Publication result detail

The analysis of acoustic emission signals detected during the loading of cement-based materials

KOCÁB, D.; TOPOLÁŘ, L.; KUCHARCZYKOVÁ, B.; HALAMOVÁ, R.

Original Title

The analysis of acoustic emission signals detected during the loading of cement-based materials

English Title

The analysis of acoustic emission signals detected during the loading of cement-based materials

Type

WoS Article

Original Abstract

The article deals with the experimental investigation of changes in the internal structure of materials subjected to loading. The main aim of the experiments was to identify crack formation and their propagation within the elastic part of the stress-strain diagram and define its significance and influence on the overall failure behaviour of specimens under loading. The specimens' overall behaviour was monitored using the non-destructive testing method of acoustic emission (AE). Three different cement-based composites, which differed mainly in the maximum value of the expected static modulus of elasticity, were manufactured for the purpose of experiments. Based on the results, it can be stated that the increased number of micro-cracks in the specimens' internal structure is reflected in an increased number of AE events. The specimens with a lower value of the static modulus of elasticity showed higher AE activity during all the periods of loading being investigated. In addition, the AE energy released due to the formation of micro-cracks was the highest in specimens with a lower value of the modulus of elasticity.

English abstract

The article deals with the experimental investigation of changes in the internal structure of materials subjected to loading. The main aim of the experiments was to identify crack formation and their propagation within the elastic part of the stress-strain diagram and define its significance and influence on the overall failure behaviour of specimens under loading. The specimens' overall behaviour was monitored using the non-destructive testing method of acoustic emission (AE). Three different cement-based composites, which differed mainly in the maximum value of the expected static modulus of elasticity, were manufactured for the purpose of experiments. Based on the results, it can be stated that the increased number of micro-cracks in the specimens' internal structure is reflected in an increased number of AE events. The specimens with a lower value of the static modulus of elasticity showed higher AE activity during all the periods of loading being investigated. In addition, the AE energy released due to the formation of micro-cracks was the highest in specimens with a lower value of the modulus of elasticity.

Keywords

Acoustic emission method;loading;fine-grained composite;modulus of elasticity

Key words in English

Acoustic emission method;loading;fine-grained composite;modulus of elasticity

Authors

KOCÁB, D.; TOPOLÁŘ, L.; KUCHARCZYKOVÁ, B.; HALAMOVÁ, R.

RIV year

2019

Released

31.05.2019

Publisher

Elsevier

Location

GB

ISBN

1350-6307

Periodical

Engineering Failure Analysis

Volume

99

Number

2019

State

United Kingdom of Great Britain and Northern Ireland

Pages from

18

Pages to

25

Pages count

8

URL

https://www.sciencedirect.com/science/article/pii/S1350630718314201?via%3Dihub

BibTex

@article{BUT155538,
  author="Dalibor {Kocáb} and Libor {Topolář} and Barbara {Kucharczyková} and Romana {Halamová}",
  title="The analysis of acoustic emission signals detected during the loading of cement-based materials",
  journal="Engineering Failure Analysis",
  year="2019",
  volume="99",
  number="2019",
  pages="18--25",
  doi="10.1016/j.engfailanal.2019.01.002",
  issn="1350-6307",
  url="https://www.sciencedirect.com/science/article/pii/S1350630718314201?via%3Dihub"
}