Methodological aspects of studying dynamic material properties using the Kolsky method

Bragov, A. M.; Lomunov, A. K.

doi:10.1016/0734-743x(95)93939-g

Cited by 134 publications

(59 citation statements)

References 5 publications

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“…The tests were performed in compression by the traditional way [6], at splitting -by using Brazilian test [7]. In conventional tests at compression of cylindrical sample a compressive load is applied along the longitudinal axis of the sample.…”

Section: Test Methodsmentioning

confidence: 99%

Investigation of strength properties of freshwater ice

Bragov

Игумнов

Konstantinov

et al. 2015

EPJ Web of Conferences

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Abstract.A study of the strength and deformation properties of freshwater ice under compression, tension and shear in a wide range of strain rates (10 −4 − 3 · 10 3 s −1 ) and temperatures of −5 • C, −20 • C, −40 • C and −60 • C was performed. Static stressstrain curves of ice under compression were obtained on which the identified strength properties of ice as well as compressive modulus. To determine the mechanical properties of ice at high-speed loading the Kolsky method was used with various embodiments of split Hopkinson bar. The deformation curves were obtained at various loading conditions. Thereon breaking points were defined as well as their dependence on the strain rate and temperature. Also static and dynamic strength properties of ice at splitting and circular shear were defined. Increase in the dynamic strength properties upon the static ones for all loading conditions was marked.

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Section: Test Methodsmentioning

confidence: 99%

Investigation of strength properties of freshwater ice

Bragov

Игумнов

Konstantinov

et al. 2015

EPJ Web of Conferences

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“…[4][5][6][7][8] In general, the results show that, to a greater or lesser extent, most non-metallic and composite materials exhibit a significant change in mechanical properties when deformed under different strain rates and temperatures. Several mechanisms have been proposed to account for the change in mechanical properties prompted by high velocity deformation, including dislocation damping, 9) thermally-activated mechanisms, 10) and so on.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Impact Response of Inconel 718 Alloy under Low and High Temperatures

Lee

Lin

Chen³

et al. 2011

Mater. Trans.

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Dynamic impact response of Inconel 718 alloy is studied at temperatures ranging from À150 to 550 C and strain rates in the range of 1000 to 5000 s À1 using a compressive split Hopkinson pressure bar. It is found that the flow stress increases with increasing strain rate, but decreases with increasing temperature. The highest work hardening rate is observed in the specimen at the lowest temperature (À150 C) and the highest strain rate (5000 s À1 ). However, the work hardening rate is weakened by the deformation-induced temperature rise under high strain and strain rate conditions. The strain rate sensitivity increases with increasing strain rate, but decreases with increasing temperature. The activation energy varies as a function of the strain rate and temperature, and has a maximum value of 40 kJ/mol. The greatest thermal softening effect occurs at the highest strain rate of 5000 s À1 and temperatures in the range À150$25 C. The microstructural observations confirm that the mechanical response of the Inconel 718 specimens is directly related to the effects of the strain rate and temperature on the evolution of the impacted microstructure.

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“…Экспериментальные исследования динамических свойств проводились на экспери-ментальной установке с разрезным стержнeм Гопкинсона [29][30][31][32][33] (рис. 3).…”

Section: экспериментальные исследования пористого гранулированного слunclassified

Experimental Study of Deformation Properties of a Bulk Layer From Plumbum Balls Under Dynamic and Quasistatic Loading

2017

PNRPU MB

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Methodological aspects of studying dynamic material properties using the Kolsky method

Cited by 134 publications

References 5 publications

Investigation of strength properties of freshwater ice

Investigation of strength properties of freshwater ice

Dynamic Impact Response of Inconel 718 Alloy under Low and High Temperatures

Experimental Study of Deformation Properties of a Bulk Layer From Plumbum Balls Under Dynamic and Quasistatic Loading

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