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Implementation of viscoelastic Hopkinson bars [PDF]
EPJ Web of Conferences, 2012 Knowledge of the properties of soft, viscoelastic materials at high strain rates are important in furthering our understanding of their role during blast or impact events.
Govender R., Cloete T., Curry R.
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Improved specimen recovery in tensile split Hopkinson bar. [PDF]
Philos Trans A Math Phys Eng Sci, 2014 This paper presents an improved specimen recovery method for the tensile split Hopkinson bar (TSHB) technique. The method is based on the trapping of residual stress waves with the use of momentum trap bars. As is well known, successful momentum trapping in TSHB is highly sensitive to experimental uncertainties, especially on the incident bar side of ...
Isakov M, Hiermaier S, Kuokkala VT.
europepmc +5 more sources
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2014 In order to perform experimental identification of high strain rate material models, engineers have only a very limited toolbox based on test procedures developed decades ago. The best example is the so-called split Hopkinson pressure bar based on the bar concept introduced 100 years ago by Bertram Hopkinson to measure blast pulses.
Pierron, F., Zhu, H., Siviour, C.
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Dynamic rock tests using split Hopkinson (Kolsky) bar system – A review
Journal of Rock Mechanics and Geotechnical Engineering, 2015 Dynamic properties of rocks are important in a variety of rock mechanics and rock engineering problems. Due to the transient nature of the loading, dynamic tests of rock materials are very different from and much more challenging than their static ...
Kaiwen Xia, Wei Yao
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An overview of methods used in dynamic testing of materials [PDF]
Biuletyn Wojskowej Akademii Technicznej, 2023 The paper presents an elemental description and methodology of tests that take intoaccount the effect of high strain rate on materials strength parameters. The article describes suchtesting methodology as: Taylor test, split Hopkinson pressure bar method,
Adam Jeschke, Robert Panowicz
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Development of an innovative specimen geometry for tensile split Hopkinson tests [PDF]
EPJ Web of Conferences, 2021 Specimen manufacturing is one of the critical issues to solve during a dynamic material characterization, especially by mean of the Hopkinson bar technique. In particular, concerning tensile testing, the sample is generally axisymmetric with two threaded
Peroni Marco +2 more
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Design and Simulation of Insert to Measure Dynamic Sliding Friction in a Split-Hopkinson Pressure Bar [PDF]
EPJ Web of Conferences, 2021 Interfacial friction is a key aspect to understanding and modelling dynamic processes in which materials interact. However, friction is a complex phenomenon that depends on a multitude of factors, including sliding velocity.
Euser Virginia +4 more
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Feasibility Study of a Combined Tension-Torsion Hopkinson Bar [PDF]
EPJ Web of Conferences, 2021 The increasing interest to improve the description of the plastic behavior and the fracture prediction for ductile materials under complex loading conditions conducted the researchers to overcome the J2 plasticity theory.
Sasso Marco, Mancini Edoardo
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Biaxial Compression Tests on Hopkinson Bars [PDF]
The 18th International Conference on Experimental Mechanics, 2018 A biaxial compression Hopkinson bar set-up bas been designed. It consists in a projectile, an input bar and two co-axial output bars. After the projectile impact on the input bar, the internal output bar measures the axial loading of the cross sample whereas the external output bar measures its transversal loading via a mechanism with sliding surfaces.
Bastien Durand, Ahmed Zouari, Han Zhao
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Crystals, 2023 Polycrystalline copper samples were deformed in the range of strain rate between ~10−3 and 107 s−1 using a material testing machine, split Hopkinson pressure bar and electric gun.
Zhijian Fan +4 more
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