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 -

YXLON Copenhagen
YXLON Copenhagen is a highly specialized, award winning Danish company with 60 years of experience in portable X-ray solutions for industrial NDT.

824 views
Technical Discussions
Sunny
Sunny
05:51 Jul-13-2006
Round bar immersion Inspection

Could anyone explain what is the best way these days to to immersion testing on round bars as there are different scan patterns like one is helical and another is bar rotates and transducer is ondexes in linear direction. Which is good? and what really is helical scan?

Thanks


    
 
 
Fred Beck / Tac Tecnical instrument corp.
Fred Beck / Tac Tecnical instrument corp.
01:24 Jul-13-2006
Re: Round bar immersion Inspection
----------- Start Original Message -----------
: Could anyone explain what is the best way these days to to immersion testing on round bars as there are different scan patterns like one is helical and another is bar rotates and transducer is ondexes in linear direction. Which is good? and what really is helical scan?
: Thanks

Tactic has been manufacturing tube and bar inspection systems since 1962. We have several publications which explan the various aspects of different bar inspection methods. please email me your mailing address and I will be glad to send them to you.

Fred Beck
------------ End Original Message ------------




    
 
 
Joe Buckley
Consultant, ASNT L-III, Honorary Secretary of BINDT
Level X NDT, BINDT, United Kingdom, Joined Oct 1999, 520

Joe Buckley

Consultant, ASNT L-III, Honorary Secretary of BINDT
Level X NDT, BINDT,
United Kingdom,
Joined Oct 1999
520
01:42 Jul-13-2006
Re: Round bar immersion Inspection
There are three approaches to creating a helical scan. (which just means that the probe covers the bar in a helical pattern, i.e. like a screw thread)

The Bar is on a skewed conveyer system with a fixed probe assembly. I.e. the bar rotates and moves forward evenly.
This works well for large tubes, (up to maybe 200mm diameter, maybe 10-20 m long) as part of an in-line conveyor system. The conveyor needs to be well set up and large, but, being fixed, the ultrasonic set up, is relatively simple to arrange.

second method is to have a rotating test head, through which the bar is moved. The test head is expensive, and setup is critical, but it can be fast
and very effective. It is the only way to test continuous product, i.e. coiled rod or wire.

Lastly you can rotate the bar and scan the probe along. This is most typically used for small bars, in an immersion tank. Typically there is much less vibration, so it works well for small critcal parts, which need to be tested to a high sensitivity. It is normally used for small batches, rather than high volume production.

Which of these works best depends on many factors, there is no one best way.

Joe


----------- Start Original Message -----------
: Could anyone explain what is the best way these days to to immersion testing on round bars as there are different scan patterns like one is helical and another is bar rotates and transducer is ondexes in linear direction. Which is good? and what really is helical scan?
: Thanks
------------ End Original Message ------------




    
 
 

Product Spotlight

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.
>

AMIGO2

TSC Amigo2 - ACFM technology has developed a solid reputation for accurately detecting and sizing
...
surface-breaking cracks through paint and coatings. As the industry demands increased performance in speed, signal quality, and portability, it’s time for an evolution. It’s time for Amigo2.
>

Research and Applications Development For NDT

The Research and Applications Development (RAD) group is a newly formed team within Acuren dedicat
...
ed to tackling challenging inspection problems. Our focus is the development of novel, field deployable, advanced inspection techniques for use in cases where standard NDT methods are ineffective. We don't wait for new innovations, we engineer them. From concept to commissioning.
>

Compact NDT inspection-heads for measurements with active thermography

The compact inspection head is suitable for thermographic ndt tasks. The uncooled infrared camera
...
is specially developed for NDI-tasks and offers a thermal sensitivity until now known only from thermal imagers with cooled detector. All required components and functions are integrated into the inspection-head. You will only need an ethernet cable to connect the sensor with the evaluation system.
>

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