A Study on the Fracture of Cementitious Materials in Terms of the Rate of Acoustic Emissions in the Natural Time Domain-Reference-Cited by-同舟云学术

A Study on the Fracture of Cementitious Materials in Terms of the Rate of Acoustic Emissions in the Natural Time Domain

Published:2023-05-20 Issue:10 Volume:13 Page:6261
ISSN:2076-3417
Container-title:Applied Sciences
language:en
Short-container-title:Applied Sciences

Author:

Triantis Dimos¹^ORCID,Stavrakas Ilias¹^ORCID,Loukidis Andronikos¹^ORCID,Pasiou Ermioni D.²^ORCID,Kourkoulis Stavros K.²^ORCID

Affiliation:

1. Electronic Devices and Materials Laboratory, Department of Electrical & Electronics Engineering, School of Engineering, University of West Attica, 250 Thivon Avenue, 122 44 Athens, Greece

2. Laboratory for Testing and Materials, Department of Mechanics, School of Applied Mathematical & Physical Sciences, National Technical University of Athens, Zografou Campus, 157 73 Athens, Greece

Abstract

A novel approach for describing the acoustic activity in brittle structural materials while they are loaded mechanically at levels close to those causing macroscopic fracture is proposed. It is based on the analysis of the rate of acoustic emissions in terms of the Natural Time concept. Experimental data from protocols with either intact or notched beams, made of cementitious materials, subjected to three-point bending are analyzed. It is concluded that in case the acoustic activity is described with the aid of the F-function in the Natural Time domain, its evolution is governed by a power law, independently of geometrical details and the type of the loading scheme. It appears that the onset of validity of this law provides an interesting pre-failure indicator.

Publisher

MDPI AG

Subject

Fluid Flow and Transfer Processes,Computer Science Applications,Process Chemistry and Technology,General Engineering,Instrumentation,General Materials Science

Link

https://www.mdpi.com/2076-3417/13/10/6261/pdf

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