (MOE) and modulus of rupture (MOR) in bending for Persian silk wood (Albizzia julibrissin). Five normal trees were selected from the Guilan region, Iran. Samples for testing were prepared at four stem height levels (5%, 25%, 50% and 75% of total stem height) in both positions along radial direction (heartwood and sapwood). Analysis of variance results (Anova) indicated that the effects of longitudinal position (stem height) and heartwood-sapwood on the wood density, MOE and MOR were significant. The mean of wood density, MOE and MOR along longitudinal position from base to top decreased with height. The mean of wood density, MOR and MOE in sapwood are lower compared to the corresponding values for heartwood. The relationship between wood density and mechanical strength properties were analyzed by regression models. A positive correlation was found between wood density with MOE and MOR in both heartwood and sapwood. The aim of this research was to investigate the effects of longitudinal position (stem height) and heart-sapwood on density, modulus of elasticity (MOE) and modulus of rupture (MOR) in bending for Persian silk wood (Albizzia julibrissin). Five normal trees were selected from the Guilan region, Iran. Samples for testing were prepared at four stem height levels (5%, 25%, 50% and 75% of total stem height) in both positions along radial direction (heartwood and sapwood). Analysis of variance results (Anova) indicated that the effects of longitudinal position (stem height) and heartwood-sapwood on the wood density, MOE and MOR were significant. The mean of wood density, MOE and MOR along longitudinal position from base to top decreased with height. The mean of wood density, MOR and MOE in sapwood are lower compared to the corresponding values for heartwood. The relationship between wood density and mechanical strength properties were analyzed by regression models. A positive correlation was found between wood density with MOE and MOR in both heartwood and sapwood.Variación longitudinal en densidad, resistencia a flexión y rigidez de la madera 'de seda' persaEl objeto de esta onvestigación fue estudiar los efectos de la posición en dirección longitudinal (altura del tronco) y del duramen y la albura sobre la densidad, el módulo de elasticidad (MOE) y el módulo de ruptura (MOR) en flexión para la madera de ‘seda’ persa (Albizzia julibrissin). Se recolectaron cinco árboles representativos de la región de Guilan, Irán. Se elaboraron especímenes para prueba a cuatro niveles de la altura del árbol (5%, 25%, 50% y 75% de la altura total del tronco) en ambos tipos de madera en la dirección radial (duramen y albura). Los resultados de los análisis de varianza (Andeva) indicaron que los efectos de la ubicación longitudinal (altura del árbol) y duramen y albura sobre la densidad de la madera, el MOE y el MOR fueron significativos. Los valores promedio de la densidad, MOE y MOR a lo largo de la posición longitudinal de la base a la copa disminuyeron con la altura. Los valores promedio de la densidad, MOR y MOE en albura son menores comparados con los del duramen. La relación entre la densidad de la madera y las propiedades mecánicas se analizaron por medio de modelos de regresión. Se encontró una correlación positive entre la densidad de la madera con MOE y MOR tanto en duramen como en albura. Instituto de Ecología, A.C. 2016-05-11 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo evaluado por pares application/pdf text/html https://myb.ojs.inecol.mx/index.php/myb/article/view/484 10.21829/myb.2016.221484 Madera y Bosques; Vol. 22 No. 1 (2016): Primavera Madera y Bosques; Vol. 22 Núm. 1 (2016): Primavera 2448-7597 1405-0471 eng https://myb.ojs.inecol.mx/index.php/myb/article/view/484/659 https://myb.ojs.inecol.mx/index.php/myb/article/view/484/672 Derechos de autor 2016 Madera y Bosques |
| spellingShingle | Kiaei, Majid Farsi, Mohammad Variación longitudinal en densidad, resistencia a flexión y rigidez de la madera 'de seda' persa |
| title | Variación longitudinal en densidad, resistencia a flexión y rigidez de la madera 'de seda' persa |
| title_full | Variación longitudinal en densidad, resistencia a flexión y rigidez de la madera 'de seda' persa |
| title_fullStr | Variación longitudinal en densidad, resistencia a flexión y rigidez de la madera 'de seda' persa |
| title_full_unstemmed | Variación longitudinal en densidad, resistencia a flexión y rigidez de la madera 'de seda' persa |
| title_short | Variación longitudinal en densidad, resistencia a flexión y rigidez de la madera 'de seda' persa |
| title_sort | variación longitudinal en densidad, resistencia a flexión y rigidez de la madera 'de seda' persa |
| url | https://myb.ojs.inecol.mx/index.php/myb/article/view/484 |
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