Hi, has anyone here built a hyperbaric test chamber for your ROVs? I’ve made one from a water filter housing for 30€, but it only goes up to 10 bar, and can only fit small parts. I’m looking for a way to build one capable of 50 bar, with space inside 150x400mm or more, as cheap as possible while still being safe (meaning, able to degas properly). I’ve considered second hand hydraulic cylinders, pipe spools with blind flanges, threaded pipe nipples with screw-on end caps, but at these sizes all of them are super expensive (200-300€ at least). Any advice?
EDIT: one more thing, if use this test chamber to test parts to implosion (such as electronics enclosures), I realized the implosion would cause sudden spike in pressure, local cavitation and shock waves that might blow the chamber apart. Are there any practical ways to prevent said damage? One idea I have is to fill the electronics enclosure with water, but leave some air inside (like, 95% water, 5% air) to still make it implode, but have less air to create smaller pressure shock. I also read somewhere that such test chambers are often filled with plastic spheres alongside the tested part, and they somehow absorb the shockwaves - although I don’t really get how that works, and what characteristics these spheres must have (solid? hollow?) to make them work. Any insights would be appreciated.
