Publication result detail

Cracks Creation model Based on Electric Charges Redistribution

KOKTAVÝ, P.

Original Title

Cracks Creation model Based on Electric Charges Redistribution

English Title

Cracks Creation model Based on Electric Charges Redistribution

Type

Paper in proceedings (conference paper)

Original Abstract

During the process of the crack generation the electric charges appear on cracks walls. They create the electric dipole system, which is a source of voltage induced on metal electrodes. Using Shockley-Ramo theorem, the differential equation for induced voltage is derived. The recorded electric signal is superposition of crack walls "self" vibration given by crack length and vibration due to an ultrasonic wave given by sample dimensions. The simultaneous investigation of acoustic and electromagnetic emission signals enable us to localize the crack position in solid and its dimension.

English abstract

During the process of the crack generation the electric charges appear on cracks walls. They create the electric dipole system, which is a source of voltage induced on metal electrodes. Using Shockley-Ramo theorem, the differential equation for induced voltage is derived. The recorded electric signal is superposition of crack walls "self" vibration given by crack length and vibration due to an ultrasonic wave given by sample dimensions. The simultaneous investigation of acoustic and electromagnetic emission signals enable us to localize the crack position in solid and its dimension.

Keywords

Crack, Electric Charge, Electromagnetic Emission, Acoustic Emission

Key words in English

Crack, Electric Charge, Electromagnetic Emission, Acoustic Emission

Authors

KOKTAVÝ, P.

RIV year

2011

Released

01.01.2002

Publisher

European Federation for Non-Destructive Testing

Location

Madrid

ISBN

84-699-8573-6

Book

8-th ECNDT

Pages from

231

Pages count

1

BibTex

@inproceedings{BUT5697,
  author="Pavel {Koktavý}",
  title="Cracks Creation model Based on Electric Charges Redistribution",
  booktitle="8-th ECNDT",
  year="2002",
  number="1.",
  pages="1",
  publisher="European Federation for Non-Destructive Testing",
  address="Madrid",
  isbn="84-699-8573-6"
}