where expertise comes together - since 1996 -

The Largest Open Access Portal of Nondestructive Testing (NDT)

Conference Proceedings, Articles, News, Exhibition, Forum, Network and more

where expertise comes together
- since 1996 -
878 views
Technical Discussions
AMIRI
Consultant, NDT/QC/WELD INSPECTION
Iran, Joined Nov 2005, 20

AMIRI

Consultant, NDT/QC/WELD INSPECTION
Iran,
Joined Nov 2005
20
06:20 Jul-02-2007
Temperature Effect on UT

Dear Friends,
What is effects of high temperature on sound velocity in matrials .for example in thickness measuring of c.steels on 500 oC what is the changing of actual thickness which detected by UT?
Regards


 
 Reply 
 
Tom Nelligan
Engineering,
retired, USA, Joined Nov 1998, 390

Tom Nelligan

Engineering,
retired,
USA,
Joined Nov 1998
390
06:41 Jul-02-2007
Re: Temperature Effect on UT
Sound velocity in all engineering materials decreases with temperature. In common steel alloys, the velocity decreases approximately 1% per 55 degrees Celcius. Thus, if you do not compensate for this change, your thickness readings at elevated temperature will be too high.

We have an application note on the subject of high temperature testing that you may find useful. Please see the link below.



 
 Reply 
 
chris s
Consultant, qc manager
USA, Joined Apr 2007, 9

chris s

Consultant, qc manager
USA,
Joined Apr 2007
9
08:10 Jul-02-2007
Re: Temperature Effect on UT
----------- Start Original Message -----------
: Dear Friends,
: What is effects of high temperature on sound velocity in matrials .for example in thickness measuring of c.steels on 500 oC what is the changing of actual thickness which detected by UT?
: Regards
------------ End Original Message ------------

you can elevate the temperature of your calibration block to 500oC and UT thickness readings will be accurate



 
 Reply 
 

Product Spotlight

NDT Master Lecturer

In the program both university professors and practitioners will give lectures, which guarantees the
...
oretical depth and practical inside. Academic Director: Prof. Dr. Christian Boller
The following lecturers are not complete: Prof. Tadeusz Stepinski, Prof. Wieslaw Staszewski, Prof. Frank Walther, Prof. Giovanni Bruno, Prof. Gerd Dobmann, Prof. Philippe Guy
>

NDT.net launches mobile-friendly design

NDT.net has revamped its website providing a mobile-friendly design.The front page received a comp
...
letely new design and all other sections are now reacting responsively on mobile devices. This has been a major step to make our website more user- friendly.
>

GEKKO - Portable Phased Array Testing with TFM in Real-Time

The portable phased array testing system GEKKO provides 64 parallel test channels. On creating testi
...
ng parameters the operator is assisted by the CIVA software. Due to its modular set-up the GEKKO instrument is suitable for operators of all skill levels.
>

FAAST-PA! OEM Patented phased Array for high speed UT inspection

Multiangle, Multifocus, Multifrequency, Multibeam. Instead of stacking UT electronics and having m
...
any PA probes, FAAST-PA is able to transmit all delay laws within ONE single shot in Real time.
>

Share...
We use technical and analytics cookies to ensure that we will give you the best experience of our website - More Info
Accept
top
this is debug window