Results 31 to 40 of about 24,545 (231)

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., Pernas-Sánchez J., Artero-Guerrero J.A., López Puente J.   +3 more
doaj   +1 more source

Development of “Dropkinson” Bar for Intermediate Strain-rate Testing

EPJ Web of Conferences, 2018
A new apparatus – “Dropkinson Bar” – has been successfully developed for material property characterization at intermediate strain rates. This Dropkinson bar combines a drop table and a Hopkinson bar.
Song Bo, Sanborn Brett, Heister Jack, Everett Randy, Martinez Thomas, Groves Gary, Johnson Evan, Kenney Dennis, Knight Marlene, Spletzer Matthew   +9 more
doaj   +1 more source

Performance characteristics of Hopkinson’s set-up pneumatic launcher

Acta Polytechnica, 2021
The paper presents a performance characteristics of a pneumatic launcher, which is an important element of the split Hopkinson bar set-up (SHPB) at the Department of Military Engineering and Infrastructure (the Military University of Technology in Warsaw)
Kamil Sobczyk, Leopold Kruszka, Ryszard Chmielewski, Ryszard Rekucki   +3 more
doaj   +1 more source

Manual of GUI Program Governing ABAQUS Simulations of Bar Impact Test for Calibrating Bar Properties, Measured Strain, and Impact Velocity

Data, 2023
Bar impact instruments, such as the (split) Hopkinson bars and direct impact Hopkinson bars, measure blast/impact waves or mechanical properties of materials at high strain rates.
Hyunho Shin
doaj   +1 more source

The Direct Impact Method for Studying Dynamic Behavior of ‎Viscoplastic Materials [PDF]

Journal of Applied and Computational Mechanics, 2022
This work is devoted to the direct impact method for determining the deformation diagrams of viscoplastic materials at high strain rates. As the conventional Split Hopkinson Pressure Bar method, the direct impact method is based on the measuring bar ...
Artem Basalin, Aleksandr Konstantinov, Leonid Igumnov, Alexandr Belov, Anatoliy Bragov, Victor Eremeev   +5 more
doaj   +1 more source

Experimental study of the high strain rate shear behaviour of Ti6Al4V [PDF]

, 2011
Three different high strain rate shear test techniques are applied on the titanium alloy Ti6Al4V. Two techniques for testing of bulk materials and one technique for sheet materials are used: torsion of thin-walled tubes, compression of hat-shaped ...
Degrieck, Joris, Peirs, Jan, Verleysen, Patricia   +2 more
core   +2 more sources

First application of the 3D-MHB on dynamic compressive behavior of UHPC

EPJ Web of Conferences, 2015
In order to study the dynamic behaviour of material in confined conditions a new machine was conceived and called 3D-Modified Hopkinson Bar (3D-MHB). It is a Modified Hopkinson Bar apparatus designed to apply dynamic loading in materials having a tri ...
Cadoni Ezio, Dotta Matteo, Forni Daniele, Riganti Gianmario, Albertini Carlo   +4 more
doaj   +1 more source

Mechanical Response of HPFRCC in Tension and Compression at High Strain Rate and High Temperature

Engineering Transactions, 2014
The mechanical response of High Performance Fibre-Reinforced Cementitious Composite (HPFRCC) has been analyzed at high strain rates and high temperature.
E. CADONI, A. M. BRAGOV, A. CAVERZAN, M. DI PRISCO, A. KONSTANTINOV, A. LOMUNOV   +5 more
doaj   +1 more source

Application of photon Doppler velocimetry to direct impact Hopkinson pressure bars. [PDF]

, 2016
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 ...
Jardine, Andrew P, Lea, Lewis J
core   +2 more sources

Large scale high strain-rate tests of concrete

EPJ Web of Conferences, 2012
This work presents the stages of development of some innovative equipment, based on Hopkinson bar techniques, for performing large scale dynamic tests of concrete specimens.
Kiefer R., Magonette G., Viaccoz B., Solomos G., Peroni M.   +4 more
doaj   +1 more source