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549 views
01:31 Mar-15-2006
David Harvey
EMAT in High temp Zr

I am interested in measuring the thickness, up to about 1", in hot zirconium (up to 400C). Is this possible?


 
08:05 Mar-16-2006

Mark Potter

R & D
Sonemat Ltd.,
United Kingdom,
Joined Sep 2007
7
Re: EMAT in High temp Zr I have not heard of anyone using an EMAT on Zirconium; I dont think it is conductive enough. I could be wrong though ... anyone else heard of EMATs in this application?

(The temperature is probably less of an issue)

Depending on its attenuation you could use a laser-laser system, but that will cost lots of monies.

Mark.




 
09:16 Mar-17-2006
Jaromir Amadeus Masa, PhD
Re: EMAT in High temp Zr I shall try to find something more in the literature.
About UT I read

Zirkon und Hafnium für die Kerntechnik Interesse gefunden. Sie werden bereits bei der Herstellung von Gussblock an geprüft. Zirkonblöcke mit 0,3 m Durchmesser und über 1 m Länge prüft man an der mechanisch bearbeiteten Oberfläche von Hand bei 1 MHz, am besten mit SE-Prüfköpfen, um auch Fehler nahe der Oberfläche zu finden von Hand bei 1 MHz [siehe Fink, E. W.; Ultrasonic testing as a Method of determining variables in processing Zircalloy and Hafnium. Symposium NDT of the nuclear Energy, ASTM spec. Tech. Publ. No. 223 [1958] 175-179; und Wood, F. J.; Borg, J. O.; Ultrasonic inspection of arc-èást zirconium and its alloys. US Bureau of Mines, Rep. of Investigation 5126, March 1955.
Krautkrämer, Krautkrämer, Werkstoffprüfung mit Ultraschall, Springer Berlin 1986 (5. Auflage), S.556

Jaromir Amadeus Máša, PhD
Starmans Electronics Ltd, Prague


----------- Start Original Message -----------
: I am interested in measuring the thickness, up to about 1", in hot zirconium (up to 400C). Is this possible?
------------ End Original Message ------------




 
05:52 Mar-18-2006
Changqing Lee
Re: EMAT in High temp Zr Hi, David,

Why dont you try with Radiographic method?

Even though I dont have experience with Zircoium, it seems to be an easy task for radiographic thickness gauge.

By the way, I checked the electrical conductivity of zirconium, 4~5% IACS at room temp.

----------- Start Original Message -----------
: I am interested in measuring the thickness, up to about 1", in hot zirconium (up to 400C). Is this possible?
------------ End Original Message ------------




 


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