中国物理B ›› 2013, Vol. 22 ›› Issue (10): 108301-108301.doi: 10.1088/1674-1056/22/10/108301

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

A fiber-array probe technique for measuring the viscosity of a substance under shock compression

冯立鹏, 刘福生, 马小娟, 赵北京, 张宁超, 王文鹏, 郝斌斌   

  1. Laboratory of High Temperature and High Pressure Physics, Southwest Jiaotong University, Chengdu 610031, China
  • 收稿日期:2013-01-13 修回日期:2013-03-22 出版日期:2013-08-30 发布日期:2013-08-30
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 10974160 and 11002120) and the Fundamental Research Funds for the Central Universities (Grant No. SWJTU12CX085).

A fiber-array probe technique for measuring the viscosity of a substance under shock compression

Feng Li-Peng (冯立鹏), Liu Fu-Sheng (刘福生), Ma Xiao-Juan (马小娟), Zhao Bei-Jing (赵北京), Zhang Ning-Chao (张宁超), Wang Wen-Peng (王文鹏), Hao Bin-Bin (郝斌斌)   

  1. Laboratory of High Temperature and High Pressure Physics, Southwest Jiaotong University, Chengdu 610031, China
  • Received:2013-01-13 Revised:2013-03-22 Online:2013-08-30 Published:2013-08-30
  • Contact: Liu Fu-Sheng E-mail:fusheng_l@sohu.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 10974160 and 11002120) and the Fundamental Research Funds for the Central Universities (Grant No. SWJTU12CX085).

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摘要： A fiber-array probe is designed to measure the damping behavior of a small perturbed shock wave in an opaque substance, by which the effective viscosity of substance under the condition of high temperature and high pressure can be constrained according to the flyer-impact technique. It shows that the measurement precision of the shock arrival time by using this technique is within 2 ns. To easily compare with the results given by electrical pin technique, the newly developed method is used to investigate the effective viscosity of aluminum (Al). The shear viscosity coefficient of Al is determined to be 1700 Pa·s at 71 GPa with a strain rate of 3.6×106 s-1, which is in good agreement with the results of other methods. The advantage of the new technique over the electrical pin one is that it is applicable for studying the non-conductive substances.

关键词: shock wave, viscosity coefficient, fiber array, high temperatures and high pressures

Abstract: A fiber-array probe is designed to measure the damping behavior of a small perturbed shock wave in an opaque substance, by which the effective viscosity of substance under the condition of high temperature and high pressure can be constrained according to the flyer-impact technique. It shows that the measurement precision of the shock arrival time by using this technique is within 2 ns. To easily compare with the results given by electrical pin technique, the newly developed method is used to investigate the effective viscosity of aluminum (Al). The shear viscosity coefficient of Al is determined to be 1700 Pa·s at 71 GPa with a strain rate of 3.6×106 s-1, which is in good agreement with the results of other methods. The advantage of the new technique over the electrical pin one is that it is applicable for studying the non-conductive substances.

Key words: shock wave, viscosity coefficient, fiber array, high temperatures and high pressures

中图分类号:  (Viscosity measurements)

  • 83.85.Jn
62.50.-p (High-pressure effects in solids and liquids) 66.20.-d (Viscosity of liquids; diffusive momentum transport) 42.15.-i (Geometrical optics)