I am currently learning to use the xray system we have to evaluate welds on 3/8" A36 steel plate with a 1/4" back strip. I am mcurrently trying AGFA D7 film using the settings of 155 KVp, 5Ma, and a time of 5.5 minutes. We are using lead backed cassette holders, developed manually. The result of my latest xrays is a very dark image of the weld area. I had sucess with film left over from xrays performed in the past, but i'm not sure about the type of film. The manual developing chemicals were freshly mixed according to instructions.
Can anyone provide me with any tips on settings or film types that might show the weld a bit lighter? Thanks in advance for any help !
I am currently learning to use the radiograph to evaluate 3/8" A36 steel plate with a 1/4" back strip. I tried using an AGFA D7 filmon the xray system we have at 155 KVp, 5 Ma, and a time of 5.5 minutes. The film cassette has lead backing, and is shot from a distance of 16". The xray is very dark, and difficult to determine any defects in the weld.
Anyone have some tips on settings, film type, or any other recommendations for me ? Thanks in advance for any help !
Thanks to all for the help with my question. The problem was the film. Based on suggestions from the forum, the change in film type worked ! Again, many thanks to all who took the time to answer !