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 -

Acoustic Emission Consulting, Inc.
Acoustic Emission Consulting, Inc. specializes in the design of small portable AE instruments for field and lab use.
1332 views
Technical Discussions
Nguyen Tuan
NDT Inspector
Vietnam, Joined Apr 2006, 1

Nguyen Tuan

NDT Inspector
Vietnam,
Joined Apr 2006
1
02:01 Apr-11-2006
Need a flaw detector for NDT inspection of ship propeller

Hi all,

Our company manufacture ship propellers. Propellers ard made from Cu alloy by die casting. Thickness of wing propeller from 3cm to 20 cm. We want to inspection flaws such as porosity. We have use Ultasonic flaw detector to inspection but it was so slow. UT method only inspection with less than 4cm areas only.

We are looking to buy a Flaw detector can detect flaws such above application with high speed inspection.

Please kindly show me which method is suitable with our application?

Looking forward to hearing from you soon


 
 Reply 
 
Ed
Ed
03:46 Apr-12-2006
Re: Need a flaw detector for NDT inspection of ship propeller
----------- Start Original Message -----------
: Hi all,
: Our company manufacture ship propellers. Propellers ard made from Cu alloy by die casting. Thickness of wing propeller from 3cm to 20 cm. We want to inspection flaws such as porosity. We have use Ultasonic flaw detector to inspection but it was so slow. UT method only inspection with less than 4cm areas only.
: We are looking to buy a Flaw detector can detect flaws such above application with high speed inspection.
: Please kindly show me which method is suitable with our application?
: Looking forward to hearing from you soon
------------ End Original Message ------------

Why don't you try X-Ray?



 
 Reply 
 
Jukka Hakala
Director,
NDT-Team Oy, Finland, Joined Oct 2004, 7

Jukka Hakala

Director,
NDT-Team Oy,
Finland,
Joined Oct 2004
7
07:01 Apr-13-2006
Re: Need a flaw detector for NDT inspection of ship propeller
----------- Start Original Message -----------
: : Hi all,
: : Our company manufacture ship propellers. Propellers ard made from Cu alloy by die casting. Thickness of wing propeller from 3cm to 20 cm. We want to inspection flaws such as porosity. We have use Ultasonic flaw detector to inspection but it was so slow. UT method only inspection with less than 4cm areas only.
: : We are looking to buy a Flaw detector can detect flaws such above application with high speed inspection.
: : Please kindly show me which method is suitable with our application?
: : Looking forward to hearing from you soon
: Why don't you try X-Ray?
------------ End Original Message ------------

If the geometry is suitable I suggest x-ray imaging with using digital flat panel. Exposuring time is short and you can analyse the image directly from computer screen.


 
 Reply 
 
Rizwan S Choudhry
Student, PhD
The University of Manchester, United Kingdom, Joined Jun 2005, 1

Rizwan S Choudhry

Student, PhD
The University of Manchester,
United Kingdom,
Joined Jun 2005
1
00:27 Apr-13-2006
Re: Need a flaw detector for NDT inspection of ship propeller
peace & blessings
X-ray Tomography can be good but depending on the level of information you require the time can vary from few mins to few hours.
I suggest you should look at the following links for further info
1. Chapter4 of the report which u can download from
http://www.geocities.com/rizwan_saeed/Abstract.html

just scroll to the bottom of the page to get a link to report.
2. Stock, S.R., X-ray microtomography of materials. Int Mater Rev, 1999. 44(4):p. 141– 164.

rizwan

----------- Start Original Message -----------
: : : Hi all,
: : : Our company manufacture ship propellers. Propellers ard made from Cu alloy by die casting. Thickness of wing propeller from 3cm to 20 cm. We want to inspection flaws such as porosity. We have use Ultasonic flaw detector to inspection but it was so slow. UT method only inspection with less than 4cm areas only.
: : : We are looking to buy a Flaw detector can detect flaws such above application with high speed inspection.
: : : Please kindly show me which method is suitable with our application?
: : : Looking forward to hearing from you soon
: : Why don't you try X-Ray?
: If the geometry is suitable I suggest x-ray imaging with using digital flat panel. Exposuring time is short and you can analyse the image directly from computer screen.
------------ End Original Message ------------




 
 Reply 
 
Grzegorz Latarowski
Grzegorz Latarowski
00:53 Apr-13-2006
Re: Need a flaw detector for NDT inspection of ship propeller
Hi Nguyen,

I suggest You to contact our company directly if You want a specialized application. Our company is manufacturing Ultrasonic Flaw Detector with specialized equipments such as ultrasonic scanners and also specialized investigating methods.

