Using Ultrasound to Check Brazed Joints

Ultra sound at that frequency and a non contact sport. I think you would loose so much energy in the air it could not be done. Or the sould waves would be to bad it might be hard to filter out of the enviornment, and you might kill people with it.

Just shake the place up it would.

oil or water all can be used.

howis its thickness?

you can use another way to get to it.

thk is around 10 mm. Can u please tell me, how feasible is to go for Airborne ultrasound?

can u show me a picture, so that I can understand what will you detect?

have u ever try x-ray?

No, it will not work. There is incredible energy loss at the air to metal interface due to the huge acoustic impedance mismatch.

For the part that you have, it appears that it is OK to immerse it in water. Thus, put it in water in an ultrasonic inspection tank. The transducer will also be immersed in the water, and it should be a focused beam transducer of 5 MHz or higher for your part, and an inch in diameter. You obviously need a UT pulser-receiver and display unit to power your transducer and allow you to look at the results. You need a precision mechanism to hold the transducer so that you can move it to inspect the entire weldment length.