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- since 1996 -

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Technical Discussions
David Harvey
David Harvey
03:22 Aug-02-1998
Instrument Calibration per MIL-STD-2154

My company is preparing to begin the use of MIL-STD-2154 for the testing of Titanium billets. To date, we have not used this specification, since our main product lines are in the nuclear industry. Our merger with OREMET has changed that, and now I must begin to learn about the UT of titanium.

As I read the instrument requirements for MIL-STD-2154, as given in Table II of that document, I am most confused by the "Sensitivity" and "Signal-to-noise" requirements. I am not clear as to just what is being specified based upon the values given in the spec and the procedure described by ASTM.

Is there anyone who can shed some light on the intended interpretation of these specifcation requirements.

Thank you very much for your assistance.

David Harvey
Oremet-Wah Chang


 
 Reply 
 
Rolf Diederichs
Director,
NDT.net, Germany, Joined Nov 1998, 617

Rolf Diederichs

Director,
NDT.net,
Germany,
Joined Nov 1998
617
08:50 Aug-04-1998
Re: Instrument Calibration per MIL-STD-2154
ne the ability to detect small
signals limited by the signal-to-noise ratio.

Signal-to-noise ratio:
Ratio of the amplitude of an ultrasonic echo arising from
the discontinuity in a material to the amplitude of the
average background noise signal (grass).

You may also try to find something in NDTnet 1998 May, Vol.3 No.5
http://www.ndt.net/v03n05.htm
This issue focuses on techniques of Ultrasonic Flaw Detectors.

You may check for instance:
http://www.ndt.net/article/0598/linas_eq/linas_eq.htm
The Hardware Concept of a new Digital Ultrasonic NDE System
L.Svilainis and V.Puodziunas; Kaunas Lithuania

Your question may be still not answered complete enough.
Let us try to get some more answers from experts of this forum.

Rolf Diederichs




 
 Reply 
 
RAJESH TRIVEDI
RAJESH TRIVEDI
01:19 May-18-2001
MIL-STD FOR NDT
DEAR SIR,
I WOULD LIKE TO INTRODUCE MY SELF AS A NDT INSPECTOR.PRESENTLY WORKING ON B37-200 AIRCRAFT OPEARATED BY BLUE DART AVAITION LTD.CHENNAI,INDIA.
I WOULD LIKE TO HAVE MIL-STD FOR NDT METHODS.
KINDLY LET ME KNOW WHERE IT'S MADE AVAILABLE TO YOUOR IS THERE NAY WEBSITE WHERE I CAN GET ALL THE
DOCUMENTS.KINDLY INFORM ME AT YR ERLIEST.
THANKING YOU
RAJESH



 
 Reply 
 
Richard Freemantle
NDT Inspector, Consultant, R&D
Wavelength NDT Limited, United Kingdom, Joined Nov 1998, 16

Richard Freemantle

NDT Inspector, Consultant, R&D
Wavelength NDT Limited,
United Kingdom,
Joined Nov 1998
16
09:01 May-18-2001
Re: MIL-STD FOR NDT
Dear Rajesh

I got a pdf copy of MIL-STD 5124 from the following website. The site has a free search and download facility.

http://astimage.daps.dla.mil

These other sites might be of use, but as far as I know they do not have any document download.

BS/EN search http://www.bsi-global.com
DIN search http://www2.beuth.de
ASTM search http://www.astm.org
ANSI online http://webstore.ansi.org/ansidocstore
ISO search http://www.iso.ch
NSSN global standards search http://www.nssn.org
SAE http://www.sae.org

Regards,

Richard Freemantle

Dr. R.J. Freemantle - Managing Director

NDT Solutions Ltd
Suite 3.2
Keele University Science Park
Keele
Staffordshire
ST5 5SP
UK

Tel +44 (0)1782 584306
Fax +44 (0)1782 711093

Email r.j.freemantle@ndtsolutions.com
http://www.ndtsolutions.com


: DEAR SIR,
: I WOULD LIKE TO INTRODUCE MY SELF AS A NDT INSPECTOR.PRESENTLY WORKING ON B37-200 AIRCRAFT OPEARATED BY BLUE DART AVAITION LTD.CHENNAI,INDIA.
: I WOULD LIKE TO HAVE MIL-STD FOR NDT METHODS.
: KINDLY LET ME KNOW WHERE IT'S MADE AVAILABLE TO YOUOR IS THERE NAY WEBSITE WHERE I CAN GET ALL THE
: DOCUMENTS.KINDLY INFORM ME AT YR ERLIEST.
: THANKING YOU
: RAJESH
.



 
 Reply 
 

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