Results 221 to 230 of about 511,312 (269)

Strain-rate sensitivity of glasses

2017
Although glasses are commonly thought of as ideal brittle materials, a local plastic deformation can be induced by the penetration of sharp objects, such as the indenter tips commonly employed for hardness testing. Since the first experimental verification of this phenomenon, considerable research effort has been devoted to the underlying microscopic ...
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The strain-rate sensitivity of α-uranium

Journal of the Mechanics and Physics of Solids, 1959
Abstract Experiments are described in which specimens from two different batches of uranium were subjected to both static and dynamic compression tests. From such tests static and dynamic stress-strain curves were obtained. These stress-strain curves indicate that α-uranium is slightly strain-rate sensitive; for instance, the effect of increasing ...
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Strain rate sensitivity of a high strain rate superplastic TiNp/2014 Al composite

Journal of Materials Processing Technology, 2010
Abstract The effects of deformation temperature and strain in hot rolling deformation on strain rate sensitivity of the TiN p /2014 Al composite were studied by tensile tests conducted out at 773, 798, 818 and 838 K with the strain rates from 1.7 ×10 −3 to 1.7 × 10 0  s −1 .
H.E. Hu, L. Zhen, T. Imai
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The extrusion force and the mean strain rate during the extrusion of strain rate sensitive materials

Metallurgical Transactions, 1970
The force required to extrude a strain rate sensitive material under conditions of homogeneous deformation is calculated by the uniform work method. The force is shown to be a strong function of the rate sensitivity of the material. A new definition of the mean strain rate during extrusion is proposed, which is particularly appropriate to rate ...
T. Chandra, J. J. Jonas
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Strain-rate sensitivity of zinc sheet

Metallurgical Transactions A, 1984
The flow stress of many commercial alloys depends on applied strain rate, and this dependence contributes to their resistance to strain localization (necking). Measurement of strain-rate sensitivity for these alloys is complicated by possible dependence on strain, strain rate, testing method, and method of analysis.
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Material Strain Rate Sensitivity

2001
The theoretical analyses developed in chapter 1 have examined the influence of inertia on the response of an elementary structure subjected to dynamic loads which cause plastic behaviour. The yield criterion, which governs the plastic flow, was assumed to be independent of the rate of strain (\(\dot \varepsilon \)).
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Strain-Rate-Sensitive Constitutive Law for Concrete

Journal of Engineering Mechanics, 1999
Concrete strength is highly sensitive to loading procedure, especially in the range of high strain rates. On the basis of experimental results, it is demonstrated that the full loading history must be included in a dynamic constitutive model, not just consideration of the current strain rate.
Eibl, Josef, Schmidt-Hurtienne, Björn
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The strain rate sensitivity values in superplastic deformation

Materials Science and Engineering, 1985
Abstract Fine-grained superplastic α-β Ti-6Al-4V alloy (where the alloy composition is given in approximate weight per cent) was deformed in the temperature range 750–925°C and at strain rates of 10−5 −2 × 10−3 s−1. The results indicate that an increase in the deformation temperature or a decrease in the deformation rate is followed by an increase in
Giora Gurewitz, Amiya K. Mukherjee
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Strain-rate sensitivity of ultrafine-grained materials

Zeitschrift für Metallkunde, 2005
Abstract The strain-rate sensitivity of commercial purity Aluminium (Al 99.5) and of α-iron, with both conventional (CG) and ultrafine (UFG) grain sizes, are investigated by compression and tension tests at different temperatures. Microstructural investigations were performed before and after compression testing in order to investigate the ...
Höppel, H., May, J., Eisenlohr, P., Göken, M.   +3 more
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The Effect of a Lathyritic Diet on the Sensitivity of Tendon to Strain Rate

Journal of Biomechanical Engineering, 1985
While the tensile failure properties of rat-tail tendon depend on strain rate, the sensitivity to strain rate decreases with age, especially during sexual maturation. The object of this study was to determine the effect of an experimental model of chronic lathyrism on age-dependent changes in the sensitivity of developing tendon strength to strain rate.
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