Crack detection and monitoring of their growth in critical parts of steam pipeline by electric potential drop method

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F25%3AN0000032" target="_blank" >RIV/26722445:_____/25:N0000032 - isvavai.cz</a>
Result on the web
<a href="https://journalmt.com/artkey/mft-202504-0001_crack-detection-and-monitoring-of-their-growth-in-critical-parts-of-steam-pipeline-by-electric-potential-drop-m.php" target="_blank" >https://journalmt.com/artkey/mft-202504-0001_crack-detection-and-monitoring-of-their-growth-in-critical-parts-of-steam-pipeline-by-electric-potential-drop-m.php</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.21062/mft.2025.046" target="_blank" >10.21062/mft.2025.046</a>

Result language
angličtina
Original language name
Crack detection and monitoring of their growth in critical parts of steam pipeline by electric potential drop method
Original language description
An innovative way of using DCPD (Direct Current Potential Drop) method for off-line and online monitoring of critical parts of energy equipment in operation is presented. There are only a few NDT methods that allow detection and monitoring of defect growth in components at high temperatures and pressures. Monitoring of steam pipes and critical pipeline components in operation has been carried out for several years with different results. a relatively new way of using the DCPD method outside the laboratory is described. The carried-out tests were intended to resemble operational loads as much as possible. Therefore, the tests were performed at a temperature of 20 °C and at an increased temperature of 550 °C. By gradually deepening the groove (slot) simulating the crack type defect in predefined steps, the growth of the defect was simulated up to the full wall thickness of the test sample. The primary evaluation was carried out from the absolute and relative values of measured resistance. The disadvantage of these values is their dependence on the temperature of the monitored area of the test sample and on possibly interfering DC voltages.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20501 - Materials engineering

Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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