Selected applications of acoustic methods in building materials monitoring

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F17%3APU125600" target="_blank" >RIV/00216305:26110/17:PU125600 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Selected applications of acoustic methods in building materials monitoring

Popis výsledku v původním jazyce

Non-destructive acoustic analysis methods, the Impact-echo method as a traditional and the Acoustic Emission method as the non-traditional method for civil engineering, were used for several experiments. The principle of the Impact-echo method is based on analysing an elastic-impulse-induced mechanical wave. The thus generated wave propagates throughout the specimen structure being rebounded by defects located in the specimen bulk or on the surface. The time difference between the emitted wave and the rebounded one is captured by a sensor, which shows the signal waveform. This signal describes transient local vibrations, which are caused by the mechanical wave multiple reflections inside the structure. The dominant frequencies of these vibrations give an account of the condition of the structure, at which the waves are, rebounded. Acoustic Emission is a phenomenon of stress wave radiation caused by a dynamic reconstruction of material’s structure that accompanies processes of deformation and fracture. Crack propagation is one of the macroscopic sources of acoustic emission.

Název v anglickém jazyce

Selected applications of acoustic methods in building materials monitoring

Popis výsledku anglicky

Non-destructive acoustic analysis methods, the Impact-echo method as a traditional and the Acoustic Emission method as the non-traditional method for civil engineering, were used for several experiments. The principle of the Impact-echo method is based on analysing an elastic-impulse-induced mechanical wave. The thus generated wave propagates throughout the specimen structure being rebounded by defects located in the specimen bulk or on the surface. The time difference between the emitted wave and the rebounded one is captured by a sensor, which shows the signal waveform. This signal describes transient local vibrations, which are caused by the mechanical wave multiple reflections inside the structure. The dominant frequencies of these vibrations give an account of the condition of the structure, at which the waves are, rebounded. Acoustic Emission is a phenomenon of stress wave radiation caused by a dynamic reconstruction of material’s structure that accompanies processes of deformation and fracture. Crack propagation is one of the macroscopic sources of acoustic emission.

Druh

C - Kapitola v odborné knize

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/LO1408" target="_blank" >LO1408: AdMaS UP - Pokročilé stavební materiály, konstrukce a technologie</a><br>

Návaznosti

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

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název knihy nebo sborníku

Research and Modelling in Civil Engineering 2017

ISBN

978-83-7365-474-7

Počet stran výsledku

17

Strana od-do

63-80

Počet stran knihy

156

Název nakladatele

Koszalin University of Technology Publishing House

Místo vydání

Koszalin

Kód UT WoS kapitoly

—