Magniflux

[earl1937]

  If you own an aircraft, especially if it is a WW2 war bird and you have to have a "magniflux" test performed, what is it and what purpose does it serve?

[cobia38]

 Its to test for cracks in cast iron/aluminum parts,everyone know that 

[LCADolby]

(magni)Flux Capacitor

[earl1937]

Its to test for cracks in cast iron/aluminum parts,everyone know that 

If your aircraft needed a "magniflux" test, it is a test to show if your prop blades have cracks or other damage, which may have been caused by picking up "FOD" objects from taxing and takeoff on the ground. It generally is a standard test procedure during a "IRAN" inspection.

[MiloMorai]

Only if the props are of ferromagnetic material earl.

[climber]

Magniflux is the company that makes the products used for Magnetic Particle testing.  First the part must be ferro-magnetic, if not another form of testing will need to be done, eddycurrent or dye penetrant testing for example.  The defects will show up as flux leakage when the part is magnetized or has a current running through it thus producing a magnetic field. 

This all falls in to nondestructive testing or NDT. 

I'm taking a class on Eddycurrent Testing in July and will be doing a Magnetic Particle class very soon.   

[hitech]

There was an A&D on my prop that either needed to be tested every 100 hours or replace the clam shells.

3rd 100 hour test showed a crack, and hence replaced them anyway. $3500 for 2 pieces of aluminum.

HiTech

[Stampf]

There was an A&D on my prop that either needed to be tested every 100 hours or replace the clam shells.

3rd 100 hour test showed a crack, and hence replaced them anyway. $3500 for 2 pieces of aluminum.

HiTech

Get a Focke Wulf and...

...Spin Wood.

 

[DaveBB]

I perform nondestructive testing for a living.  Yes, magnetic particle testing is very good for detecting surface cracks in ferromagnetic parts.  Liquid penetrant testing can be used to detect surface cracks in non-ferromagnetic metals (aluminum, etc).  Of course ultrasound and eddy current testing didn't really develop until after World War II. 

[climber]

Dave what type of NDT work do you do?  Petroleum, aerospace, etc?  I'm in school for both NDT and QA/QC looking to get out in around 2 years.  Always trying to make connections in the field.

-Climber

[danny76]

There was an A&D on my prop that either needed to be tested every 100 hours or replace the clam shells.

3rd 100 hour test showed a crack, and hence replaced them anyway. $3500 for 2 pieces of aluminum.

HiTech

 

Admittedly, they probably had been bent into an aesthetically pleasing shape

[earl1937]

If you own an aircraft, especially if it is a WW2 war bird and you have to have a "magniflux" test performed, what is it and what purpose does it serve?

All replies were good and informative, but Hi Tech, as usual, hit the nail on the head! The answer I was looking for was the prop magniflux testing, which I was very much involved with as a maintaince officer for awhile. I realize that in the past 30 to 40 years, many more parts of an aircraft are now tested as standard practice, its just that I thought that some of the guys who read this forum, it might add to their aviation knowledge!

[USRanger]

Its to test for cracks in cast iron/aluminum parts,everyone know that 

Wrong.  But we do have an exciting parting gift for ya!