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ULTRASOUND INSTITUTE
The Ultrasound Institute can develop new advanced ultrasonic measurement, imaging and NDT techniques for non-conventional applications.
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Technical Discussions
David Harvey
David Harvey
06:05 Jul-23-1999
Automated thickness measurement with xray

I have an interesting problem, and would appreciate any assistance from the membership of the forum.

We have been given the task of measuring the thickness of a refractory metal (Nb, Ta, Zr alloys) using radiograpy. We need to see differences of 0.002" in materials ranging from 0.014" thick to 0.070" thick.

Currently, this is done using film radiography and evaluating the density of questionable areas.

There are many parts, some with thicknesses varied enough that double loading is required to get the desired densities on the thick and thin regions.

The number of shots in one year exceeds 9000.

Is anyone familiar with a technique or system that could allow us to do this digitally? Real-time?

In advance, Thank You for your help!

David Harvey
Albany, Oregon, USA


    
 
 Reply 
 
JOSEPH PASCENTE
Engineering
Lixi, Inc., USA, Joined Nov 1998, 39

JOSEPH PASCENTE

Engineering
Lixi, Inc.,
USA,
Joined Nov 1998
39
05:27 Jul-24-1999
Re: Automated thickness measurement with xray
: I have an interesting problem, and would appreciate any assistance from the membership of the forum.

: We have been given the task of measuring the thickness of a refractory metal (Nb, Ta, Zr alloys) using radiograpy. We need to see differences of 0.002" in materials ranging from 0.014" thick to 0.070" thick.

: Currently, this is done using film radiography and evaluating the density of questionable areas.

: There are many parts, some with thicknesses varied enough that double loading is required to get the desired densities on the thick and thin regions.

: The number of shots in one year exceeds 9000.

: Is anyone familiar with a technique or system that could allow us to do this digitally? Real-time?

: In advance, Thank You for your help!

: David Harvey
: Albany, Oregon, USA




    
 
 Reply 
 
hullas
hullas
08:17 Apr-10-2000
Re: Automated thickness measurement with xray
: : I have an interesting problem, and would appreciate any assistance from the membership of the forum.

: : We have been given the task of measuring the thickness of a refractory metal (Nb, Ta, Zr alloys) using radiograpy. We need to see differences of 0.002" in materials ranging from 0.014" thick to 0.070" thick.

: : Currently, this is done using film radiography and evaluating the density of questionable areas.

: : There are many parts, some with thicknesses varied enough that double loading is required to get the desired densities on the thick and thin regions.

: : The number of shots in one year exceeds 9000.

: : Is anyone familiar with a technique or system that could allow us to do this digitally? Real-time?

: : In advance, Thank You for your help!

: : David Harvey
: : Albany, Oregon, USA




    
 
 Reply 
 
Stephen Bracegirdle
Sales
OIS Engineering Ltd, United Kingdom, Joined Feb 2000, 5

Stephen Bracegirdle

Sales
OIS Engineering Ltd,
United Kingdom,
Joined Feb 2000
5
00:19 Apr-12-2000
Re: Automated thickness measurement with xray
Digital radiography will give you more depth range when looking at these components and does away with the need for double loading. The '1 in 35'definition you specify (0.002 in 0.070) is within the capabilities of real-time digital systems we can provide.

If you haven't already solved the problem elsewhere, please forward me a more detailed summary of the products and process handling requirements to fit in with the 9k shots p.a.

Regards,

Stephen Bracegirdle



    
 
 Reply 
 
samarth
samarth
07:34 Apr-12-2000
Re: Automated thickness measurement with xray
: Digital radiography will give you more depth range when looking at these components and does away with the need for double loading. The '1 in 35'definition you specify (0.002 in 0.070) is within the capabilities of real-time digital systems we can provide.

: If you haven't already solved the problem elsewhere, please forward me a more detailed summary of the products and process handling requirements to fit in with the 9k shots p.a.

: Regards,

: Stephen Bracegirdle




    
 
 Reply 
 

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