Results 161 to 170 of about 2,546,782 (204)

Large Strain, High Strain Rate Testing of Copper

Journal of Engineering Materials and Technology, 1980
This paper describes the development of a high-speed torsional testing machine and results obtained on the strain-rate dependent strength of copper at large shear strains. Test techniques and data obtained are intended to be useful in applications such as ballistics and machining.
U. S. Lindholm, A. Nagy, G. R. Johnson, J. M. Hoegfeldt   +3 more
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High-Strain-Rate Loading

2014
The disk-shaped composite specimens with different compositions of MWCNTs were then subjected to high-strain-rate impact, and their dynamic impact loading behavior results were compared with variations in compositions of MWCNTs.
openaire   +1 more source

High Strain-Rate Compression Tests on Ice

The Journal of Physical Chemistry B, 1997
High-speed uniaxial compression tests were conducted in the strain-rate range 10-1−101 s-1, at −11 °C, on freshwater ice and “Baltic” sea ice of mean salinity 2.4 ± 0.7 ppt.
openaire   +2 more sources

High Strain Rate Tensile Testing

2004
Abstract High strain rate tensile testing is used to understand the response of materials to dynamic loading. The behavior of materials under high strain rate tensile loads may differ considerably from that observed in conventional tensile tests.
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Strain Rate Sensitivity of Flow Stress at Very High Rates of Strain

1996
In order to clarify the mechanism of the steep rise in the flow stress, widely seen in metallic materials at strain rates above about 5×103/sec, two strain rate change tests were conducted. The strain rate reduction test was made for polycrystalline aluminium, copper, iron and niobium at strain rates up to about 2×104/sec.
J. Shioiri, K. Sakino, S. Santoh
openaire   +1 more source

Dislocation Mechanics at High Strain Rates

1973
In this paper a high strain rate is defined as high if the dislocations that produce the plastic strain must move at velocities of the order of, or larger than the shear wave velocity a2. Except possibly in the initial portions of stress strain curves dislocation velocities are much smaller than a2.
J. Weertman, T. Vreeland, K. M. Jassby
openaire   +1 more source

High Strain Rate Behavior of Metals

Applied Mechanics Reviews, 1990
Experimental results on the high strain rate response of polycrystalline metals are reviewed, with emphasis on the behavior of pure metals. A strong increase in flow stress with increasing strain rate is reported for strain rates of approximately 105s−1 and higher.
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Strain Rate History Effects and Dislocation Substructure at High Strain Rates

1983
A brief review is presented of strain rate history and temperature history effects during the high strain rate deformation of metals with special emphasis on the BCC metals. Possible explanations to account for history effects are reviewed. Experiments are described in which single crystals of aluminum are deformed at various strain rates. Observations
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Plastic deformation at high strain rates

Czechoslovak Journal of Physics, 1970
In the present paper a new method, an original testing device and techniques for the study of plastic deformation in materials at high strain rates up to 2×104 s−1 achieved with the use of very short stress pulses (length within 10–20 μs) are described.
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High strain rate and specialised testing

2017
Armour materials and armoured structures are required to perform under a variety of dynamic conditions, from local penetration events to global blast loadings. Understanding how these structures behave is therefore an important aspect for military engineers to consider.
Ruan, Dong, Kariem, M. A., Crouch, I. G.
openaire   +2 more sources