Shock properties of Nd2Fe14B material and design for shock-driven pulsed power source |

Issue		Volume 2, 2009 DYMAT 2009 - 9th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading


Page(s)		1189 - 1194
Section		Micro-Structural Effects
DOI		10.1051/dymat/2009167
Published online		15 September 2009

DYMAT 2009 (2009) 1189-1194
DOI: 10.1051/dymat/2009167

Shock properties of Nd₂Fe₁₄B material and design for shock-driven pulsed power source

M. Chuan-Min¹, S. Shang-Chun¹, L. Qiao-yan², H. Hong-Liang¹, Z. Wen-Jun¹ and Z. Feng¹

¹ National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics(CAEP), 621900 Mianyang, China
² Institute of High temperature and High Pressure Physics, Sichuan University Chengdu, 610065 Sichuan Province, China

Published online: 15 September 2009

Abstract
Shock properties of Nd₂Fe₁₄B magnet were measured in the shock pressure range of 19 ~ 78 GPa by employing the two-stage light gas gun. Hugoniot data of Nd₂Fe₁₄B with initial average density 7.35 g/cm³ are obtained by the impedance matching method. The experimental results show a linear relationship between shock velocity and mass velocity. Based on the technique of explosive-driven demagnetization, a pulsed power source has been designed. With the Φ40 mm × 20 mm × 10 mm cylindrical magnet, the maximum output voltage and current reaches respectively 125.5 volts and 862.9 A. The rise time of the front edge of output voltage is about 264 ns. On the 0.05 Ω simulative load, the net power is 37 kW. Several formulas have been deduced in order to predict some important properties of the power source.

What is OpenURL?

The OpenURL standard is a protocol for transmission of metadata describing the resource that you wish to access. An OpenURL link contains article metadata and directs it to the OpenURL server of your choice. The OpenURL server can provide access to the resource and also offer complementary services (specific search engine, export of references...). The OpenURL link can be generated by different means.

If your librarian has set up your subscription with an OpenURL resolver, OpenURL links appear automatically on the abstract pages.
You can define your own OpenURL resolver with your EDPS Account. In this case your choice will be given priority over that of your library.
You can use an add-on for your browser (Firefox or I.E.) to display OpenURL links on a page (see http://www.openly.com/openurlref/). You should disable this module if you wish to use the OpenURL server that you or your library have defined.