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 -

1205 views
Technical Discussions
Philippe Rubbers
Engineering
SCM, South Africa, Joined Nov 1998, 21

Philippe Rubbers

Engineering
SCM,
South Africa,
Joined Nov 1998
21
08:28 Aug-11-1999
UT inspections of large castings and austenitic steel

What techniques are available to inspect (volumetric) coarse grain
material,such as castings and austenitic steels, with a thick cross
section? Examples where this material would be used is in the
primary loop of nuclear power stations, and in pipe work in the
petrochemical industry.

Thanks


    
 
 
jayesh.vanza
jayesh.vanza
07:53 Aug-11-1999
Re: UT inspections of large castings and austenitic steel
: What techniques are available to inspect (volumetric) coarse grain
: material,such as castings and austenitic steels, with a thick cross
: section? Examples where this material would be used is in the
: primary loop of nuclear power stations, and in pipe work in the
: petrochemical industry.

: Thanks




    
 
 
GAF
GAF
03:16 Aug-13-1999
Re: UT inspections of large castings and austenitic steel
: : What techniques are available to inspect (volumetric) coarse grain
: : material,such as castings and austenitic steels, with a thick cross
: : section? Examples where this material would be used is in the
: : primary loop of nuclear power stations, and in pipe work in the
: : petrochemical industry.

: : Thanks

Depends on the material and what type of inspection but in general Ultrasonic inspection of CSS components has been unreliable. Your best bet is a low freqency focused dual L wave 3/4 or 1 meg for crack detection



    
 
 
Norm Woodward
Norm Woodward
08:42 Aug-13-1999
Re: UT inspections of large castings and austenitic steel
: What techniques are available to inspect (volumetric) coarse grain
: material,such as castings and austenitic steels, with a thick cross
: section? Examples where this material would be used is in the
: primary loop of nuclear power stations, and in pipe work in the
: petrochemical industry.

I have no first hand experience with them, but Krautkramer, and a few others, were pushing "composite transducers" as a solution to inspecting noisy materials.

As I recall, this site had some on-line articles about them back in the fall of '96.

Hope this helps,

Norm


    
 
 
Russ Minkwitz
Russ Minkwitz
09:59 Aug-13-1999
Re: UT inspections of large castings and austenitic steel
: What techniques are available to inspect (volumetric) coarse grain
: material,such as castings and austenitic steels, with a thick cross
: section? Examples where this material would be used is in the
: primary loop of nuclear power stations, and in pipe work in the
: petrochemical industry.

Sir,

Dual element critically refracted longitudinal waves have been used for such applications for years. They are mentioned in IIW handbook on the examination of austenetic welds.

Further there are more detailed papers on dual element and tandem techniques published by RTD and Panametrics.

If you would like copies please provide you address and we will send more information.

Best Regards,
Russ Minkwitz
Manager, Transducer Sales





    
 
 
satish
satish
09:38 Oct-29-1999
Re: UT inspections of large castings and austenitic steel
: What techniques are available to inspect (volumetric) coarse grain
: material,such as castings and austenitic steels, with a thick cross
: section? Examples where this material would be used is in the
: primary loop of nuclear power stations, and in pipe work in the
: petrochemical industry.

: Thanks




    
 
 

Product Spotlight

Lyft™: Pulsed Eddy Current Reinvented

PEC Reinvented—CUI Programs Redefined Corrosion under insulation (CUI) is possibly the greatest u
...
nresolved asset integrity problem in the industry. Current methods for measuring wall thickness with liftoff, without removing insulation, all have severe limitations. Eddyfi introduces Lyft — a reinvented, high-performance pulsed eddy current (PEC) solution. The patent- pending system features a state-of-the-art portable instrument, real- time C-scan imaging, fast data acquisition with grid-mapping and dynamic scanning modes, and flexibility with long cables. It can also scan through thick metal and insulation, as well as aluminum, stainless steel, and galvanized steel weather jackets. Who else but Eddyfi to reinvent an eddy current technique and redefine CUI programs. Got Lyft?
>

Conformable wedge transducer

The conformability is obtained with a flexible membrane filled with water between the transducer and
...
the inspected component. The coupling between the membrane and the component requires a small quantity of water or couplant. The conformable wedge combines the acoustic performance of immersion technique with good coupling and low attenuation.
>

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.
>

Magnetic X-Ray Pipeline Crawler

Zhong Yi brand pipeline crawler is magnetic/micro-video controlled crawler with DC X ray unit inst
...
alled for checking welding of pipeline. Move steadily inside the pipeline 6''-60''diameter with speed of up to 18m/min, Max. moving diatance 5 kilometers and provide the efficient inspection of the pipeline.
>

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