Abstract
Leak tests are used in many industrial applications, a typical example are the headlights of cars. In these tests are use different principles and different working media. The monitored parameters are usually the amount of leakage media depending on the pressure drop and the time at which the leakage occurs. The article describes the possibility of performing leak tests using compressed air, their comparison and the subsequent creation of mathematical models.
Highlights
Leak tests are used in many different areas of industry
When comparing results of measurements and simulations the best match was reached for method of pressure decay in closed volume Fig
The average drop in pressure for all constant pressures ranged around 12%
Summary
Leak tests are used in many different areas of industry. Very important is the use in medical devices where high purity and environmental sterility is required. For example, in medical bags, catheters, medical valves, filter membranes, tubing and fittings, or condoms etc Another major area of use is the packaging industry. Leakage of liquids or gases may negatively affect the properties of metal or plastic materials Another factor is the possible environmental contamination. The most commonly used leak testing methods in the industrial environment are: bubble test (underwater test), bubble method (soap painting), pressure and vacuum decay method and methods using detection/marking gas (halogen, helium and hydrogen). These methods are differ in sensitivity range [2]
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