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 -

Phoenix Inspection Systems Limited
Design and manufacture ultrasonic Transducers, Scanners and Custom Solutions for NDT inspections. Innovators in NDT technology
352 views
Technical Discussions
Anonymous
Anonymous
01:10 Nov-19-2001
Near Field

When calculating the "Near Field" for an angle beam search unit, do you have to calculate the "Near Field" in the wedge and then the material, or do you ignore the wedge?


    
 
 Reply 
 
David Hermanutz
Consultant,
Hbndt.com, China, Joined Jul 2012, 85

David Hermanutz

Consultant,
Hbndt.com,
China,
Joined Jul 2012
85
07:09 Dec-12-2001
Re: Near Field
: When calculating the "Near Field" for an angle beam search unit, do you have to calculate the "Near Field" in the wedge and then the material, or do you ignore the wedge?
.
Dear Anonymous.

The Near field should be calculated from the crystal through the wedge and then into the material.

If the crystal is rectangular you should also calculate for the x and y of the crsytal.

When doing the calculation in a field setting it may be acceptable ( check with your senior tech )to calculate just for the specimen material as this would give an error towards caution for sizing.

Best Regards,

David Hermanutz
Panametrics Melbourne





    
 
 Reply 
 

Product Spotlight

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
>

Robotic laser shearography enables 100% inspection of complex, flight-critical composite structures

An article in “Composites World Magazine” showcases Non Destructive Testing of aero-structures
...
with Laser Shearography. Over the years Dantec Dynamics has supplied many solutions for the aerospace industry. Referring to specific customer projects several of these cases are examined to outline the advantages of using Laser Shearography for automated defect detection.
>

Teletest Focus+

Teletest Focus+ electronics have superior capabilities than rivals on the market. Beyond the usual
...
test features, Focus+ has 24 transmit channels and 24 receive channels, with an additional on-board switching capabilities. The instrument's frequency range is 10–300 kHz.
>

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.
>

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