Can fillet welds be inspected by radiography or ultrasonic testing?
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Looking at Table 1 in GB/T20801.5, the values for the proportion of fillet welds to be inspected by radiographic testing/ultrasonic testing, as specified in the inspection levels, methods, and proportions, are all marked as “–”. Does this mean that ultrasonic and radiographic testing cannot be carried out on fillet welds? However, clause 6.3.2 C) stipulates that ultrasonic testing of fillet welds and T-joints must comply with the requirements of JB/T4730-2005; so can ultrasonic testing be carried out on fillet welds on site? It seems that radiation therapy is definitely not an option
Can it do everything, or can it only perform ultrasounds?
Both ray ultrasonics and ultrasound can be used; in most cases, surface inspection is carried out.
Both ray ultrasonics and ultrasound can be used, but the latter is rarely applied; surface inspection is usually carried out instead.
The non-destructive testing standards you are referring to are outdated; the new version NBT47030-2013 allows for radiographic testing of fillet welds, but the testing agencies are unwilling to carry out this testing as it is quite difficult, and evaluating the test results is also challenging
Yes, it can be done, please! With our testing, we only check the fusion
Don’t listen to their nonsense; it’s possible to do it, but the key is what the result will be Using radiography or ultrasonic testing on fillet welds can distort the shape of the weld and amplify defects; as a result, what was once considered acceptable may become unacceptable – a grade 1 part might turn into a grade 2 part. Such things can indeed happen. So it’s not suitable for this purpose; if it has to be done, then magnetic particle or penetrant testing should be used.
Thank you for the reply. So it’s possible to do it, but there will be distortion, right? I asked the on-site workers who are working on our project, and they said that basically RT or UT is not used at all
I hadn’t paid attention to this before; I think it’s better to wait for someone who is an expert to answer it. I’m also studying *