Results 181 to 190 of about 4,813 (219)

Data processing in the split Hopkinson pressure bar tests

International Journal of Impact Engineering, 1994
Summary The effect on dynamic stress—strain curves of dispersion and shifting of elastic strain pulses travelling in a split Hopkinson pressure bar is reported. The dispersion correction is done in the frequency domain after employing FFT algorithm by adjusting the phase of each Fourier component. The three pulses (incident, reflected and transmitted)
J.M. Lifshitz, H. Leber
openaire   +1 more source

Split Hopkinson pressure bar experiments on polymeric foams

International Journal of Vehicle Design, 2005
Proper modifications are required when a split Hopkinson pressure bar (SHPB) is used to determine the dynamic compressive properties of polymeric foams. Pulse shaping is necessary to ensure valid testing conditions: constant strain-rate deformation under dynamically equilibrated stresses, which need to be experimentally verified.
B. Song, W. Chen, X. Jiang
openaire   +1 more source

Split-Hopkinson pressure bar tests on pure tantalum

AIP Conference Proceedings, 1998
Pure tantalum (Ta) was loaded in compression by a split-Hopkinson pressure bar (SHPB) to strain rates from 450 to 6350 s−1. The results are compared with SHPB data for commercial Ta and with predictions from the constitutive model for Ta developed by Zerilli and Armstrong (Z-A). The main conclusions are: (1) the flow stress versus log strain rate agree
Richard D. Dick, Ronald W. Armstrong, John D. Williams   +2 more
openaire   +1 more source

Thickness effects in split Hopkinson pressure bar tests

Polymer, 1993
Abstract Results are presented for the high strain rate behaviour of a medium and high density polyethylene, polycarbonate and poly(ether ether ketone) in compression for strain rates up to 104s−1 obtained using a split Hopkinson pressure bar apparatus.
N.N Dioh, P.S Leevers, J.G Williams
openaire   +1 more source

Dispersion Correction for Split-Hopkinson Pressure Bar Data

1988
Abstract : Large diameter Split-Hopkinson Pressure Bar (SHPB) systems required a correction of the strain signals to account for wave dispersion. Using a Fast Fourier transform (FFT) algorithm a wave dispersion correction program was developed for the 3.0 inch diameter SHPB at the University of Florida and the 2. 0 inch diameter SHPB at Tyndall AFB FL.
J. C. Gong, E. Jerome, D. A. Jenkins, L. E. Malvern   +3 more
openaire   +1 more source

Split Hopkinson Pressure Bar Test Results

2022
Derek G. Spear, Anthony N. Palazotto
openaire   +1 more source

The Effect of Sabot Mass on the Striker Bar for Split Hopkinson Pressure Bar Experiments

Experimental Mechanics, 2002
M. J. Forrestal, D. J. Frew, W. Chen
openaire   +1 more source

Examination of Validity for Viscoelastic Split Hopkinson Pressure Bar Method

The examination of the accuracy for a split Hopkinson pressure bar method with viscoelastic input and output bars (viscoelastic SHPB method), which is one of the methods of evaluating the dynamic properties for viscoelstic materials, is executed. The key-point for accurately determining the dynamic properties of low impedance materials lies in how to ...
T. Tamaogi, Y. Sogabe
openaire   +1 more source

Influence of friction on the dynamic increase factor of concrete compressive strength in a split Hopkinson pressure bar test

Cement and Concrete Composites, 2022
Kyoung-Min Kim, Sangho Lee, Jae-Yeol Cho   +2 more
exaly  

Custom control system for Split Hopkinson Pressure bars

2021
openaire   +1 more source