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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F44994575%3A_____%2F21%3AN0000123" target="_blank" >RIV/44994575:_____/21:N0000123 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216305:26110/21:PU143516

Výsledek na webu

<a href="https://www.ndt.net/search/docs.php3?id=26457" target="_blank" >https://www.ndt.net/search/docs.php3?id=26457</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

Paper in the Proceedings of the International Conference NDT in Progress, 4.-5.10.2021 Prague: Czech Society for Non-Destructive Testing, 10 pages 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: pre-stressing steel strands, electrochemical corrosion, cracking, nonlinear ultrasonic testing, metal magnetic memory method. The conference proceedings have been requested for inclusion in the SCOPUS database.

Název v anglickém jazyce

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

Popis výsledku anglicky

Paper in the Proceedings of the International Conference NDT in Progress, 4.-5.10.2021 Prague: Czech Society for Non-Destructive Testing, 10 pages 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: pre-stressing steel strands, electrochemical corrosion, cracking, nonlinear ultrasonic testing, metal magnetic memory method. The conference proceedings have been requested for inclusion in the SCOPUS database.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/CK01000108" target="_blank" >CK01000108: Nové přístupy při diagnostice stavu výztuže předpjatých mostních nosníků</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

11th International Workshop NDT in Progress

ISBN

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ISSN

1435-4934

e-ISSN

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Počet stran výsledku

10

Strana od-do

1-10

Název nakladatele

Brno University of Technology and Czech Society For Nondestructive Testing

Místo vydání

Brno

Místo konání akce

Prague

Datum konání akce

4. 10. 2021

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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