Spectral Analysis of EME Signal

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F06%3APU58232" target="_blank" >RIV/00216305:26220/06:PU58232 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Spectral Analysis of EME Signal

Original language description

The new measuring method for detection of small cracks fine spectra of electromagnetic and acoustic emission (EME and AE) signals is described. It requires wide band ultra-low noise amplifiers, analogy filters, optimization of signal to noise ratio of sensors and application of noise elimination methods. The analyses of noise sources in sensors and preamplifiers are given. They are thermal noise, polarization noise and low frequency 1/f noise. Measuring set-up background noise suppression including electromagnetic shielding allows us to detect signals in the range of 100 nV. This measuring set-up was used to observe crack creation in granite samples. AE and EME signals show different behaviour in the first interval of about 10 &#61549;s just after crack creation. In frequency domain EME spectra show that in the first stage of crack creation the spectrum is given by crack walls eigen vibration, internal friction and sample electrical conductivity. We observed that crack opening and crac

Czech name

Spektrálníanalýza EME signálu

Czech description

The new measuring method for detection of small cracks fine spectra of electromagnetic and acoustic emission (EME and AE) signals is described. It requires wide band ultra-low noise amplifiers, analogy filters, optimization of signal to noise ratio of sensors and application of noise elimination methods. The analyses of noise sources in sensors and preamplifiers are given. They are thermal noise, polarization noise and low frequency 1/f noise. Measuring set-up background noise suppression including electromagnetic shielding allows us to detect signals in the range of 100 nV. This measuring set-up was used to observe crack creation in granite samples. AE and EME signals show different behaviour in the first interval of about 10 &#61549;s just after crack creation. In frequency domain EME spectra show that in the first stage of crack creation the spectrum is given by crack walls eigen vibration, internal friction and sample electrical conductivity. We observed that crack opening and crac

Type

D - Article in proceedings

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2006

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Proceedings / EMPS 2006 - 4th European Microelectronics and Packaging Symposium with Table-Top Exhibition

ISBN

961-91023-4-7

ISSN

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e-ISSN

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Number of pages

4

Pages from-to

315-318

Publisher name

MIDEM

Place of publication

Ljubljana, Slovenia

Event location

Terme Catez

Event date

May 21, 2006

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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