- 1. Magnaflux (score: 1)
- Author: "Dunst, Mordecai" <mdunst@smtplink.coh.org>
- Date: Tue, 04 Mar 97 19:53:35 pst
- Q) Conventional wisdom dictates that a magnafluxed piece of ferrous metal is OK to use. Suppose that piece of metal has been used for MANY hours...under hard loads. i.e. a buddy of mine has an older
- /html/shop-talk/1997-03/msg00031.html (7,721 bytes)
- 2. Re: Magnaflux (score: 1)
- Author: R John Lye <rjl6n@uva.pcmail.virginia.edu>
- Date: Wed, 5 Mar 97 07:27:13 EST
- I'm by no means an expert, but my understanding is that magnafluxing will only detect surface cracks. X-raying will detect internal flaws (if they're big enough and the operator is good enough at the
- /html/shop-talk/1997-03/msg00034.html (8,410 bytes)
- 3. Re: Magnaflux (score: 1)
- Author: pbw@chong.dseg.ti.com (Pat Willems (@chong))
- Date: Wed, 5 Mar 97 07:27:06 CST
- John Lye replied I won't say that I am an expert but I do make a living as a mechanical engineer analyzing structures (not engine internal components though). In a crank, fatigue cracks would start a
- /html/shop-talk/1997-03/msg00036.html (9,049 bytes)
- 4. Re: Magnaflux (score: 1)
- Author: Brian Kelley <bkelley@ford.com>
- Date: Wed, 05 Mar 1997 10:29:09 EST
- I believe every critical component in an aircraft engine has a rated service life, as required by the FAA. When you reach it, you throw it away. Check the factory manuals or ask a Real aircraft mech
- /html/shop-talk/1997-03/msg00038.html (8,653 bytes)
- 5. Re: Magnaflux (score: 1)
- Author: Berry Kercheval <kerch@parc.xerox.com>
- Date: Wed, 5 Mar 1997 11:47:32 PST
- The bible is AC 43.13, "Acceptable Methods, Techniques and Practices: Aircraft Inspection, Repair and Alterations.", published by the FAA and available at the pilot shops at most small airports or b
- /html/shop-talk/1997-03/msg00041.html (7,933 bytes)
- 6. Magnaflux (score: 1)
- Author: dave.williams@chaos.lrk.ar.us (Dave Williams)
- Date: Wed, 05 Mar 1997 15:59:00 -0500
- Probably okay. As far as I know you can't tell by looking at it. Eventually the rods, crank, or other components will fail due to fatigue, but it tends to be a rapid process - if you happened to Mag
- /html/shop-talk/1997-03/msg00042.html (8,473 bytes)
- 7. Re: Magnaflux (score: 1)
- Author: jibrooks@JUNO.COM (Jack I Brooks)
- Date: Wed, 05 Mar 1997 22:03:43 EST
- cracks are propagated to the surface. Anyone else know of one? __________________________________________________________________ John, Fatigue cracks start at the surface and work their way into th
- /html/shop-talk/1997-03/msg00045.html (8,604 bytes)
- 8. Re: Magnaflux (score: 1)
- Author: "Paul Hammarstedt" <wfme@mail.mc.net>
- Date: Wed, 5 Mar 1997 21:22:02 +0000
- Fatigue generally begins at the surface. Regards, Paul Paul Hammarstedt Crystal Lake, Illinois
- /html/shop-talk/1997-03/msg00046.html (7,987 bytes)
- 9. Re: Magnaflux (score: 1)
- Author: "W. R. Gibbons" <gibbons@northpole.med.uvm.edu>
- Date: Thu, 6 Mar 1997 13:27:15 -0500 (EST)
- This thread reminds me of an old movie, No Highway in the Sky, starring James Stewart as a "boffin" who calculates that the tail assembly will fall off a new airplane at x hours. This is just an inte
- /html/shop-talk/1997-03/msg00052.html (8,700 bytes)
- 10. Re: Magnaflux (score: 1)
- Author: Phil Ethier <ethier@freenet.msp.mn.us>
- Date: Thu, 6 Mar 1997 13:55:22 -0600 (CST)
- No, you do him a disservice. He was trying to convince everybody that the "Reindeer" was unsafe and needed a re-design. The tail section he had in his hanger under a stress test had "failed to fail"
- /html/shop-talk/1997-03/msg00053.html (8,740 bytes)
- 11. Re[2]: Magnaflux (score: 1)
- Author: "Dunst, Mordecai" <mdunst@smtplink.coh.org>
- Date: Thu, 06 Mar 97 15:53:03 pst
- Hi Mordy! 1) If an important piece of metal is "cracked-checked" and is found to be "o.k.". What is the certainty that it really is "o.k."? It depends what type of material and how it is checked. Mag
- /html/shop-talk/1997-03/msg00056.html (8,368 bytes)
- 12. Re: Magnaflux (score: 1)
- Author: BMcgu22954@aol.com
- Date: Fri, 7 Mar 1997 22:19:25 -0500 (EST)
- A magnafluxed piece from a company that's FAA approved should come with a certificate. Those that come from Joe magnafluxer probably will not. Die penetrant is also widely used. Bruce McGuire
- /html/shop-talk/1997-03/msg00061.html (8,384 bytes)
- 13. Re: Magnaflux (score: 1)
- Author: Berry Kercheval <kerch@parc.xerox.com>
- Date: Fri, 7 Mar 1997 22:40:42 PST
- Correct; this is usually a yellow tag attached to the part, that is then removed when the part is installed and then stapled to the the aircraft's logbook. Parts certified as passing inspection and
- /html/shop-talk/1997-03/msg00062.html (8,383 bytes)
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