Publication detail

Experimental study of mechanical load induced micro-crack generation in granite

ŠTEFKOVÁ, M.

Original Title

Experimental study of mechanical load induced micro-crack generation in granite

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

granite, electromagnetic emission, acoustic emission

Authors

ŠTEFKOVÁ, M.

RIV year

2005

Released

1. 9. 2005

Publisher

Czech Technical University in Prage

Location

Praha

ISBN

80-01-03290-6

Book

Physical and material engineering 2005

Pages from

200

Pages to

204

Pages count

5

BibTex

@inproceedings{BUT21291,
  author="Markéta {Štefková}",
  title="Experimental study of mechanical load induced micro-crack generation in granite",
  booktitle="Physical and material engineering 2005",
  year="2005",
  pages="5",
  publisher="Czech Technical University in Prage",
  address="Praha",
  isbn="80-01-03290-6"
}