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  • Users: Ndtmetal
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  1. Ndtmetal

    film exposur time calculation

    We are having a external partner to do some radiographies for us and I am searching for a way to check if he is using the correct exposure time. The thickness is 0.5, 2, 5 for Al, cu and ss and Dustance= 540cm A=10,Kv=100 and the film is D4. I have found the formula for time exposure but I dont...
  2. Ndtmetal

    Digital radiography standards and differences in acceptance criteria

    We are about to test digital radiography with GE, so long I have found these standards but I am worried I missing something. More over I want to know whats the main differences in acceptance criteria CEN standards EN 14784-1 : Industrial CR with storage phosphor imaging plates Part 1 ...
  3. Ndtmetal

    selenium or iridium

    Regarding film screen radiography in welds, which one of this isotopes do you believe gives the best image quality? Most references I found support the use of selenium, but I would like to know why and in which way is it better?
  4. Ndtmetal

    Laser welding

    I have to create on purpose very small defects (>4mm) on Al stainless steel and 304L welds (by laser welding).The reason for doing that is to check a if a new NDT system can detect them. The thickness of the samples will be 2, 5 and 10cm. Do you think that I will be able to creat very small...
  5. Ndtmetal

    Digital Radiography compared to screen-film and standards

    Hi All, I was wondering if there are any available standards for digital radiography yet? In thread thread286-141480 someone mentioned that digital RT is currently being reviewed under a proposed ASME Boiler and Pressure Vessel Code case. When is that expected to be ready? I am working on a...

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