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| Titel |
Wavelet analysis on pressure stimulated currents emitted by marble samples |
| VerfasserIn |
P. Kyriazis, C. Anastasiadis, D. Triantis, F. Vallianatos |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 6, no. 6 ; Nr. 6, no. 6 (2006-10-10), S.889-894 |
| Datensatznummer |
250003800
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| Publikation (Nr.) |
 copernicus.org/nhess-6-889-2006.pdf |
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| Zusammenfassung |
| 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 rocks, as far as the current emission is concerned,
akin to the "Kaiser effect" in acoustic emissions, which accompany rock
fracturing. Macroscopic signal processing shows similarities and differences
between the currents emitted during successive loading and wavelet analysis
can reveal significant differences between the currents of each loading
cycle that contain valuable information for the micro and macro cracks in
the specimen as well as information for the remaining strength of the
material. Wavelets make possible the time localization of the energy of the
electric signal emitted by stressed specimens and can serve as method to
differentiate between compressed and uncompressed samples, or to determine
the deformation level of specimens. |
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