| 单壁碳纳米管力学行为的数字散斑相关法实验研究 |
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| 引用本文： | 谢惠民,刘战伟,朱宏伟,方岱宁,戴福隆,尚海霞. 单壁碳纳米管力学行为的数字散斑相关法实验研究[J]. 光学技术, 2004, 30(4): 449-451 |
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| 作者姓名： | 谢惠民 刘战伟 朱宏伟 方岱宁 戴福隆 尚海霞 |
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| 作者单位： | 清华大学,工程力学系,北京,100084;清华大学,机械工程系,北京,100084 |
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| 基金项目： | 国家自然科学基金资助项目(10232030) |
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| 摘 要： | 通过直接单向拉伸超长单壁碳纳米管束长绳,首次借助高精度数字散斑相关法,并结合显维放大技术,测量了单壁碳纳米管的弹性模量和拉伸强度。试验中观察了单壁碳纳米管束长绳的断裂过程。单壁碳纳米管束长绳通过改进的化学气相沉积技术生成。试验得到单壁碳纳米管的平均杨氏模量为129.0±70.3GPa,平均拉伸强度为1.95±0.56GPa,低于计算值和先前其它文献的试验值。
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| 关 键 词： | 单壁碳纳米管 数字散斑相关 弹性模量 拉伸强度 |
| 文章编号： | 1002-1582(2004)04-0449-03 |
| 修稿时间： | 2003-11-13 |
Study on mechanical behavior of single-wall carbon nanotubes by using digital speckle correlation method(DSCM) |
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| XIE Hui-min,LIU Zhan-wei,ZHU Hong-wei,FANG Dai-ning,DAI Fu-long,SHANG Hai-xia. Study on mechanical behavior of single-wall carbon nanotubes by using digital speckle correlation method(DSCM)[J]. Optical Technique, 2004, 30(4): 449-451 |
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| Authors: | XIE Hui-min LIU Zhan-wei ZHU Hong-wei FANG Dai-ning DAI Fu-long SHANG Hai-xia |
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| Affiliation: | XIE Hui-min~1,LIU Zhan-wei~1,ZHU Hong-wei~2,FANG Dai-ning~1,DAI Fu-long~1,SHANG Hai-xia~1 |
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| Abstract: | A combination of optical microscopy and DSCM is used to measure the young's modulus and tensile strength of single-wall carbon nanotubes by directly pulling long strands of single-wall carbon nanotubes bundles. The fracture process of the long strands of single-wall carbon nanotubes bundles is observed. The nanotubes bundles are synthesized by the catalytic pyrolysis of n-hexane with an enhanced vertical floating technique. The average young's modulus and tensile strength obtained are 129.0±70.3GPa and 1.95±0.56GPa, respectively, which are lower than those calculated and measured previously. The factors that affect the mechanical strengths of nanotubes are discussed. |
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| Keywords: | single-wall carbon nanotubes DSCM young's modulus tensile strength |
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