What is "ultrasonic testing" used for?

Question

They use it here at the company I work at. They produce pressure vessels here.

Answer 1

UT is primarily used to detect defects such as cracks, inclusions, porosity or slag in load-bearing components. There are a few primary test setups. The tester can either test for the uninterrupted transmission of the sound wave (through transmission), listen for a reflected sound wave, or use one transducer to generate the sound wave and another to detect. All of these techniques work on the principle that a defect will alter the propagation of the sound wave.

Answer 2

It is a non-destructive test for structural integrity.

They send soundwaves through a structure, and analyze the results (similar to x-rays using electromagnetic radiation).

If there are microfractures in a material, or even a weld, the sound waves won't propagate in the same way (they will be severly dampened). This can be detected before problems develop from sending out a vessel w/ an unexpected crack or other defect.

Answer 3

In your application, you can use it to detect cracks. The US waves will interact differently depending on the material. If the wave hits air, the object will appear differently when compared to a solid vessel. It's used extensively on high pressure pipelines. Previously, x-rays were utilized but the US machines are much more portable than x-ray tubes.

Answer 4

It's used to the pregnent woman to see if the baby is ok.If you have seen a baby in a black and white monitor thats and ultrasonic test.I'll think you'll find the link usefull :-)

Answer 5

Probably to test for defects or weaknesses in the vessels.

Answer 6

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Answer 7

to test for unobservable cracks in castings. a none destructive testing.

Answer 8

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