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 -

EXTENDE
EXTENDE, optimize your NDT inspections projects thanks to simulation.

829 views
Technical Discussions
Saju
Saju
11:36 Dec-08-2009
Mode conversion of shear waves in immersion testing

Hi All

I read in immersion testing of tubulars we use longitudinal waves to generate shear waves in the test part either by offsetting the probe or angulating it. But when a defect is encountered in the test part , how does the reflected shear waves return to the probe? Is there a mode conversion happens at the test part / water interface to produce longitudial waves , since the shear wave can't pass through liquids?

    
 
 
Joe Buckley
Consultant, ASNT L-III, Honorary Secretary of BINDT
Level X NDT, BINDT, United Kingdom, Joined Oct 1999, 517

Joe Buckley

Consultant, ASNT L-III, Honorary Secretary of BINDT
Level X NDT, BINDT,
United Kingdom,
Joined Oct 1999
517
13:04 Dec-08-2009
Re: Mode conversion of shear waves in immersion testing
In Reply to Saju at 11:36 Dec-08-2009 (Opening).

Yes exactly, it goes back the way it came, From water to steel you get a mode conversion to Shear, The from steel to water you get the opposite. Obviously some of the energy is lost at each interface.

    
 
 

Product Spotlight

Wireless TOFD scanner

Quick, accurate and highly reproducible welds testing. The System operates wirelessly and is compat
...
ible with any type of Windows based Laptop, Desktop or Tablet.
>

FD800 Bench Top Flaw Detectors

The bench-top FD800 flaw detector range combines state-of-the-art flaw detection with advanced mater
...
ial thickness capabilities. Designed for use in the laboratory these gauges are the tool you need for all your flaw detecting needs.
>

TVC awarded UKAS accreditation

TVC are delighted to finally announce we have been awarded UKAS accreditation for our calibration
...
laboratory. Laboratory accreditation to ISO/IEC 17025:2005 enables us to conduct the Electrical Verification of Ultrasonic Flaw Detection Equipment to BS EN 12668-1:2010. It has taken many months of hard work and we want to thank our staff for all their efforts during this massive undertaking.
>

Webinar: FMC & Advanced Focusing Techniques for Improved Ultrasonic Inspections

Phased array ultrasound is now a commonly accepted inspection technology. Now there is excitement ar
...
ound new techniques in Phased Array: Full Matrix Capture (FMC) & Total Focusing Method (TFM). Our webinar on December 5 & 6 will illustrate how these techniques, implemented on a TOPAZ64 instrument, can improve the results of existing inspections. Register today.
>

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
s