Have read that Ty III hard anodize may reduce the fatigue life of some materials up to 50%. Would the fact that something (7050 T7) is shot peened, subseqently hard anodized, and then damaged through both the anodize, and compressive pre-stress shot peen be more succeptable to local area...
Little off subject, but having seen it in a design exactly what benefits could be obtained cold working holes, and then installing NAS9301 cherry max rivets in them? Personal opinion is due to the lower yield properties of the 5056 sleeve it is a waste of effort.
Thanks,
Skypunk
Thanks for the assistance. I have gotten my hands on a table from a study performed on Trivalent Chromium Coating, and Chromate Conversion Coatings in both Salt Spray, and 1 year Marine Environment Exposure. Both the Trivalent, and Chromate coatings perform quite well under 336 hours of Salt...
Have heard several arguements/discussions on the effectiveness of Alodine (Chromate conversion coating per, MIL-C-5541 Class 1A) as a final coating. Most indications are that Alodine is an excellent base coat, but needs an organic topcoat. Anyone know of any study data, or higher level...
Anyone have a quick sumation of what possible effects could be expected of the following. Aluminum forging shot peened with 200% coverage damaged appx .006 deep gouge appx 1" long .008" wide. Damaged area blended out 10/1(ish), and shot peen not replaced? Most allowables of surface material...
Thanks for your assistance, and corrections. More to the question. Would this be a significant concern in flight controls involving CRES slip fits inside of CRES press fits w/o protection i.e. dry.
Please correct me if I am on the wrong track. Ti and CRES develop their own oxidized surface somewhat comparable to chromate conversion of Aluminum. Correct? When you put CRES with CRES without paint, or sealant protection there is a tendancy to get repetitive in this process of self...
MIL-H-5440 hydraulic systems, design, and installation for aircraft may provide a great deal of answers.
MIL-W-5088 has considerations for clearance with electrical.
Should you elect to use aluminum brackets most common protection I have seen is last ply of composite stackup should...
Appologize for the vagueness. Repair is fill and fair 3/8 hole {full thickness} then drill 1/4 hole through and mount. Absurd??? Pathetic??? How about Engineer with a degree.
Would like to thank you guys for helping me with my sanity check. You all have reflected exactly my thoughts. No honeycomb, no doubler, no sandwich at all other than that provided by fitting, and nas1149 washer. My thoughts are that it is an excercise absurdity. Had to rub my eyes, take a...
Recently exposed to a repair (if one would want to call it that) involving filling/fairing a metal structure with adhesive EA934/Magnabond6398. Then drilling through said filled holes to mount a flight control bellcrank. Two of the four holes received this pasty repair. Dare I ask? Has...
