Tension and bending tests in roots of two tropical species
Plant roots help to avoid soil loss since they form meshes that retain it, especially in sandy soils with low cohesion. However, technical documentation over the execution of tests to characterize roots is scarce; therefore, a detailed approach is required in order to perform reliable studies. The o...
| Main Authors: | , , , |
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| Format: | Online |
| Jezik: | spa |
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Instituto de Ecología, A.C.
2020
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| Online dostop: | https://myb.ojs.inecol.mx/index.php/myb/article/view/e2621716 |
| _version_ | 1799769355373772800 |
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| author | Valdés-Rodríguez, Ofelia Andrea Jimenez Alonso, Ángel Eduardo Servín Martínez, Alberto Tejero-Andrade, José |
| author_facet | Valdés-Rodríguez, Ofelia Andrea Jimenez Alonso, Ángel Eduardo Servín Martínez, Alberto Tejero-Andrade, José |
| author_sort | Valdés-Rodríguez, Ofelia Andrea |
| collection | MYB |
| description | Plant roots help to avoid soil loss since they form meshes that retain it, especially in sandy soils with low cohesion. However, technical documentation over the execution of tests to characterize roots is scarce; therefore, a detailed approach is required in order to perform reliable studies. The objectives of this work are to document and characterize the mechanical properties of the roots of two tropical species through tension and bending tests. To this end, special devices were designed to hold roots of Jatropha curcas L. and Ricinus communis L. extracted from sandy soils. The roots were subjected to tension and bending tests and their corresponding modulus of Young were estimated, as the maximum bending stresses. The Young tension moduli varied between 6.27 MPa to 334 MPa for Ricinus and 4.56 MPa to 271 MPa for Jatropha, with diameters between 0.5 mm and 6.8 mm for both species; during the bending tests, the roots never reached the breaking point, but they registered maximum stress values of 21 MPa and 28 MPa for Ricinus and Jatropha respectively. It is concluded that roots of Jatropha and Ricinus have low moduli of elasticity values, similar to other herbs and trees roots, with a very high flexibility, comparable to low density polyethylene. |
| format | Online |
| id | oai:oai.myb.ojs.inecol.mx:article-1716 |
| institution | Madera y Bosques |
| language | spa |
| publishDate | 2020 |
| publisher | Instituto de Ecología, A.C. |
| record_format | ojs |
| spelling | oai:oai.myb.ojs.inecol.mx:article-17162024-03-20T00:29:35Z Tension and bending tests in roots of two tropical species Ensayos de tensión y flexión en raíces de dos especies tropicales Valdés-Rodríguez, Ofelia Andrea Jimenez Alonso, Ángel Eduardo Servín Martínez, Alberto Tejero-Andrade, José Jatropha curcas Ricinus communis Young modulus sandy soils Jatropha curcas módulo de Young Ricinus communis suelos arenosos Plant roots help to avoid soil loss since they form meshes that retain it, especially in sandy soils with low cohesion. However, technical documentation over the execution of tests to characterize roots is scarce; therefore, a detailed approach is required in order to perform reliable studies. The objectives of this work are to document and characterize the mechanical properties of the roots of two tropical species through tension and bending tests. To this end, special devices were designed to hold roots of Jatropha curcas L. and Ricinus communis L. extracted from sandy soils. The roots were subjected to tension and bending tests and their corresponding modulus of Young were estimated, as the maximum bending stresses. The Young tension moduli varied between 6.27 MPa to 334 MPa for Ricinus and 4.56 MPa to 271 MPa for Jatropha, with diameters between 0.5 mm and 6.8 mm for both species; during the bending tests, the roots never reached the breaking point, but they registered maximum stress values of 21 MPa and 28 MPa for Ricinus and Jatropha respectively. It is concluded that roots of Jatropha and Ricinus have low moduli of elasticity values, similar to other herbs and trees roots, with a very high flexibility, comparable to low density polyethylene. Las raíces de las plantas permiten evitar la pérdida del suelo al formar mallas que lo retienen, especialmente en suelos arenosos debido a la poca cohesión de estos sustratos; sin embargo, la literatura técnica sobre la ejecución de las pruebas para caracterizar raíces es escasa, por lo que se requiere documentar su caracterización. Los objetivos de este trabajo fueron documentar y caracterizar las propiedades mecánicas de dos raíces de especies tropicales mediante pruebas de tensión y flexión. Para ello se diseñaron dispositivos especiales para sujetar raíces de Jatropha curcas L. y Ricinus communis L. extraídas de suelos arenosos. Las raíces se sometieron a pruebas de tensión y flexión y se estimaron sus módulos de Young en tensión, así como los esfuerzos máximos de flexión. Los módulos de Young en tensión obtenidos variaron en intervalos de 6.27 MPa a 334 MPa para R. comunis y de 4.56 MPa a 271 MPa para J. curcas, con diámetros entre 0.5 mm y 6.8 mm para ambas especies; en las pruebas de flexión las raíces nunca alcanzaron el punto de ruptura, pero los esfuerzos máximos registrados fueron de 21 MPa y 28 MPa, para Ricinus y Jatropha, respectivamente. Se concluye que las raíces de Jatropha y Ricinus poseen módulos de elasticidad muy bajos, similares a otras raíces de especies herbáceas y arbóreas, con una muy alta flexibilidad y comparables con las propiedades del polietileno de baja densidad. Instituto de Ecología, A.C. 2020-06-17 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo evaluado por pares application/pdf text/xml https://myb.ojs.inecol.mx/index.php/myb/article/view/e2621716 10.21829/myb.2020.2621716 Madera y Bosques; Vol. 26 No. 2 (2020): Verano 2020 Madera y Bosques; Vol. 26 Núm. 2 (2020): Verano 2020 2448-7597 1405-0471 spa https://myb.ojs.inecol.mx/index.php/myb/article/view/e2621716/2093 https://myb.ojs.inecol.mx/index.php/myb/article/view/e2621716/2203 10.21829/myb.2017.233253 Derechos de autor 2020 Madera y Bosques http://creativecommons.org/licenses/by-nc-sa/4.0 |
| spellingShingle | Valdés-Rodríguez, Ofelia Andrea Jimenez Alonso, Ángel Eduardo Servín Martínez, Alberto Tejero-Andrade, José Tension and bending tests in roots of two tropical species |
| title | Tension and bending tests in roots of two tropical species |
| title_full | Tension and bending tests in roots of two tropical species |
| title_fullStr | Tension and bending tests in roots of two tropical species |
| title_full_unstemmed | Tension and bending tests in roots of two tropical species |
| title_short | Tension and bending tests in roots of two tropical species |
| title_sort | tension and bending tests in roots of two tropical species |
| url | https://myb.ojs.inecol.mx/index.php/myb/article/view/e2621716 |
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