Publication detail

Use of Non-destructive Techniques to Detect Damage Induced by Corrosion of Pre-stressing Steel Strands

MANYCHOVÁ, M., STRYK, J., FRÝBORT, A., KORENSKA, M., SVOBODA, V.

Original Title

Use of Non-destructive Techniques to Detect Damage Induced by Corrosion of Pre-stressing Steel Strands

Type

conference paper

Language

English

Original Abstract

The aim of this work is to provide confirmation of the possible use of two non-destructive techniques to detect damage of pre-stressing steel strands due to corrosion. For this purpose accelerated corrosion procedure has been conducted on these strands in laboratory conditions. Corrosion consequences were analyzed for various duration of accelerated corrosion process. The ultrasonic techniques and metal magnetic memory (MMM) method were used in this experimental study. The results show the application potential of ultrasonic techniques to analyze the effect of damage induced by accelerated corrosion on the nonlinear elastic behaviour of a steel strands. A new parameter, based on sensing of the magnetic field strength in the form of residual magnetization on the surface of the material, has been used in this study. Appraising parameters of measurement by the metal magnetic memory method were presented in the form of magnetogram – dependence of the magnetic field strength and field gradient on the measured distance. The changes of the magnetic field strength proved different stress concentration zones in the steel strands due to corrosion consequences. Subsequently, the differently corroded strands were subjected to tensile tests in order to determine their mechanical properties to verify and complement results of non-destructive tests.

Keywords

cracking, Electrochemical corrosion, pre-stressing steel strands, nonlinear ultrasonic testing, metal magnetic memory method

Authors

MANYCHOVÁ, M., STRYK, J., FRÝBORT, A., KORENSKA, M., SVOBODA, V.

Released

1. 12. 2021

Publisher

e-journal NDT.net

Location

Dresden, Germany

ISBN

1435-4934

Periodical

The e-Journal of Nondestructive Testing

Year of study

2021-12

Number

12

State

Federal Republic of Germany

Pages from

1

Pages to

10

Pages count

10

URL

https://www.ndt.net/search/docs.php3?id=26457

BibTex

@inproceedings{BUT176582,
  author="Monika {Manychová}",
  title="Use of Non-destructive Techniques to Detect Damage Induced by Corrosion of Pre-stressing Steel Strands",
  booktitle="NDT in Pogress",
  year="2021",
  journal="The e-Journal of Nondestructive Testing",
  volume="2021-12",
  number="12",
  pages="1--10",
  publisher="e-journal NDT.net",
  address="Dresden, Germany",
  issn="1435-4934",
  url="https://www.ndt.net/search/docs.php3?id=26457"
}

Documents

Článek_NDT.net.pdf