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 -
1821 views
Technical Discussions
Vikram
NDT Inspector, - Phased Array Specialist
Mistras Group Inc., USA, Joined Jun 2009, 9

Vikram

NDT Inspector, - Phased Array Specialist
Mistras Group Inc.,
USA,
Joined Jun 2009
9
01:51 Jun-10-2009
Phased Array on Hastelloy/ Inconel

What could be the best approach to inspection Hastelloy with Phased Array. Do you think an L-wave inspection with phased array would be good or shear wave?

 
 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
13:53 Jun-10-2009
Re: Phased Array on Hastelloy/ Inconel
In Reply to Vikram at 01:51 Jun-10-2009 (Opening).

Vikram,

It all depends on the grain size. Shear waves may work as we demosntrated for the Yucca Mtn project with the Waste Packages. But, usually a refracted L-wave is best for penetraion through the weld metal.

If you can determine the grain size that would be very helpful with your decision of Shear versus L wave.

Or, you would want to build a weld test sample with known volumetric flaws as well as ID and OD defects or notches in the HAZ in order to verify detectability and penetration through the weld metal.

If this is a UT in lieu of RT, then your procedure qualification sample will dictate your performance demonstration process.

Davis NDE is currently conducting a Basic and an Advanced Phased Array Classes for Mistras in the Denver area. You may contact your people there to see about this using the PA methodlogy and speak with my instructor or contact me directly.

Of course you will need RL PA Wedges. If you are using the OmniScan, then contact Olympus to acquire the RL wedges.

Also, 5 Mhz worked great for the Hastalloy with Yucca Mountain Waste Packages, but you may need to consider a 2 Mhz or even a 1 or 1.5 Mhz. You do not mention thickness or diameter.

I hope this helps.

Sincerely,

J. Mark Davis

 
 Reply 
 
Vikram
NDT Inspector, - Phased Array Specialist
Mistras Group Inc., USA, Joined Jun 2009, 9

Vikram

NDT Inspector, - Phased Array Specialist
Mistras Group Inc.,
USA,
Joined Jun 2009
9
02:57 Jun-11-2009
Re: Phased Array on Hastelloy/ Inconel
In Reply to J. Mark Davis at 13:53 Jun-10-2009 .

Mark,

Thank you for the prompt reply. The work I am trying to target is 4" diameter, 0.250" pipe weld. Obviously, I will have to inspect on second leg and I will set up a linear raster scan with an 8 element aperture and hence be able to get some footprint on the scan. Sectorial will be setup as a second multigroup. I have asked the customer for a microstructure analysis on the material although the weld micro-structure might be different and hence the acoustic mismatch which might throw me off. The wedges will be curved. Let me know what you think.

Regards,

Vikram

 
 Reply 
 

Product Spotlight

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).
>

ISONIC 3510

Very Powerful Superior Performance Extremely Portable Smart Phased Array Ultrasonic Flaw Detector an
...
d Recorder with 2 Conventional UT and TOFD Channels uniquely combines PA, single- and multi-channel conventional UT, and TOFD modalities providing 100% raw data recording and imaging. Suitable for all kinds of every-day ultrasonic inspections
>

Eddy Current inspection : RotoETscan Rotating Head

The rotating head RotoETscan detects the presence of longitudinal surface or sub surface defects a
...
t high speed. The rotating head is often installed directly on the production line. It is generally dedicated to the control of long products such as tubes, bars and wires, made of ferrous or non-ferrous material. It can also be used for inspection of small parts (billets).
>

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.
>

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