Electromagnetic emission caused by the fracturing of piezoelectric crystals with an arbitrarily oriented moving crack

Gernets, A.A.; Makarets, M. V.; Koshevaya, S.; Grimalsky, V.; Romero, Diego J.; Kotsarenko, A.

doi:10.1016/j.pce.2003.12.006

Cited by 11 publications

(12 citation statements)

References 3 publications

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“…Therefore, it is possible to ignore the boundary conditions for the EM field and mechanical strains, considering the medium as unbounded, although it is assumed that a piezoeffective inclusion of size L is placed inside the plate ( Fig. 1) (Gernets et al 2004;Koshevaya et al 2008). Then the equations of motion of the medium and the equations of the EM field, written in the crystallographic frame of the piezocrystal in SI units, take the following form:…”

Section: Model and Basic Equationsmentioning

confidence: 99%

“…1 and 2 are dimensionless, while the others have proper SI units. Equations 1 and 2 have been solved by using a Fourier transform of the spatial coordinates with infinite limits and a Laplace transform with respect to time t (Gernets et al 2004;Koshevaya et al 2008).…”

Section: Model and Basic Equationsmentioning

confidence: 99%

“…In the near zone, the effective magnetic dipoles are the sources of an alternating magnetic field. To estimate the parameters, it is necessary to use the above-mentioned material coefficients for piezoelectric quartz in matrix Now it is possible to use the following estimations obtained in Gernets et al (2004) for the magnetic moment and the vortex current created by a single moving displacement crack through a crystal of quartz:…”

Section: Model and Basic Equationsmentioning

confidence: 99%

“…Electromagnetic emission (EME) caused by fracturing of crystals in plates has been studied theoretically (Surkov et al 2003;Gernets et al 2004;Koshevaya et al 2008). In Grimalsky et al (2004), the theory was used to explain events for Jupiter, providing a good test of such calculations for other phenomena.…”

Section: Introductionmentioning

confidence: 99%

“…The analysis model, in particular in piezocrystals (Gernets, et al 2004;Koshevaya et al 2008), has been considered with finite size and a uniformly moving crack with its linear front parallel to the optical axis of the crystal. The crack tip instantly begins uniform motion at time t = 0 and stops at time t = T [ 0.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Analysis of explosions and seismic phenomena based on electromagnetic cracking of piezoelectric and piezomagnetic plates

Koshevaya¹,

Makarets

Kotsarenko

et al. 2011

Nat Hazards

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Electromagnetic emission caused by fracturing of piezoelectric and piezomagnetic crystals in plates and its application for remote sensing of explosions and natural seismic and volcanic phenomena were studied theoretically. The difference of emission from piezoelectric and piezomagnetic plates in cases of explosions versus seismic and volcanic phenomena enables use of this analysis method for phenomenon identification. The analysis herein is based on a model of a plate of finite size with a uniformly moving crack. It has been demonstrated that time-dependent mechanical stresses, which exist in the vicinity of the crack apex, are sources of an alternating electromagnetic field. The nonstationary mechanical stresses in the vicinity of the moving crack cause nonstationary polarization currents, which include both potential and vortical components in the case of a piezoelectric crystal but only the vortical component in the case of a piezomagnetic crystal. In both cases, it is possible to observe the nonstationary magnetic dipole which is the source of the excited magnetic field in the near zone. Such a dipole is created due to the motion of the crack apex and depends on the specific crystalline symmetry. Comparison of the two types of crystal (piezoelectric and piezomagnetic) shows that emission from the piezomagnetic crystal is more effective. A very important result is that it is possible to observe the difference between seismic and volcanic versus industrial phenomena through analysis of the unloading wave, which is absent in the case of industrial phenomena. This opens the possibility to identify the type of disaster and take the correct decision.

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Section: Model and Basic Equationsmentioning

confidence: 99%

Section: Model and Basic Equationsmentioning

confidence: 99%

Section: Model and Basic Equationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Analysis of explosions and seismic phenomena based on electromagnetic cracking of piezoelectric and piezomagnetic plates

Koshevaya¹,

Makarets

Kotsarenko

et al. 2011

Nat Hazards

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An Integrated Study of the Dynamics of Electromagnetic and Acoustic Regimes During Failure of Complex Macrosystems Using Rock Blocks

et al. 2010

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Piezoelectric responses of brittle rock mass containing quartz to static stress and exploding stress wave respectively

Guo-xiang

Liang

2008

J. Cent. South Univ. Technol.

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The electromagnetic emission(EME) induced from the rock containing piezoelectric materials was investigated under both static stress and exploding stress wave in the view of piezoelectric effect. The results show that the intensity of the EME induced from the rock under static stress increases with increasing stress level and loading rate; the relationship between the amplitude of the EME from the rock under different modes of stress wave and elastic parameters and propagation distance was presented. The intensity of the EME relates not only to the strength and elastic moduli of rock masses, but also to the initial damage of the rock. The intensity of EME induced by stress wave reaches the highest at the explosion-center and attenuates with the propagation distance. The intensity of EME increases with increasing the elastic modulus and decreases with increasing initial damage. The results are in good agreement with the experimental results.

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Electromagnetic emission caused by the fracturing of piezoelectric crystals with an arbitrarily oriented moving crack

Cited by 11 publications

References 3 publications

Analysis of explosions and seismic phenomena based on electromagnetic cracking of piezoelectric and piezomagnetic plates

Analysis of explosions and seismic phenomena based on electromagnetic cracking of piezoelectric and piezomagnetic plates

An Integrated Study of the Dynamics of Electromagnetic and Acoustic Regimes During Failure of Complex Macrosystems Using Rock Blocks

Piezoelectric responses of brittle rock mass containing quartz to static stress and exploding stress wave respectively

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