Publication detail

Theoretical Analysis of Mechanical Load Induced Micro-crack Generation in Concruction Materials

ŠTEFKOVÁ, M. KOKTAVÝ, P.

Original Title

Theoretical Analysis of Mechanical Load Induced Micro-crack Generation in Concruction Materials

Type

conference paper

Language

English

Original Abstract

If a solid is loaded by a kind of mechanical stress (compression, tensile stress, bending, mechanical shocks, shearing, notching, material fibre breakage etc.), cracks are generated in it which in turn results in a non-uniform distribution of the electric charge over the crack walls, which are getting charged by opposite sign charges. In consequence of the charge oscillatory motion corresponding to the acoustic emission (AE) taking place simultaneously with the crack generation, a time-varying electric dipole is formed. In this way, the cracks make up the source of an electromagnetic field, which can be detected in both the material neighbourhood and, in some cases, a remote region.

Key words in English

Micro-crack, mechanical stress, electromagnetic emission, acoustic emission

Authors

ŠTEFKOVÁ, M.; KOKTAVÝ, P.

RIV year

2005

Released

1. 1. 2005

Publisher

České vysoké učení technické v Brně

Location

Praha

ISBN

80-01-03290-6

Book

Proocedings of International Workshop Physical and Material Engineering 2005

Pages from

205

Pages to

209

Pages count

5

BibTex

@inproceedings{BUT15282,
  author="Markéta {Štefková} and Pavel {Koktavý}",
  title="Theoretical Analysis of Mechanical Load Induced Micro-crack Generation in Concruction Materials",
  booktitle="Proocedings of International Workshop Physical and Material Engineering 2005",
  year="2005",
  pages="5",
  publisher="České vysoké učení technické v Brně",
  address="Praha",
  isbn="80-01-03290-6"
}