Results 1 to 10 of about 16,964 (133)

Experimental research on influence mechanism of loading rates on rock pressure stimulated currents

International Journal of Mining Science and Technology, 2023
The study of pressure stimulated current (PSC) changes of rocks is significant to monitor dynamic disasters in mines and rock masses. The existing studies focus on change laws and mechanism of currents generated under the loading of rocks.
Min Li, Zhijun Lin, Shiliang Shi, Deming Wang, Yi Lu, He Li, Qing Ye, Xiaonan Zhang   +7 more
doaj   +4 more sources

Wavelet analysis on pressure stimulated currents emitted by marble samples [PDF]

Natural Hazards and Earth System Sciences, 2006
This paper presents a wavelet based method of analysis of experimentally recorded weak electric signals from marble specimens which have undergone successive abrupt step loadings. Experimental results verify the existence of "memory effects" in
P. Kyriazis, P. Kyriazis, C. Anastasiadis, D. Triantis, F. Vallianatos   +4 more
doaj   +6 more sources

Pressure Stimulated Currents (PSC)in marble samples

Annals of Geophysics, 2004
The electrical behaviour of marble samples from Penteli Mountain was studied while they were subjected to uniaxial stress. The application of consecutive impulsive variations of uniaxial stress to thirty connatural samples produced Pressure Stimulated ...
F. Vallianatos, I. Stavrakas, D. Triantis, C. Anastasiadis   +3 more
doaj   +3 more sources

Pressure stimulated currents in rocks and their correlation with mechanical properties [PDF]

Natural Hazards and Earth System Sciences, 2004
The spontaneous electrification of marble samples was studied while they were subjected to uniaxial stress. The Pressure Stimulated Current (PSC) technique was applied to measure the charge released from compressed Dionysos marble samples, while they ...
I. Stavrakas, D. Triantis, Z. Agioutantis, S. Maurigiannakis, V. Saltas, F. Vallianatos, M. Clarke   +6 more
doaj   +7 more sources

Correlation of pressure stimulated currents in rocks with the damage parameter

Annals of Geophysics, 2007
Pressure Stimulated Current (PSC) experiments were conducted on marble samples to correlate PSC with the damage parameter, D. The phenomena and procedures taking place in the vicinity of the fracture limit were observed and analytically ...
F. Vallianatos, D. Triantis, I. Stavrakas, C. Anastasiadis   +3 more
doaj   +3 more sources

Comments on the depolarization currents stimulated by variations of temperature or pressure†

Journal of Physics and Chemistry of Solids, 1992
Abstract The usual thermally stimulated depolarization current technique consists of measuring the depolarization current of previously polarized dipoles under increasing temperature (after having switched off the electric field at a low temperature).
P Varotsos
exaly   +3 more sources

Acoustic Emissions versus Pressure Stimulated Currents during bending of restored marble epistyles: Preliminary results [PDF]

Fracture and Structural Integrity, 2017
The efficiency of two modern sensing techniques, namely the “Acoustic Emissions” and the “Pressure Stimulated Currents” ones, when they are used as Continuous Structural Health Monitoring tools, is assessed experimentally.
Stavros K. Kourkoulis, Ioanna Dakanali, Ermioni D. Pasiou, Ilias Stavrakas, Dimos Triantis   +4 more
doaj   +3 more sources

Damage evolution in marble under uniaxial compression monitored by Pressure Stimulated Currents and Acoustic Emissions

Fracture and Structural Integrity, 2019
The spatiotemporal evolution of damage in marble speci­mens under uniaxial compression is monitored using Pressure Stimulated Currents (PSCs) and Acoustic Emissions (AEs). The novelty of the study is the use of an integrated grid of sensors (instead of a
Ilias Stavrakas, Stavros Kourkoulis, Dimos Triantis   +2 more
doaj   +5 more sources

The relaxation processes of Pressure Stimulated Currents under the concept of Non-extensive statistical physics

Procedia Structural Integrity, 2020
Abstract This study presents the results of Pressure Stimulated Currents (PSC) analysis using non-extensive statistical physics (NESP) approach when marble and amphibolite specimens were subjected to mechanical stress up to fracture. The specimens were subjected to a constant uniaxial stress, interrupted by an abrupt step-wise stress increase (Step ...
Andronikos Loukidis, Ilias Stavrakas, Dimos Triantis   +2 more
exaly   +2 more sources

Monitoring the mechanical response of early aged cement-mortar specimens using the Pressure Stimulated Currents technique

Procedia Structural Integrity, 2020
Abstract The time evolution of the electric signals emitted during uniaxial compression of prismatic cement mortar specimens is investigated in this study. The electric signals are recorded in the form of very weak electric currents, and their analysis is achieved in terms of the Pressure Stimulated Currents technique.
Dimos Triantis, Ilias Stavrakas, Ermioni D Pasiou   +2 more
exaly   +2 more sources