Dunk test also known as submersion or bubble testing is the most basic and traditional air leak testing process conducted. It is conducted by pressuring the test part, submerging it in water, and then observing for escaping air/gas bubbles. Though this type of testing process is effective for identifying leak locations, it is not a recommended testing process to measure or quantify leaks.
The leak rate is directly proportional to the intensity and size of bubbles created.
Leak rate= (3.14 x (D)^3 x 0.001/6) x frequency
Where D= bubble diameter(mm) and frequency= No. of bubbles/min
Did you know? A leak can take 9 months or even longer to fully develop and occur.
Watch the process unfold!
