Forum Technical Discussions      Re: Maximum penetration of Ir-192 in steel Posted by: Juan Amado , E-mail: Address, on November 14, 2008 at 19:53 : In Reply to: Re: Maximum penetration of Ir-192 in steel posted by : tj , E-mail: Address, on November 14, 2008 at 17:11 : ----------- Start Original Message ----------- : : Hi, : : We are using Ir-192 to examine the casting quality of a steel part with maximum thickness 95.25mm: : : (1) Is Ir-192 OK for this application? : : (2) Does the decay influence the maximum penetration thickness? : : Many thanks, : : Pengzhu : This would be working at the upper practical limit of Ir192. The energy levels would remain the same with decay. However, with loss of activity comes increased shot time and at 3in. of steel it would be impractical for normal use. Better to use higher energy x-ray or cobalt60 gamma. ------------ End Original Message ------------ If 95mm is the maximum thickness, but you have thinner sections, you could probably gain valuable information about the part using Ir192, however, if you are looking to get a good density reading at the thickest portion of the casting you probably will not get it with this source. Hope this helps, regards, Juan Amado Follow Ups: Post a Followup: Name: E-Mail: Subject: Comments: ----------- Start Original Message ----------- : : : Hi, : : : We are using Ir-192 to examine the casting quality of a steel part with maximum thickness 95.25mm: : : : (1) Is Ir-192 OK for this application? : : : (2) Does the decay influence the maximum penetration thickness? : : : Many thanks, : : : Pengzhu : : This would be working at the upper practical limit of Ir192. The energy levels would remain the same with decay. However, with loss of activity comes increased shot time and at 3in. of steel it would be impractical for normal use. Better to use higher energy x-ray or cobalt60 gamma. : : If 95mm is the maximum thickness, but you have thinner sections, you could probably gain valuable information about the part using Ir192, however, if you are looking to get a good density reading at the thickest portion of the casting you probably will not get it with this source. : Hope this helps, regards, : Juan Amado ------------ End Original Message ------------ Optional Link URL: Example: "http://www....html". Alternative write "http://www.ndt.net/wshop/attach/filename.htm" if you transfered a filename.htm via FTP Page Title: is important! Optional Image URL: http://www....gif Attention! Please click the button only once. This may take a moment to process Forum Technical Discussions Help