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 -

349 views
Technical Discussions
john williams
john williams
00:32 Sep-10-2003
TOFD

In TOFD inspection, is defect detection likely in the area outwith the effective beam width up to the lateral wave. Also when calculating beam widths, what factor should be used i.e. 0.7,1.04 or 1.22?


    
 
 
Neil Burleigh
Sales
Krautkramer Australia Pty Ltd, Australia, Joined Dec 2002, 151

Neil Burleigh

Sales
Krautkramer Australia Pty Ltd,
Australia,
Joined Dec 2002
151
07:25 Sep-13-2003
Re: TOFD/ beam width
----------- Start Original Message -----------
: In TOFD inspection, is defect detection likely in the area outwith the effective beam width up to the lateral wave. Also when calculating beam widths, what factor should be used i.e. 0.7,1.04 or 1.22?
------------ End Original Message ------------
When choosing a factor for the determination of beam width of a sound beam you must first know what dimensional type of oscillator is being used ( rectangular or disc.) Secondly will you be operating in a pulse echo mode or through transmission (pitch and catch).
Finally what is the beam 'edge' that you want?
Do you want the 'infinite' edge then use the constant 1.22. Or would like to calculate the beam width with a 10% edge (20dB)?
Hope this hasn't muddied the waters too much.

Regards
Neil




    
 
 

Product Spotlight

Alpha Pro Digital Radiography System

The Alpha Pro digital X-ray system is the ideal system for your NDT \r\nneeds, as it offers amazin
...
g 16 bit images which enable the highest \r\nlevel of detection and identification of hairline cracks. While weighing only 3kg (6.6lbs), this panel has the largest imaging area: 35 X 43 cm (14X17 in).
>

MUSE Mobile Ultrasonic Equipment

The MUSE, a portable ultrasonic imaging system, was developed for in-field inspections of light-weig
...
ht structures. The MUSE consists of a motor-driven manipulator, a water circulation system for the acoustic coupling and a portable ultrasonic flaw detector (USPC 3010). The MUSE provides images of internal defects (A-, B-,C- and D-scan).
>

IRIS 9000Plus - Introducing the next generation of heat exchanger inspection.

Representing the seventh generation of the IRIS system, the IRIS 9000 Plus has nearly 200 years of c
...
ombined field inspection experience incorporated in its design. This experience combined with a strong commitment to quality and a history of innovation has made Iris Inspection Services® the undisputed leader in IRIS technology.
>

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.
>

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