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 |
(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 |
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Experimental System for Measuring the Mechanical Properties of Polymer Under High Strain Rate |
Xinwu Zeng1, G.M.Swallowe2, S.Hamdan3 |
(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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