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Publication detail
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" }