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 -

NOVO DR
develops and manufactures cutting edge Portable Digital Radiography X-ray Inspection Systems.
882 views
Technical Discussions
Shyamal Mondal
Shyamal Mondal
01:07 Feb-06-2001
Immersion Technique

Hello NDT experts,
I would like to do some immersion experiment in the turbulent
water of a tank. To find out, is there any change in
the signal due to violent distrubance of the water.
We have a 5MHz SonatestCD5-20 probe. Can I use it for this
experiment or do I need a different probe.
Any other informatin about this technique will be really
very helpful. Appreciate in advance.

Shyamal



 
 Reply 
 
Ron Mahler
Ron Mahler
08:17 Feb-07-2001
Re: Immersion Technique
Dear Shyamal,
In our immersion inspection system you can cahnge some of the parameters of the water system and generate different level of turbulent flow.
Please visit our web-site for the LS-200 and LS-25 immersion systems intend mainly for disc inspection of jet engines and others.
For these applications we use our new immersion probe-
ISP2-10 HR-3.
For more information please contact us.


: Hello NDT experts,
: I would like to do some immersion experiment in the turbulent
: water of a tank. To find out, is there any change in
: the signal due to violent distrubance of the water.
: We have a 5MHz SonatestCD5-20 probe. Can I use it for this
: experiment or do I need a different probe.
: Any other informatin about this technique will be really
: very helpful. Appreciate in advance.
.
: Shyamal
:
.



 
 Reply 
 
satish sharma
satish sharma
08:24 Feb-11-2001
How to prepare nanoparticle gels of ZnS/CdS/SeS
Hello
I would like know how to prepare the nanoparticle gels of ZnS/CdS/SeS? Kindly help me out.
Thanking you.



 
 Reply 
 
David Fryer
David Fryer
09:45 May-31-1998
Re: UT on PVC welds and bonded joints

: : We are looking for information on ultrasonic techniques
: : and equipment to inspect PVC pipe and plate joints.
: : Is there literature on this subject that is easily
: : available?
: : Three joining methods are used, butt-fusion,
: : epoxy bonding and PVC filler welding.
: : Testing is now just an air pressure test. Future
: : requirements will require better test methods.

: : Also, are there applicable acceptance codes for
: : UT inspection of these joints?

: : Thank you in advance.

: : S.B. Lee

: The following article is available on NDTnet:
: http://www.ndt.net/article/twi/twi.htm

: ULTRASONIC AND RADIOGRAPHIC NDT OF BUTT FUSION WELDS IN
: POLYETHYLENE PIPE
: Paper presented at Plastic Pipes IX Heriot-Watt University,
: Edinburgh, Scotland, UK,
: 18-21 September 1995
: by I.J. Munns and G.A. Georgiou TWI, Abington UK

: Abstract

: This paper summarises work at TWI on NDT of butt fusion welds in polyethylene
: and compares this work with results from other published
: literature on this topic. The major objectives of this study were to develop
: ultrasonic and radiographic testing procedures for the inspection of
: butt fusion welds in polyethylene pipe systems. The procedures were developed
: on pipes with diameters greater than 180mm and thicknesses
: greater than 12mm. The underlying techniques, however, can be used on testpieces
: other than pipes, and on a range of different polyethylene types and thicknesses.

: 4. Conclusions

: The main conclusions are based on the work undertaken at TWI on a range of
: polyethylene materials and pipes with diameters greater than
: 180mm and thicknesses greater than 12mm.

: - Ultrasonic creeping waves can be used to inspect the fusion area immediately
: beneath the outer weld bead in polyethylene pipes.
: - Ultrasonic tandem and TOFD techniques can be used to detect and image
: perpendicular planar flaws in butt fusion joints in polyethylenepipes.
: - Ultrasonic techniques are currently unable to detect nominally cold welds.
: - Radiographic intensities of between 16kV and 26kV are optimum when inspecting
: thicknesses of polyethylene pipe between 5mm and 50mm.
: - With radiography it is possible to infer the presence of a cold weld from
: local radiographic density measurements.
: - Polyethylene wire type IQIs have been proven to achieve radiographic
: sensitivities at least as good as polyethylene plaques and step
: wedges with holes, and have other practical handling advantages with regard
: to pipe inspection.




 
 Reply 
 
Jeffrey Phillips
Jeffrey Phillips
02:59 May-31-1998
Re: UT on PVC welds and bonded joints
David Fryer,
The following may be of interest to you, but is only applicable to Polyethylene pipe.
1. A search of the GRI database at www.gri.org using butt fusion gives several references, for reports related to butt fusion .

2. Krautkramer "Ultrasonic Testing of Materials" 4th edition, page 557 gives reference to a test specification IIW-V-627-78, although I do not know the current status of this document.

Regards,
Jeff Phillips
Email:jeffreyp@deakin.edu.au
WWW: http://www.deakin.edu.au/~jeffreyp



 
 Reply 
 
Mike Billingsley
Mike Billingsley
04:55 Nov-09-2000
Re: UT on PVC welds and bonded joints
: : We are looking for information on ultrasonic techniques for punching holes.
: : Is there literature on this subject that is easily
: : available?

We need to make a rectangular hole through a multihollow PVC extrusion, 8 walls. This is a blind hole the last two walls will not be cut. Normal punching methods will not work. Is ultrasonics used to vibrate a blade to cut deep holes.



 
 Reply 
 
satish sharma
satish sharma
09:42 Feb-27-2001
Re: Use of ADC card for ultrasonic measurements
: Hello
Thanks in advance. I want to make use of ADC card for the ultrasonic attenuation and ultrasonic velocity measurements. Kindly help me out with necessary PCI card and the software.
Thanking you.




 
 Reply 
 
subasahoo
subasahoo
02:00 Feb-03-2002
Re: How to prepare nanoparticle gels of ZnS/CdS/SeS
: Hello
: I would like know how to prepare the nanoparticle gels of ZnS/CdS/SeS? Kindly help me out.
: Thanking you.
.Is their any way preparing this through microemulsion
route



 
 Reply 
 

Product Spotlight

NEOS III

NEOS III is Logos Imagings lightest DR system. With a built-in battery and internal wireless commu
...
nication, the NEOS III is perfect for users that want to quickly assess an item.
>

NEW! The PragmaPro Instrument Platform

The PragmaPro is based on a modular cartridge technology and supports various NDT instrument modal
...
ities such as UT, PAUT, ECT and many more. This new platform is based on a machined, powder-coated aluminum frame for shock-proofness, best sealing qualities and maximum heat dissipation. This is practical to extend the outdoor temperature range and/or to extend the power injected in the transducers. The PragmaPro is aiming at a very wide range of applications, such as weld scanning, corrosion mapping and composite testing.
>

IntraPhase Athena Phased Array System

The Athena Phased Array system, manufactured by WesDyne NDE Products & Technology, consists of a pha
...
sed array acquisition system and PC running IntraSpect software. A PC is used to perform acquisition, analysis and storage of the data. System hardware is capable of operating up to four data sets with any combination of phased array or conventional UT probes. NOW AVAILABLE IN 64-64 CONFIGURATION.
>

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