Are containment tests today in developemnt of Hi bypass engines still relevant?
Absolutely.
Or are the regulators and the manufacturers missing something.
What "something" are they missing?
N1 Fan blade seperation tests seem to be the standard examples used in testing of engine containment.
Yes, for testing fan blade separation. Only.
But are these huge by-pass designs now making this test out dated.
No. The larger blades make containment more challenging.
When they fail a blade in these tests, surely the majority of the blade exits the engine, posing a lessor chance of no containment.
Surely not!
With the likes of QF32 incident, and quite a few CF6-80 uncontained failures and probably others I havent listed in the last few years.
Those were not fan blade separation incidents.
...one cant test the disintegration of a 200kg turbine wheel at 1000s of rpms
Not practical to contain a ruptured or released disk.
Due to the tremendous efforts of countless persons involved with the development and manufacturing of turbine engines, disk separation is exceedingly rare.