| 摘要: |
| 利用落锤冲击系统研究了玄武岩纤维束在不同应变速率和不同温度下的拉伸力学性能.结果表明：玄武岩纤维束的力学性能与应变速率和温度具有相关性.在相同的温度下，玄武岩纤维束的弹性模量和拉伸强度都随着应变速率的增加而增大，其最大应变与韧性呈先增后减的趋势；在相同的应变速率下，随着温度的增加，其弹性模量减小，最大应变和韧性增大，拉伸强度呈先减后增的趋势. |
| 关键词: 玄武岩纤维 应变速率 温度 拉伸性能 |
| DOI：103969/j.issn1007 9629201604023 |
| 分类号: |
| 基金项目:湖南省科技计划重点项目（2014WK2026）; 国家重点基础研究发展计划（973计划）项目（2012CB026200） |
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| Effects of Strain Rate and Temperature on Mechanical Properties of Basalt Fiber Bundle |
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ZHU Deju, OU Yunfu
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College of Civil Engineering, Hunan University, Changsha 410082, China
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| Abstract: |
| Basalt fiber bundle specimens were tested at different strain rates and temperatures utilizing a drop tower impact system. Results show that mechanical properties of basalt fiber bundle are sensitive to strain rate and temperature. When the temperature is constant, elastic modulus and tensile strength increase with increasing strain rate, but maximum strain and toughness at first increase and then decreases with increasing strain rate. When the strain rate is constant and temperature is increasing, elastic modulus decreases, maximum strain and toughness show the opposite trend，tensile strength at first decreases and then increases. |
| Key words: basalt fiber strain rate temperature tensile property |
