Results 21 to 30 of about 24,236 (228)
Theoretical instructions for experimenting controllable Hopkinson pressure bar
Polymer Testing, 2022 Hopkinson bar loading technique needs theoretical instruction for desired stress waves, to achieve controllable deformation under constant high strain rate loading, for it is the indispensable access while investigating material's rate-dependence and ...
Yinggang Miao +5 more
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A new apparatus for large scale dynamic tests on materials [PDF]
, 2016 The development of an innovative apparatus, based on Hopkinson bar techniques, for performing large scale dynamic tests is presented and discussed. The activity is centered at the recently upgraded HOPLAB facility, which is basically a split Hopkinson ...
CAVERZAN Alessio +2 more
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Dynamic tensile strength enhancement of concrete in split Hopkinson pressure bar test
Advances in Mechanical Engineering, 2018 Split Hopkinson pressure bar technique has been widely used to measure the dynamic tensile strength of concrete materials. Most experimental results show that the tensile strength of concrete material increases with strain rates.
Jingyi Chen +4 more
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Two-wave photon Doppler velocimetry measurements in direct impact Hopkinson pressure bar experiments
EPJ Web of Conferences, 2015 Direct impact Hopkinson pressure bar systems offer many potential advantages over split Hopkinson pressure bars, including access to higher strain rates, higher strains for equivalent striker velocity and system length, lower dispersion and faster ...
Lea Lewis J., Jardine Andrew P.
doaj +1 more source
Advances in the Hopkinson bar testing of irradiated/non-irradiated nuclear materials and large specimens [PDF]
, 2014 A brief review of the technological advances of the Hopkinson bar technique in tension for the study of irradiated/non-irradiated nuclear materials and the development of this technology for large specimens is presented.
ALBERTINI Carlo +2 more
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Behavior of high-density polyethylene at high strain rates
Applied and Computational Mechanics, 2021 The Hopkinson split pressure bar (HSPB) was used for the testing of three polymers at strain rates between 10^2 to 10^3 1/s. Higher strain rates were achieved using the direct Hopkinson test.
Trnka J. +3 more
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Diagnostic techniques in deflagration and detonation studies [PDF]
, 2015 Advances in experimental, high-speed techniques can be used to explore the processes occurring within energetic materials. This review describes techniques used to study a wide range of processes: hot-spot formation, ignition thresholds, deflagration ...
Field, JE +3 more
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Analysis of high velocity impacts of quasibrittle material fragments with a Hopkinson bar [PDF]
EPJ Web of Conferences, 2021 In this work it has been characterized the impact behaviour of quasibrittle fragments against a Hopkinson bar in a wide range of impact velocities (70-180 m/s). Hopkinson bar is designed to measure the impact forces thanks to a proper instrumentation. In
Rodríguez-Sereno J. M. +3 more
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High Speed Blanking: An Experimental Method to Measure Induced Cutting Forces [PDF]
, 2013 Lien vers la version éditeur: http://link.springer.com/article/10.1007/s11340-013-9738-1A new blanking process that involves punch speed up to 10 ms −1 has obvious advantages in increased productivity.
GAUDILLIERE, Camille +4 more
core +5 more sources
Sensors, 2016 Despite its extreme significance, dynamic linearity measurement for high-g accelerometers has not been discussed experimentally in previous research. In this study, we developed a novel method using a dual-warhead Hopkinson bar to measure the dynamic ...
Yunbo Shi +8 more
doaj +1 more source