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 -
661 views
Technical Discussions
Charlie Jackson
Charlie Jackson
02:09 Mar-20-2006
UT Flaw detection in Monel and Hastelloy weldments

Interested to know of any UT Techniques for Monel or Hastelloy weldments which would give a reasonable POD for preferential ID corrosion loss to Weld or HAZ in piping.

Kind Regards Charlie


    
 
 Reply 
 
Frank
Frank
05:35 Mar-25-2006
Re: UT Flaw detection in Monel and Hastelloy weldments
----------- Start Original Message -----------
: Interested to know of any UT Techniques for Monel or Hastelloy weldments which would give a reasonable POD for preferential ID corrosion loss to Weld or HAZ in piping.
: Kind Regards Charlie
------------ End Original Message ------------

Try using Refracted Longitudinal search units.


    
 
 Reply 
 
Jim Knowles
Jim Knowles
00:12 Mar-28-2006
Re: UT Flaw detection in Monel and Hastelloy weldments
----------- Start Original Message -----------
: : Interested to know of any UT Techniques for Monel or Hastelloy weldments which would give a reasonable POD for preferential ID corrosion loss to Weld or HAZ in piping.
: : Kind Regards Charlie
: Try using Refracted Longitudinal search units.
------------ End Original Message ------------


The corrosion of this type can be put into three categories,notch, U type or escarpment, two can be detected relatively easily by a 45 degree shear either 0.5 skip or multiple skip paying attention to the particular area of impingement or beam path length. The escarpment type of geometry is more difficult as it is shallow from the pipe side gradually getting deeper nearer the weld or HAZ. Try using 4.0 MHz shear or if the material is partcularly noisy angled compression as Charlie recommends.



    
 
 Reply 
 
J. Mark Davis
Teacher, And Consultant
University of Ultrasonics, Birmingham, Alabama, USA, Joined Mar 2000, 85

J. Mark Davis

Teacher, And Consultant
University of Ultrasonics, Birmingham, Alabama,
USA,
Joined Mar 2000
85
04:21 Mar-28-2006
Re: UT Flaw detection in Monel and Hastelloy weldments
IS this just corrosion or is ID cracking a concern.

Refracted Longitudinal Waves may work and even ID Creeping Waves.

Phased Array UT is another consideration. Either a E Scan or a S-Scan could image the sorroded area.

Is there any weld crown restriction?

How thick is the Hastelloy and Monel material?

J. Mark Davis

----------- Start Original Message -----------
: : Interested to know of any UT Techniques for Monel or Hastelloy weldments which would give a reasonable POD for preferential ID corrosion loss to Weld or HAZ in piping.
: : Kind Regards Charlie
: Try using Refracted Longitudinal search units.
------------ End Original Message ------------




    
 
 Reply 
 

Product Spotlight

Navic - Steerable Modular Automated Scanner

The Navic is a modular, motorized, steerable scanner designed to carry multiple attachments used
...
in various scanning and inspection applications. The Navic is capable of weld scanning (girth welds and long seam welds), automated corrosion mapping, and tank scanning.
>

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.
>

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.
>

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.
>

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