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 -

474 views
Technical Discussions
hemachandra
hemachandra
04:43 Dec-15-2008
mode conversion

Dear all ,
1)why cant we use angled longitudinal beam for inspection as it has higehr velocity? can we able to produce angled longitudinal beam?
2) in TOFD we use angled Longitudianl beam? so i think we can get angled longitudinal beam.
3)mode conversion start in material or wedge?????????


    
 
 
Ed Ginzel
R & D, -
Materials Research Institute, Canada, Joined Nov 1998, 1246

Ed Ginzel

R & D, -
Materials Research Institute,
Canada,
Joined Nov 1998
1246
05:52 Dec-15-2008
Re: mode conversion
Hemachandra
Angled compression mode is commonly used in ultrasonic applications...a great summary has been provided of the sort of applications it finds at http://www.ndt.net/article/pow1297/schmid/schmid.htm

By mode conversion we understand the change of a compression mode to a transverse mode or visa versa. These events occur as a result of boundary interactions of a wavefront.

An interesting exception to this assumption is the SH shear mode which does not mode convert to L mode!

Ed
----------- Start Original Message -----------
: Dear all ,
: 1)why cant we use angled longitudinal beam for inspection as it has higehr velocity? can we able to produce angled longitudinal beam?
: 2) in TOFD we use angled Longitudianl beam? so i think we can get angled longitudinal beam.
: 3)mode conversion start in material or wedge?????????
------------ End Original Message ------------




    
 
 

Product Spotlight

HD-CR 35 NDT Computed Radiography System

Portable high-resolution CR scanner for all radiography applications - weld testing, profile images
...
and aerospace. No matter what type of radiographic testing you are performing, the unique TreFoc Technology of the HD-CR 35 NDT imaging plate scanner always guarantees the highest image quality.
>

Aerospace Systems - Automated Ultrasonic Inspection

USL are specialists in the design and manufacture of turnkey ultrasonic inspection systems for aer
...
ospace applications. From monolithic composites to complex honeycomb structures. This video shows just a few examples of what is possible, find out more at: www.ultrasonic-sciences.co.uk
>

Semi-Automated Phased Array Immersion System for Small Composite Parts

Turn-key semi-automated system as an improved and affordable solution for inspection of small comp
...
osite parts. Includes support table, immersion tank, scanner, PA instrument, PC, Analysis software, database, wedge management and other options.
>

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.
>

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