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Proceedings 2018, 2(8), 403; https://doi.org/10.3390/ICEM18-05240

Experimental Study on Spallation of Titanium Alloy Plates under Intense Impulse Loading

1
National Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing 210094, China
2
China Ship Development and Design Center, Wuhan 430064, China
3
Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900, China
Presented at the 18th International Conference on Experimental Mechanics, Brussels, Belgium, 1–5 July 2018.
*
Author to whom correspondence should be addressed.
Published: 20 May 2018
PDF [659 KB, uploaded 8 June 2018]

Abstract

The dynamic response and spall characteristics of a double-layer TC4 titanium alloy thin target under intense impulse loading was investigated experimentally using electric gun technique. A velocity-measuring instrument, known as VISAR (velocity interferometer system for any reflector), measured the free surface velocity of targets. Typical characteristic parameters of the velocity were calculated by the obtained data. The deformation/failure modes of the samples were analyzed, and based on stress wave propagation theory, the spall thickness was derived. Furthermore, it was found that the oscillation period of the free surface velocity can be used to estimate the location of spalling damage, but cannot directly reflect the full spallation of the target.
Keywords: electric gun; titanium alloy; double-layer target; free surface velocity; spall fracture electric gun; titanium alloy; double-layer target; free surface velocity; spall fracture
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Zhao, Y.; Li, R.; Mo, J.; Tan, F.; Sun, Y. Experimental Study on Spallation of Titanium Alloy Plates under Intense Impulse Loading. Proceedings 2018, 2, 403.

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