Non destructive examination of the inside of a nozzle
Non destructive examination of the inside of a nozzle
(OP)
Hi
I have a nozzle that has a converging section, a diverging section, followed by another converging section at the nozzle tip. The nozzle is about 0.5'' inside diameter at the converging sections. The nozzle is about 3.5' long and has a constant outside diameter of 1''. It is made of steel, although I am not sure what type (classified). The nozzle tip has eroded significantly. I need to determine how the geometry of the inside of this nozzle has changed. I would really prefer not to cut it open, as it is needed for tests to determine how the erosion has impacted the spray quality. As well, I would use a mold, but it may not give me all the details of the internal geometry that I need, and it is hard to pull out of the nozzle and keep intact once it has set.
Are there any non-destructive examination tests that I could use to determine what the nozzle looks like on the inside so that I can get a good visual of where the erosion inside the nozzle has occurred? Thanks!
Regards,
Nick
I have a nozzle that has a converging section, a diverging section, followed by another converging section at the nozzle tip. The nozzle is about 0.5'' inside diameter at the converging sections. The nozzle is about 3.5' long and has a constant outside diameter of 1''. It is made of steel, although I am not sure what type (classified). The nozzle tip has eroded significantly. I need to determine how the geometry of the inside of this nozzle has changed. I would really prefer not to cut it open, as it is needed for tests to determine how the erosion has impacted the spray quality. As well, I would use a mold, but it may not give me all the details of the internal geometry that I need, and it is hard to pull out of the nozzle and keep intact once it has set.
Are there any non-destructive examination tests that I could use to determine what the nozzle looks like on the inside so that I can get a good visual of where the erosion inside the nozzle has occurred? Thanks!
Regards,
Nick





RE: Non destructive examination of the inside of a nozzle
RE: Non destructive examination of the inside of a nozzle
RE: Non destructive examination of the inside of a nozzle
I have found digital RT provides excellent sensitivity to density changes related to material loss. The remote field eddy current testing can be done from the outside surface of the nozzle.
RE: Non destructive examination of the inside of a nozzle
RE: Non destructive examination of the inside of a nozzle
RE: Non destructive examination of the inside of a nozzle
I have considered a mold. I am going to try that, but I need the mold to fit through the tip of the nozzle, which is 0.5''. The widest part of the nozzle is about 0.88''. Therefore I am not sure that the mold will stay intact as I try to pull it out, and I am afraid the details of the erosion will be lost.
Thanks for the replies.
RE: Non destructive examination of the inside of a nozzle