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 -

1091 views
Technical Discussions
Jack Tensen
Jack Tensen
17:07 Apr-14-2009
Surface waves on hot steel plates

Dear readers,

I am looking for a way to use surface Rayleigh waves on hot steel plates (150-180 degr. C.)
I am thinking on coupling the sound in the plate by means of a squirter and a high water flow.
The probe is positioned about 3-4 cm above the plate and water flows through the squirter over the plate. Iam not sure this will work specially for the Rayleigh waves travelling over the steel/water boundary?
Has anyone experience with this or other suggestions? please I like to know

 
 Reply 
 
Borja
Director
Innerspec Technologies, USA, Joined Jun 2002, 36

Borja

Director
Innerspec Technologies,
USA,
Joined Jun 2002
36
20:40 Apr-14-2009
Re: Surface waves on hot steel plates
In Reply to Jack Tensen at 17:07 Apr-14-2009 (Opening).

EMAT is a very good option for generating ultrasound on hot materials, and it is especially well suited for generation of guided waves (including surface waves). You can visit www.innerspec.com for additional information.

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

Tom Nelligan

Engineering,
retired,
USA,
Joined Nov 1998
390
20:53 Apr-14-2009
Re: Surface waves on hot steel plates
In Reply to Jack Tensen at 17:07 Apr-14-2009 (Opening).

I have never tried the test at high temperature, but at normal environmental temperatures the water on the surface of the metal can be an issue. An incident longitudinal wave in a water column at the correct angle will generate a Rayleigh wave in steel, but the Rayleigh wave will be very quickly dampened by the water on the surface, and not travel very far before dissipating. That may be a problem depending on the specific sensitivity and sound path length requirements of your test.

 
 Reply 
 

Product Spotlight

UCI Hardness Tester NOVOTEST T-U2

UCI hardness tester NOVOTEST T-U2 is is used for non-destructive hardness testing of: metals and
...
alloys by scales of hardness: Rockwell (HRC), Brinell (HB), Vickers (HV); non-ferrous metals, alloys of iron etc., and using five additional scales for calibration; with tensile strength (Rm) scale determines the tensile strength of carbon steel pearlitic products by automatic recalculation from Brinell (HB) hardness scale.
>

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.
>

32:128PR PAUT & 2-ch TOFD Flaw Detector: SyncScan 2

●32:128PR PAUT with optional 2-ch TOFD to maximize your efficiency ●Support PR mode for corrosi
...
on inspection ●Multiple solutions for welds & corrosion ●Faster scan speed (Approximately 3 meters/minute) ●Light weight: 4kg only including battery
>

Research and Application Development For NDT

Acuren’s Research and Application Development specializes in the development of advanced ultraso
...
nic inspection techniques and systems for challenging inspection applications, with an emphasis on practical solutions which are field deployable. Services include manual and automated ultrasonic inspection system development, inspection technique optimization using laboratory scale studies and ultrasonic modeling (CIVA, BeamTool), preparing technical justification for technique evaluation and qualification (Probability of Detection and sizing accuracy studies), inspection/calibration/analysis procedure preparation to support field deployment of custom techniques, and development of custom imaging algorithms to support challenging inspection applications.
>

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