Spectral Analysis of EME Signal

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F06%3APU62984" target="_blank" >RIV/00216305:26220/06:PU62984 - 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 fine spectra of small cracks, 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 the 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 also involving the electromagnetic shielding allows us to detect signals in the range of 1 to 100 nV. This measuring set-up was used to observe the crack creation in the granite samples. AE and EME signals show different behaviour in the first interval of about 20&#61549;s, just after the crack creation. For the first stage of crack creation, the frequency spectrum of EME signal is given by the eigen vibrations of crack walls, by the internal friction and the sample electrical conductivity. We obs

Czech name

Spektrální analýza EME signálu

Czech description

The new measuring method for detection fine spectra of small cracks, 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 the 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 also involving the electromagnetic shielding allows us to detect signals in the range of 1 to 100 nV. This measuring set-up was used to observe the crack creation in the granite samples. AE and EME signals show different behaviour in the first interval of about 20&#61549;s, just after the crack creation. For the first stage of crack creation, the frequency spectrum of EME signal is given by the eigen vibrations of crack walls, by the internal friction and the sample electrical conductivity. We obs

Type

D - Article in proceedings

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

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Project

<a href="/en/project/GA102%2F06%2F0866" target="_blank" >GA102/06/0866: Nonlinear electroultrasonic spectroscopy of solids</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>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

DGZfP Proceedings BB 103-CD

ISBN

3-931381

ISSN

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e-ISSN

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Number of pages

6

Pages from-to

199-204

Publisher name

DGZfP

Place of publication

Berlin

Event location

Berlin

Event date

Sep 25, 2006

Type of event by nationality

EUR - Evropská akce

UT code for WoS article

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