Comparison of stiffness parameters of two kinds of date palm using nondestructive test
The goal of this study was to determine the modulus of elasticity and modulus of rapture of two kinds of date palm (Khasi and Hajmohammadi) using static bending and dynamic (flexural vibration) techniques. To reduce the difference between static and dynamic stiffness values, the static bending modul...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | fas |
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Regional Information Center for Science and Technology (RICeST)
2018-03-01
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| Series: | تحقیقات علوم چوب و کاغذ ایران |
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| Online Access: | http://ijwpr.areeo.ac.ir/article_115164_95b60b2d32f0443b277e6848916b3e78.pdf |
| _version_ | 1831723912128364544 |
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| author | Mohamad ali Sadatnia noshin sattari mehran roohnia mohsen bahmani |
| author_facet | Mohamad ali Sadatnia noshin sattari mehran roohnia mohsen bahmani |
| author_sort | Mohamad ali Sadatnia |
| collection | DOAJ |
| description | The goal of this study was to determine the modulus of elasticity and modulus of rapture of two kinds of date palm (Khasi and Hajmohammadi) using static bending and dynamic (flexural vibration) techniques. To reduce the difference between static and dynamic stiffness values, the static bending modulus of elasticity was modified by taking into account the value of the shear deflection. In addition to, for better understanding of the mechanical properties of date palm, values were compared with those measured for poplar samples. The results showed that, in Khasi the mean values of the modulus of elasticity obtained by flexural vibration, the static modulus of elasticity, the modified static modulus of elasticity and as well as the modulus of rapture were 47, 67,68 and 38% less than those measured for Hajmohammadi respectively. In comparing with date palm, values measured for poplar samples were more pronounced. The difference between dynamic and static values of modulus recorded for Khasi, Hajmohammadi and poplar samples were 63, 40 and 19% respectively. After modification of the static values, the difference was reduced in to 3% for Khasi, 6% for Hajmohammadi and 7 % for poplar experimental samples. Finally the significant correlation coefficients were found between the static and the dynamic modulus of elasticity for both two kinds of date palm. |
| first_indexed | 2024-12-21T04:11:43Z |
| format | Article |
| id | doaj.art-74057ef653a94b3eb0cd0ac2cf88a253 |
| institution | Directory Open Access Journal |
| issn | 1735-0913 2383-112X |
| language | fas |
| last_indexed | 2024-12-21T04:11:43Z |
| publishDate | 2018-03-01 |
| publisher | Regional Information Center for Science and Technology (RICeST) |
| record_format | Article |
| series | تحقیقات علوم چوب و کاغذ ایران |
| spelling | doaj.art-74057ef653a94b3eb0cd0ac2cf88a2532022-12-21T19:16:26ZfasRegional Information Center for Science and Technology (RICeST)تحقیقات علوم چوب و کاغذ ایران1735-09132383-112X2018-03-0133113314110.22092/ijwpr.2018.110641.1411115164Comparison of stiffness parameters of two kinds of date palm using nondestructive testMohamad ali Sadatnia0noshin sattari1mehran roohnia2mohsen bahmani3Assistant professor, Department of wood and paper science, Behbahan Khatam Al Anbia University of Technology, Behbahan, IranMS.c., student, Department of wood and paper science, Behbahan Khatam Al Anbia University of Technology, Behbahan, IranFull Professor, Department of wood and paper science, Karaj Branch, Islamic Azad University. Karaj- IranAssistant professor, Department of forest science, Shahrekrod University, Shahrekord, IranThe goal of this study was to determine the modulus of elasticity and modulus of rapture of two kinds of date palm (Khasi and Hajmohammadi) using static bending and dynamic (flexural vibration) techniques. To reduce the difference between static and dynamic stiffness values, the static bending modulus of elasticity was modified by taking into account the value of the shear deflection. In addition to, for better understanding of the mechanical properties of date palm, values were compared with those measured for poplar samples. The results showed that, in Khasi the mean values of the modulus of elasticity obtained by flexural vibration, the static modulus of elasticity, the modified static modulus of elasticity and as well as the modulus of rapture were 47, 67,68 and 38% less than those measured for Hajmohammadi respectively. In comparing with date palm, values measured for poplar samples were more pronounced. The difference between dynamic and static values of modulus recorded for Khasi, Hajmohammadi and poplar samples were 63, 40 and 19% respectively. After modification of the static values, the difference was reduced in to 3% for Khasi, 6% for Hajmohammadi and 7 % for poplar experimental samples. Finally the significant correlation coefficients were found between the static and the dynamic modulus of elasticity for both two kinds of date palm.http://ijwpr.areeo.ac.ir/article_115164_95b60b2d32f0443b277e6848916b3e78.pdfDate palmPOPLARmodified modulus of elasticitymodulus of rapture |
| spellingShingle | Mohamad ali Sadatnia noshin sattari mehran roohnia mohsen bahmani Comparison of stiffness parameters of two kinds of date palm using nondestructive test تحقیقات علوم چوب و کاغذ ایران Date palm POPLAR modified modulus of elasticity modulus of rapture |
| title | Comparison of stiffness parameters of two kinds of date palm using nondestructive test |
| title_full | Comparison of stiffness parameters of two kinds of date palm using nondestructive test |
| title_fullStr | Comparison of stiffness parameters of two kinds of date palm using nondestructive test |
| title_full_unstemmed | Comparison of stiffness parameters of two kinds of date palm using nondestructive test |
| title_short | Comparison of stiffness parameters of two kinds of date palm using nondestructive test |
| title_sort | comparison of stiffness parameters of two kinds of date palm using nondestructive test |
| topic | Date palm POPLAR modified modulus of elasticity modulus of rapture |
| url | http://ijwpr.areeo.ac.ir/article_115164_95b60b2d32f0443b277e6848916b3e78.pdf |
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