Dessalegn Yalew, Singh Balkeshwar, van Vuure Aart W, Rajhi Ali A, Ahmed Gulam Mohammed Sayeed, Hossain Nazia
Program of Mechanical Design and Manufacturing Engineering, Department of Mechanical Engineering, Adama Science and Technology University, Adama 1888, Ethiopia.
Composite Materials Group, Department Materials Engineering, Campus Group T, KU Leuven, Andreas Vesaliusstraat 13, 3000 Leuven, Belgium.
Materials (Basel). 2022 Jun 10;15(12):4144. doi: 10.3390/ma15124144.
The purpose of this study was to measure the strength of various bamboo fibres and their epoxy composites based on the bamboo ages and harvesting seasons. Three representative samples of 1-3-year-old bamboo plants were collected in November and February. Bamboo fibres and their epoxy composites had the highest tensile strength and Young's modulus at 2 years old and in November. The back-calculated tensile strengths using the "rule of mixture" of Injibara, Kombolcha, and Mekaneselam bamboo-fibre-reinforced epoxy composites were 548 ± 40-422 ± 33 MPa, 496 ± 16-339 ± 30 MPa, and 541 ± 21-399 ± 55 MPa, whereas the back-calculated Young's moduli using the "rule of mixture" were 48 ± 5-37 ± 3 GPa, 36 ± 4-25 ± 3 GPa, and 44 ± 2-40 ± 2 GPa, respectively. The tensile strengths of the Injibara, Kombolcha, and Mekaneselam bamboo-fibre-reinforced epoxy composites were 227 ± 14-171 ± 22 MPa, 255 ± 18-129 ± 15 MPa, and 206 ± 19-151 ± 11 MPa, whereas Young's moduli were 21 ± 2.9-16 ± 4.24 GPa, 18 ± 0.8-11 ± 0.51 GPa, and 18 ± 0.85-16 ± 0.82 GPa respectively. The highest to the lowest tensile strengths and Young's moduli of bamboo fibres and their epoxy composites were Injibara, Mekaneselam, and Kombolcha, which were the local regional area names from these fibres were extracted. The intended functional application of the current research study is the automobile industries of headliners, which substitute the conventional materials of glass fibres.
本研究的目的是基于竹龄和收获季节来测量各种竹纤维及其环氧复合材料的强度。在11月和2月收集了1至3年生竹子植株的三个代表性样本。竹纤维及其环氧复合材料在2年生且于11月收获时具有最高的拉伸强度和杨氏模量。使用因吉巴拉、孔博尔查和梅卡内塞拉姆竹纤维增强环氧复合材料的“混合法则”反算得到的拉伸强度分别为548±40 - 422±33兆帕、496±16 - 339±30兆帕和541±21 - 399±55兆帕，而使用“混合法则”反算得到的杨氏模量分别为48±5 - 37±3吉帕、36±4 - 25±3吉帕和44±2 - 40±2吉帕。因吉巴拉、孔博尔查和梅卡内塞拉姆竹纤维增强环氧复合材料的拉伸强度分别为227±14 - 171±22兆帕、255±18 - 129±15兆帕和206±19 - 151±11兆帕，而杨氏模量分别为21±2.9 - 16±4.24吉帕、18±0.8 - 11±0.51吉帕和18±0.85 - 16±0.82吉帕。竹纤维及其环氧复合材料的拉伸强度和杨氏模量从高到低依次为因吉巴拉、梅卡内塞拉姆和孔博尔查，这些是提取这些纤维的当地地区名称。当前研究的预期功能应用是汽车工业中的车顶内衬，用以替代传统的玻璃纤维材料。
