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Engineering Fields - Electromechanical Engineering - New Member

Join Date: Jan 2007
Posts: 13

Materials transparent to x-rays?

02/28/2007 4:16 PM

We have an application where we would like to x-ray some aluminum castings sitting on a fixture of some sort. I am wondering what is the best material to use for the fixture that would not interfere with the x-rays? Also is there some sort of reference online or offline that lists how materials behave under x-rays.

Thanks in advance.

Mike

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Anonymous Poster
#1

Re: Materials transparent to x-rays?

02/28/2007 7:42 PM

Hi mike

Can I suggest a carbon fibre reinforced epoxy. This can be made robust enough to support your castings, but thin enough not to obscure any defects and may be even transparent depending upon your x-ray energy.

Hope this helps

Fred

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Popular Science - Weaponology - New Member

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#2

Re: Materials transparent to x-rays?

02/28/2007 8:48 PM

Glass is mostly transparen at "X" ray.

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There's them that knows and them that just thinks they know, whitch are you? Stir the pot and see what rises up. I have catalytic properties I get a reaction going.
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Guru

Join Date: Sep 2006
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#3

Re: Materials transparent to x-rays?

03/01/2007 12:14 AM

Aerogel is about as transparent to x-rays as anything you'll find, and it's strong:

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#4

Re: Materials transparent to x-rays?

03/01/2007 2:57 AM

Timber-Bamboo-Plastic would be transparent(or almost).

Why not 3 or4 delicate Steel pins--they will be definitely opaque posts.

You know these are there for sure. So no ambiguity due to these.

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Anonymous Poster
#5

Re: Materials transparent to x-rays?

03/01/2007 6:28 AM

Ceramicshield

ceramiccementcorp.com

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Anonymous Poster
#6

Re: Materials transparent to x-rays?

03/01/2007 8:41 AM

Carbon Fiber would not be a good choice for most X-Ray applications - there are numerous examples of medical imaging applications which utilize either glass or quartz fiber re-inforced composites. Another option might also be Lexan.

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Anonymous Poster
#7

Re: Materials transparent to x-rays?

03/03/2007 9:22 PM

Obviously you have no experience with radiography... contact a NondestructiveTest (NDT) company that does radiography, and have them develop the full procedure... including fixture design. Radiographic interpretation is not like looking for a surface crack or a bad finish, it takes training and experience.

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Active Contributor
Engineering Fields - Electromechanical Engineering - New Member

Join Date: Jan 2007
Posts: 13
#8
In reply to #7

Re: Materials transparent to x-rays?

03/04/2007 6:45 PM

With all do respect, I agree with your response, but at the same time it bothers me. We do use outside consultants, but I don't think that relieves us of our responsibility to learn things for ourselves to make informed decisions about what they are telling us.

From my experience, a lot of consultants aren't very creative or concerned with the big picture. They simply want to achieve the measurables for the project and get paid. As long as it works adequately, they don't have to live with the results or be concerned about the next steps or how to leverage the benefits of the project to other areas.

Thanks,
Mike

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