Effect of off-axis angle on tension failures of laminated moso bamboo-poplar veneer composites: An in situ characterization
Inspired by the natural gradient structure of the moso bamboo wall, a hybrid moso bamboo（B)Wood(W) veneer Composite (BWC) was developed with a specific structure of [B0°/ W90°/ B0°]. The dynamic fracture behaviors and damage mechanism of the BWC were characterized using in situ scanning electron mic...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-12-01
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| Series: | Materials & Design |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127521008091 |
| _version_ | 1818369569699397632 |
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| author | Shanyu Han Fuming Chen Haidong Li Ge Wang |
| author_facet | Shanyu Han Fuming Chen Haidong Li Ge Wang |
| author_sort | Shanyu Han |
| collection | DOAJ |
| description | Inspired by the natural gradient structure of the moso bamboo wall, a hybrid moso bamboo（B)Wood(W) veneer Composite (BWC) was developed with a specific structure of [B0°/ W90°/ B0°]. The dynamic fracture behaviors and damage mechanism of the BWC were characterized using in situ scanning electron microscopy. X-ray micro- computed tomography imaging was employed to verify the off-axis tensile mechanical properties. The results showed that the maximum tensile strength and modulus of the BWC under off-axis loadings were 232.25 MPa and 17.47 GPa, respectively. Meanwhile, the maximum specific strength and specific modulus of the BWC were 290.31 MPa·cm3·g−1 and 23.84 GPa·cm3·g−1, respectively, which are higher than both natural wood (95.26 MPa·cm3·g−1, 10.82 GPa·cm3·g−1), bamboo (208.56 MPa·cm3·g−1, 15.74 GPa·cm3·g−1) and even steel alloy (237.86 MPa·cm3·g−1, 21.98 GPa·cm3·g−1). Compared to reorganized bamboo (RB), the porosity of the BWC was 61.1% lower. The BWC was strengthened via internal toughening mechanisms (i.e. fiber bridging) and external toughening mechanisms (i.e. multiregional distribution of micro-cracks). This work highlights methods to design high-performance bio composite from commonly used biomaterials through synergistic strengthening and toughening mechanisms, which has significant advantages in the ever-growing construction industry. |
| first_indexed | 2024-12-13T23:25:56Z |
| format | Article |
| id | doaj.art-3603f1f1ae284693b035f475e1d4d76c |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-12-13T23:25:56Z |
| publishDate | 2021-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-3603f1f1ae284693b035f475e1d4d76c2022-12-21T23:27:33ZengElsevierMaterials & Design0264-12752021-12-01212110254Effect of off-axis angle on tension failures of laminated moso bamboo-poplar veneer composites: An in situ characterizationShanyu Han0Fuming Chen1Haidong Li2Ge Wang3Department of Biomaterials, International Centre for Bamboo and Rattan, Beijing 100102, China; SFA and Beijing Co-built Key Laboratory of Bamboo and Rattan Science and Technology, State Forestry Administration, Beijing 100102, ChinaDepartment of Biomaterials, International Centre for Bamboo and Rattan, Beijing 100102, China; SFA and Beijing Co-built Key Laboratory of Bamboo and Rattan Science and Technology, State Forestry Administration, Beijing 100102, China; Corresponding authors at: Department of Biomaterials, International Centre for Bamboo and Rattan, No. 8, Futong East Street, Chaoyang District, Beijing 100102, China.Henan Polytechnic University, Jiaozuo, Henan Province, 454003, ChinaDepartment of Biomaterials, International Centre for Bamboo and Rattan, Beijing 100102, China; SFA and Beijing Co-built Key Laboratory of Bamboo and Rattan Science and Technology, State Forestry Administration, Beijing 100102, China; Corresponding authors at: Department of Biomaterials, International Centre for Bamboo and Rattan, No. 8, Futong East Street, Chaoyang District, Beijing 100102, China.Inspired by the natural gradient structure of the moso bamboo wall, a hybrid moso bamboo（B)Wood(W) veneer Composite (BWC) was developed with a specific structure of [B0°/ W90°/ B0°]. The dynamic fracture behaviors and damage mechanism of the BWC were characterized using in situ scanning electron microscopy. X-ray micro- computed tomography imaging was employed to verify the off-axis tensile mechanical properties. The results showed that the maximum tensile strength and modulus of the BWC under off-axis loadings were 232.25 MPa and 17.47 GPa, respectively. Meanwhile, the maximum specific strength and specific modulus of the BWC were 290.31 MPa·cm3·g−1 and 23.84 GPa·cm3·g−1, respectively, which are higher than both natural wood (95.26 MPa·cm3·g−1, 10.82 GPa·cm3·g−1), bamboo (208.56 MPa·cm3·g−1, 15.74 GPa·cm3·g−1) and even steel alloy (237.86 MPa·cm3·g−1, 21.98 GPa·cm3·g−1). Compared to reorganized bamboo (RB), the porosity of the BWC was 61.1% lower. The BWC was strengthened via internal toughening mechanisms (i.e. fiber bridging) and external toughening mechanisms (i.e. multiregional distribution of micro-cracks). This work highlights methods to design high-performance bio composite from commonly used biomaterials through synergistic strengthening and toughening mechanisms, which has significant advantages in the ever-growing construction industry.http://www.sciencedirect.com/science/article/pii/S0264127521008091BambooBiomaterialsStructural designIn situ stretchingStrengthening and toughening mechanism |
| spellingShingle | Shanyu Han Fuming Chen Haidong Li Ge Wang Effect of off-axis angle on tension failures of laminated moso bamboo-poplar veneer composites: An in situ characterization Materials & Design Bamboo Biomaterials Structural design In situ stretching Strengthening and toughening mechanism |
| title | Effect of off-axis angle on tension failures of laminated moso bamboo-poplar veneer composites: An in situ characterization |
| title_full | Effect of off-axis angle on tension failures of laminated moso bamboo-poplar veneer composites: An in situ characterization |
| title_fullStr | Effect of off-axis angle on tension failures of laminated moso bamboo-poplar veneer composites: An in situ characterization |
| title_full_unstemmed | Effect of off-axis angle on tension failures of laminated moso bamboo-poplar veneer composites: An in situ characterization |
| title_short | Effect of off-axis angle on tension failures of laminated moso bamboo-poplar veneer composites: An in situ characterization |
| title_sort | effect of off axis angle on tension failures of laminated moso bamboo poplar veneer composites an in situ characterization |
| topic | Bamboo Biomaterials Structural design In situ stretching Strengthening and toughening mechanism |
| url | http://www.sciencedirect.com/science/article/pii/S0264127521008091 |
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