Please don't hesitate ask further questions through my email.

We can prepare a special offer for a discussion.

Best regards,
Grzegorz Latarowski
gl.ultrasonic@home.pl
http://ultrasonic.home.pl/

----------- Start Original Message -----------
: Hi all,
: Our company manufacture ship propellers. Propellers ard made from Cu alloy by die casting. Thickness of wing propeller from 3cm to 20 cm. We want to inspection flaws such as porosity. We have use Ultasonic flaw detector to inspection but it was so slow. UT method only inspection with less than 4cm areas only.
: We are looking to buy a Flaw detector can detect flaws such above application with high speed inspection.
: Please kindly show me which method is suitable with our application?
: Looking forward to hearing from you soon
------------ End Original Message ------------




 
 Reply 
 
Norman A. Woodward
Norman A. Woodward
04:19 Apr-13-2006
Re: Need a flaw detector for NDT inspection of ship propeller
----------- Start Original Message -----------
: peace & blessings
: X-ray Tomography can be good but depending on the level of information you require the time can vary from few mins to few hours.
: I suggest you should look at the following links for further info
: 1. Chapter4 of the report which u can download from
: http://www.geocities.com/rizwan_saeed/Abstract.html
: just scroll to the bottom of the page to get a link to report.
: 2. Stock, S.R., X-ray microtomography of materials. Int Mater Rev, 1999. 44(4):p. 141– 164.
: rizwan
: : : : Hi all,
: : : : Our company manufacture ship propellers. Propellers ard made from Cu alloy by die casting. Thickness of wing propeller from 3cm to 20 cm. We want to inspection flaws such as porosity. We have use Ultasonic flaw detector to inspection but it was so slow. UT method only inspection with less than 4cm areas only.
: : : : We are looking to buy a Flaw detector can detect flaws such above application with high speed inspection.
: : : : Please kindly show me which method is suitable with our application?
: : : : Looking forward to hearing from you soon
: : : Why don't you try X-Ray?
: : If the geometry is suitable I suggest x-ray imaging with using digital flat panel. Exposuring time is short and you can analyse the image directly from computer screen.
------------ End Original Message ------------

Radiography would be your best bet, but shooting through 20cm of Cu will require at least a 2 Mev apparatus or a Co source. This will involve, besides the cost of new equipment, the moving the part to a highly shielded/isolated location.

The good news is that using the mentioned digital flat panels, or computed radiography plates, should give you adequate sensitivity at relatively short exposure time, in comparison to film, and at a fraction of the cost.


 
 Reply 
 

Product Spotlight

High-end Ultrasonic Flaw Detector with 32:128PR PAUT and 2-ch TOFD: SyncScan 2

SIUI’s newly launched SyncScan 2, is a high-end ultrasonic flaw detector with 32:128PR PAUT and
...
2-ch TOFD, which can maximize your efficiency for PA and TOFD. ● Support PA/TOFD/UT ● 32-ch PA is more suitable for inspection on extra-thick wall and high-attenuation material. ● 32-ch PA and 2-ch TOFD work simultaneously. ● Support PR mode for corrosion inspection.
>

PROlineTOP Plug & Play Ultrasonic inspection device

As Plug & Play solution it units all control and operation elements in a small housing and therefo
...
re replaces the typical control cabinet...
>

GUL QSR1® Scanning

How do you measure pipe wall thickness without direct access to the area? QSR® Scanning - Guide Wav
...
e Quantitative Short Range Scanning.
>

FMC/TFM

Next generation for Phased Array UT is here now with FMC/TFM! Have higher resolution imaging, impr
...
oved signal to noise ratio, characterize, size and analyze defects better with access to several wave mode views and save raw FMC data for higher quality analysis.  Some of the benefits are:
  • Beautiful Image! Easier to understand what you're looking at
  • Completely focused in entire image or volume
  • Much easier to define setups before inspection
  • Easier to decipher geometry echoes from real defects
  • Oriented defects (e.g. cracks) are imaged better
  • See image from different wave modes from one FMC inspection
  • FMC data can be reprocessed/analyzed without going back to the field
>

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