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KARL DEUTSCH
INSTRUMENTS AND SYSTEMS FOR NON-DESTRUCTIVE TESTING OF MATERIALS.
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Technical Discussions
gowrishankar
R & D, scientist
ISRO, India, Joined Nov 2008, 34

gowrishankar

R & D, scientist
ISRO,
India,
Joined Nov 2008
34
01:14 Nov-26-2008
digital radiography

Sir can you pl answer for the following doubts

1. Can we achieve <=2% sensitivity in Flat panel detector technology? will there be any ambiguity in interpretation of these results for a ASNT level 11 interpreter who is experienced in film radiography ?

2. What is MTF and how it is related to sensitivity ?

3. If we digitise conventional film radiograph and correlate its defective and non defective zones(corresponds /directly relates to thickness of the specimen) with gray level values and prediction of defect depth (ie reduction in effective thickness due to defect (third dimension of defect, any way length and width is known by radiograph).
whether this method is correct ?
any alternate metods are available for prediction of defect depth

pl clarify and if possible please forward any useful technical literature in this topic.
regards
gowrishankar





 
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