| 引用本文: | 曾新吾,G.M.Swallowe,S.Hamdan.测量聚合物在高应变率下力学性质的实验系统.[J].国防科技大学学报,1997,19(5):87-91.[点击复制] |
| Xinwu Zeng,G.M.Swallowe,S.Hamdan.Experimental System for Measuring the Mechanical Properties of Polymer Under High Strain Rate[J].Journal of National University of Defense Technology,1997,19(5):87-91[点击复制] |
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| 测量聚合物在高应变率下力学性质的实验系统 |
| 曾新吾1, G.M.Swallowe2, S.Hamdan3 |
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(1.国防科技大学 应用物理系 湖南 长沙 410073;2.Dept.of Phys.，Loughborough Univ.of Tech.，Loughborough LE11 3TU，UK;3.Dept.of Phys.，Univ. Pertanian Malaysia，Serdang 43400，Malaysia)
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| 摘要: |
| 本文介绍了一种用于测量材料在高应变率下单轴应力-应变性能的实验测量系统：落重与高速摄影实验系统.该系统在现有的落重装置的基础上，增加了高速摄影和应力过程的同时测量，使得在一次实验中可同时取到应力应变数据。从而避免了这类实验中常用的变形过程中体积不变的假设。通过高速实验提供的实验照片，我们还可以观察到聚合物在高应变率下从变形到断裂的发展过程。 |
| 关键词: 力学性质，高应变率，聚合物 |
| DOI： |
| 投稿日期：1997-05-30 |
| 基金项目: |
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| Experimental System for Measuring the Mechanical Properties of Polymer Under High Strain Rate |
| Xinwu Zeng1, G.M.Swallowe2, S.Hamdan3 |
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(1.l.Dept.of Appl.Phys.，Changsha Institute of Tech.，Changsha，410073;2.Dept.of Phys.，Loughborough Univ.of Tech.，Loughborough LE11 3TU，UK;3.Dept.of Phys.，Univ. Pertanian Malaysia，Serdang 43400，Malaysia)
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| Abstract: |
| This Paper describes a technique developed to measure the uniaxial compressive stress-strain properties of polymers at the strain rate appropriate to ballistic and impact events over time scales of tens of microseconds using a Dropweight-Camera system. The instrument constructed represents a novel development of existing equipment types. The results obtained from compression testing give stress and strain measurements at strain rates of up to 103s-1 and over a temperature range of 20一200℃. The stress and strain can be independently obtained simultaneously. This dropweight-camera system has the capability of providing direct visualisation simultaneously with stress information of the processes occurring during the deformation and fracture of materials. |
| Keywords: mechanical properties,high strain rate,polymer |
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