| 黏弹材料动态纳米压入过程的尺度效应 |
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| 引用本文： | 周沙溆;胡宏玖;李洁.黏弹材料动态纳米压入过程的尺度效应[J].中国塑料,2011,25(3):52-56. |
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| 作者姓名： | 周沙溆;胡宏玖;李洁 |
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| 作者单位： | 吉首大学城乡资源规划学院 |
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| 基金项目： | 吉首大学自然科学基金资助项目(09JD044) |
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| 摘 要： | 提出柔度因子分析法表征压入尺寸效应（ISE)通讨聚甲基丙烯酸甲酯(PMMA)及热塑性聚氨酯(TPU)的动态纳米压痕试验，探讨黏弹材料动态压入过程中的压入尺度效应及其影响因素。结果表明，Berkovich针尖对黏弹材料进行纳米压痕动态测试时，主载荷是压入尺度效应产生与否的决定因素，频率对此影响较小，谐振载荷控制方式影响甚微;测试材料存在一临界值，当压入深度大于其临界值时，动态纳米压痕测试获得的黏弹材料参数与传统的动态力学分析(DMA)试验结果基本一致。
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| 关 键 词： | 纳米压痕 粘弹 动态 尺度效应 |
| 收稿时间： | 2010-11-26 |
Indentation Size Effect of Viscoelastic Polymers by Dynamic Nanoindentation |
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| ZHOU Shaxu,HU Hongjiu,LI Jie.Indentation Size Effect of Viscoelastic Polymers by Dynamic Nanoindentation[J].China Plastics,2011,25(3):52-56. |
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| Authors: | ZHOU Shaxu HU Hongjiu LI Jie |
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| Affiliation: | ZHOU Shaxu1,HU Hongjiu2,LI Jie3(1.College of Resources and Planning Sciences,Jishou University,Zhangjiajie 427000,China,2.Shanghai Institute of Applied Mathematics and Mechanics,Shanghai University,Shanghai 200072,3.Instrumental Analysis & Research Center,Shanghai 200444,China) |
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| Abstract: | Flexibility factor analysis was proposed for exploring the indentation size effect(ISE) of viscoelastic polymers,and the influencing factors of ISE were analyzed by dynamic nanoindentation for PMMA and thermoplastic polyurethane(TPU).It was found that the carrier load was the key factor of ISE of linear viscoelastic materials in dynamic nanoindentation using Berkovich tip,and the harmonic load control methods have little influence on ISE.The viscoelastic performances by dynamic nanoindentation agree with th... |
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| Keywords: | viscoelastic material nanoindentation indentation size effect dynamic indentation process |
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