DROPWEIGHT-CAMERA SYSTEM FOR HIGH STRAIN RATE MECHANICAL TESTING

机译：用于高应变率机械测试的压重相机系统

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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 10 s and over a temperature range of 20-200℃. The stress can be calculated directly from a measured force obtained from a calibrated accelerometer. The strain can be obtained simultaneously from the sample displacement measured directly from a high speed camera photoed film. 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.

机译：本文介绍了一种使用Dropweight-Camera系统在数十微秒的时间范围内以适合于弹道和冲击事件的应变率测量聚合物的单轴压缩应力-应变特性的技术。所构造的仪器代表了现有设备类型的新颖发展。通过压缩测试获得的结果可在高达10 s的应变速率下以及20-200℃的温度范围内进行应力和应变测量。可以直接从校准的加速度计获得的测得的力来计算应力。可以从直接从高速相机照相胶片上直接测量的样品位移中同时获得应变。这种轻型相机系统具有提供直接可视化的功能，同时提供了在材料变形和断裂过程中发生的过程的应力信息。

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来源
《Proceedings of the 2nd international symposium on impact engineering》|1996年|374-379|共6页
会议地点 Beijing(CN);Beijing(CN)
作者
X.Zeng; S. Hamdan; G. M. Swallowe;
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作者单位

Dept. Of Appl. Physics, Changsha Institute of Tech., Changsha, Hunan 410073, China;

Dept of Physics, University Pertanian Malaysia, Serdang 43400, Selangor, Malaysia;

Dept. of Physics, Loughborough University of Tech., Leicestershire LE11 3TU, UK;

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原文格式 PDF
正文语种 eng
中图分类机械动力学;挤压;
关键词
drop-weight; high speed camera; high strain rate; polymer;

机译：下降重量高速相机；高应变率聚合物;

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DROPWEIGHT-CAMERA SYSTEM FOR HIGH STRAIN RATE MECHANICAL TESTING

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