Eddy Current Test Acceptance
Eddy Current Test Acceptance
(OP)
Hello All, I need to specify eddy current testing on SA-249-304 tubing. I planned to specify E-213, but it apparently contains no acceptance criteria.
Is it necessary to specify acceptance criteria, and if so, what might be customarily used?
Does one of the other eddy current practices contain acceptance criteria, that I may use instead of E-213?
Thanks in advance,
Mike
Is it necessary to specify acceptance criteria, and if so, what might be customarily used?
Does one of the other eddy current practices contain acceptance criteria, that I may use instead of E-213?
Thanks in advance,
Mike
RE: Eddy Current Test Acceptance
The E specs are just methods.
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RE: Eddy Current Test Acceptance
Regards and thanks again,
Mike
RE: Eddy Current Test Acceptance
Also E309 is commonly used as an eddy test method, with either of the following defects as the referenced standard:
1-A transverse notch up to 12.5% of wall
2-A drilled hole (up to 3 holes)
3-A longitudinal notch up to 12.5% of wall.
-Tom
RE: Eddy Current Test Acceptance
I also use holes rather than notches because it is easy to verify the size of the holes (I own some small pin gages). Notches have to EDM machined and the replicated to get measurements.
You don't need to specify an ET E spec. If you look at A249 it calls out A1016. And A1016 lists E309 and E426 as test methods.
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Rust never sleeps
Neither should your protection
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RE: Eddy Current Test Acceptance
i am getting some conflicting information, spec e 309 says what it says about notches in the tubing and holes. i have been told by the eddy current maching manufacturer that if i have a second channel (absolute) on the machine i will have to mill a notch thru the tubing, e 309 says the notch is to be a percentage of the wall thickness...?? so which one is it?
Thank you, yes a269,a270 tubing
RE: Eddy Current Test Acceptance
If you are going to run bot differential and absolute, you need to decide what you are looking for with the absolute channel. The tubing spec will tell you what to use for ref std in the diff test.
There are a number of ways to use the absolute channel, though I have always like using two differential channels at different frequencies in order to get a better picture of the indication types.
= = = = = = = = = = = = = = = = = = = =
Rust never sleeps
Neither should your protection
http://www.trent-tube.com/contact/Tech_Assist.cfm
RE: Eddy Current Test Acceptance
thanks again. per spec e309, the testing should be for wall thickness only. (correct me if i am wrong) so with the absolute test i would be looking for thin wall conditions.
so can i look for this condition with a thru notch or do i need a milled notch not all the way thru the tubing..??
RE: Eddy Current Test Acceptance
Mike
RE: Eddy Current Test Acceptance
You must be hard up for some good reading; that's all I have to add.
rmw
RE: Eddy Current Test Acceptance
RE: Eddy Current Test Acceptance
rmw
RE: Eddy Current Test Acceptance
Be assured I did. BTW, I didn't mean to imply I read the WHOLE THING at one sitting, just what I needed:)
RE: Eddy Current Test Acceptance
does your company do its own mechanical tests on the tubing?
if so did you get these tests or procedures certified by someone?
thanx again for all your help