where expertise comes together - since 1996

Web's Largest Portal of Nondestructive Testing (NDT)
Open Access Database (Conference Proceedings, Articles, News), Exhibition, Forum, Network

All Forum Boards
Technical Discussions >
Automated thickness measurement with xray
Career Discussions
Job Offers
Job Seeks
Classified Ads
About NDT.net
Articles & News

573 views
06:05 Jul-23-1999
David Harvey
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


 
05:27 Jul-24-1999

JOSEPH PASCENTE

Engineering
Lixi, Inc.,
USA,
Joined Nov 1998
39
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




 
08:17 Apr-10-2000
hullas
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




 
00:19 Apr-12-2000

Stephen Bracegirdle

Sales
OIS Engineering Ltd,
United Kingdom,
Joined Feb 2000
5
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



 
07:34 Apr-12-2000
samarth
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




 


© NDT.net - The Web's Largest Portal of Nondestructive Testing (NDT) ISSN 1435-4934

Open Access Database, |Conference Proceedings| |Articles| |News| |Exhibition| |Forum| |Professional Network|