Vacuum Testing of Aerospace Equipment implementing Custom Chambers

Vacuum Testing of Aerospace Equipment implementing Custom Chambers
Vacuum Testing of Aerospace Equipment implementing Custom Chambers
A large aerospace company and a DoD contractor requested a quote from us for a custom vacuum tester to be utilized for the vacuum testing of various Aerospace Equipment Parts on their production line. All of their items were solid and ridged containers, cubic, square, and cylindrical which needed to be tested by following the vacuum submersion testing technique.

With that said, this test does require an extra step in that the part must be under vacuum when it is above the water level. As soon as the target vacuum is reached, the part is dunked under water. Once the test is completed, the part is lifted above the water level one more time before the chamber is vented. The solution we provided was to modify our standard Vacuum Bubble Leak Tester to accommodate all our client’s requests. The vacuum chamber is about 12-inch Wide, 10-inch Deep, and about 8-inch High. The vacuum is generated by a standard duty, rotary vane vacuum pump. The rotary vane vacuum pump comes with an oil mist eliminator, exhaust filter that will minimize or prevent from oil mist being exhausted into it’s surroundings. Furthermore, the rotary vane vacuum pump also comes with a vacuum pump protection valve which will close off if water is present in the vacuum line.

The chamber is top loading with a hinged lid. On the lid is the vacuum gauge, the venting valve, and the vacuum valve. Inside the chamber is a plate that can be lifted either upwards or downwards, depending if the testing sample is needed to be above the water line or below the water level. The specimen plate is lifted via the two levers which are connected to the front wall. A vacuum rotary feedthrough will translate rotary power from the outside of the chamber to the inside of the chamber without compromising vacuum during operations. The levers can either swing inwards and lower the tray or swing outwards and lift the tray. We also have a fully automated pneumatic version that does not use levers by four pneumatic cylinders to drive the tray upwards or downwards. If you are looking for a vacuum dunk test which requires some complex procedures, feel free to reach out to us to discover how we can assist you with you leak testing needs.

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Vacuum Decay Leak Testing Systems
Vacuum Decay Leak Testing Systems are Instruments that detect and quantify a leak by measuring the drop in vacuum (pressure) inside the specimen. During a vacuum decay leak test, the specimen is placed into a vacuum chamber, the vacuum is pulled to a specified setpoint, and the drop in vacuum is monitored and recorded over time. If a leak in the specimen exists, the air will travel from a higher pressure (inside the specimen) to a lower pressure (vacuum chamber). As a results of the additional air, the vacuum levels will drop whereas a leak can be detected and quantified.
USB Vacuum Feedthroughs
USB Vacuum Feedthroughs are 2.0 USB ports which enable you to run a USB signal into the vacuum chamber during vacuum and pump-down operations. You have several options on what type and size of USB ports you are looking to add to a vacuum chamber.
Our Work: Nuclear Imaging Research using Acrylic Vacuum Chamber
Nuclear imaging is quickly becoming more and more sophisticated and images unimaginable twenty years ago are become reality – think about the recent image of a single atom. Nuclear imaging is detection is a highly technological field.
Related Articles: Force Decay Leak Testing
Force Decay Leak Testing is a very popular quantitative leak testing method used to quality test package and product integrity due to its ability to detect small leaks which cannot be seen through visual inspection. In this method, the test specimen is internally inflated by either internal pressurization or vacuum force. The inflated test specimen will, in turn, apply a force on a pressure transducer. Finally, the change in force applied by the inflated specimen over a specified time is observed.