Ultrasonic Thickness Measurement of Internal Oxide Scale
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F17%3AN0000148" target="_blank" >RIV/26722445:_____/17:N0000148 - isvavai.cz</a>
Result on the web
<a href="http://susen2020.cz/en/nuclear-technologies-for-21st-century-international-conference-in-rez/" target="_blank" >http://susen2020.cz/en/nuclear-technologies-for-21st-century-international-conference-in-rez/</a>
DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Ultrasonic Thickness Measurement of Internal Oxide Scale
Original language description
The iron oxide scale (magnetite) grows on the inside and outside tube surfaces. Their presence on the inside surface of the boiler steam tubes is a serious problem. The scales act as a thermal insulator on the water side and reducing the heat transfer through the tube wall. The tube wall is chronic overheated and it can accelerate metallurgical failure. Ultrasonic pulse/echo thickness measurement techniques are used for internal oxide scale measurement. This measurement is performed by ultrasonic technique using high frequency (20MHz) broadband probe with single-element transducers and shear waves. Thickness of the inner scale is calculated from distance between relevant echoes, i.e. proper reflections from the metal-oxide interface and the oxide-air interface. Measured thicknesses are in range from 20 mm up to millimeters. Correct setting of ultrasonic device in a laboratory was verified during in-site measurement and by destructive check of the scale thickness by metallography.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20501 - Materials engineering
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Nuclear Technologies for the 21st Centruy, September 13th 2017
ISBN
978-80-270-3233-4
ISSN
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e-ISSN
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Number of pages
7
Pages from-to
69-75
Publisher name
Centrum výzkumu Řež, s.r.o
Place of publication
Řež
Event location
Řež
Event date
Sep 13, 2017
Type of event by nationality
CST - Celostátní akce
UT code for WoS article
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