TY - GEN
T1 - Analyzing deformation and fracture of dielectrics by integral characteristics of their electromagnetic emission
AU - Yavorovich, Lyudmila
AU - Bespalko, Anatoly
AU - Fedotov, Pavel
AU - Popelyaev, Aleksey
PY - 2016
Y1 - 2016
N2 - Revealing of fracture harbingers of dielectric materials, that are under mechanical stress, is an important practical and scientific problem. Local stresses, produced by mechanical impact, can exceed the local strength, and a stress-strain state changes. As the result of such impacts, microcracks appear and lead to fracture. During change of stress-strain state, mechanoelectric transformations occur, that generate electromagnetic emission. So we aimed to observe regularities in electromagnetic emission characteristics. Rock samples, collected from Tashtagol ore-mine of Kemerovo region of Russia, were used as dielectric materials for the research. For analysis of rock samples deformation and fracture, integral characteristics of time series of electromagnetic emission were used. Observed, that low-strength samples accumulate and relax elastic energy stepwise unlike to high-strength samples, that accumulate energy linearizely. Differences in dispersion characteristics of samples differing with strength are observed. The research showed usability of suggested algorithms.
AB - Revealing of fracture harbingers of dielectric materials, that are under mechanical stress, is an important practical and scientific problem. Local stresses, produced by mechanical impact, can exceed the local strength, and a stress-strain state changes. As the result of such impacts, microcracks appear and lead to fracture. During change of stress-strain state, mechanoelectric transformations occur, that generate electromagnetic emission. So we aimed to observe regularities in electromagnetic emission characteristics. Rock samples, collected from Tashtagol ore-mine of Kemerovo region of Russia, were used as dielectric materials for the research. For analysis of rock samples deformation and fracture, integral characteristics of time series of electromagnetic emission were used. Observed, that low-strength samples accumulate and relax elastic energy stepwise unlike to high-strength samples, that accumulate energy linearizely. Differences in dispersion characteristics of samples differing with strength are observed. The research showed usability of suggested algorithms.
KW - Dielectric material
KW - Electromagnetic emission
KW - Mechanoelectric transformations
KW - Time series
UR - http://www.scopus.com/inward/record.url?scp=84959096954&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84959096954&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/KEM.683.36
DO - 10.4028/www.scientific.net/KEM.683.36
M3 - Conference contribution
AN - SCOPUS:84959096954
SN - 9783038357292
T3 - Key Engineering Materials
SP - 36
EP - 43
BT - Multifunctional Materials
A2 - Kurzina, Irina
A2 - Godymchuk, Anna
PB - Trans Tech Publications Ltd
T2 - 12th International Conference on Prospects of Fundamental Sciences Development, PFSD 2015
Y2 - 21 April 2015 through 24 April 2015
ER -