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I run in this limit more often with respect to bushings. As a rule at at my current employer we don't bush holes in the S-T grain below 1.2 e/D. 7075-T6 is worse than 7249. The real driver behing a limit is the SCC threshold per ASTM G47. This allowable is 5ksi for 7075-T6511 is the S-T...

I made the move from an airline MRB engineer to OEM Stress analyst 5 years ago. I have been a contracte engineer for the past 2.5 years. I do miss working on real planes a little; but overall I would never go back. I repeat NEVER. As a stress analyst the pay and respect is far better. I was...

Does anyone know if there is a first oversized (1/64th over) for a MS21250 bolt? This is a 12 point head steel tension bolt. Nothing is referenced on the specification for oversized fasteners.

Bear in mind that per the FAR 25.625 the 1.15 factor applies to all checks (net section, etc.) in the fitting and is not just limited to the joint calcs. Also, joints that are not associated with a fitting (large lap splices, etc.) do not fall under the realm of this FAR. Some DER's; however...

Read the top level .bdf into patran, and then export an analysis deck from patran.

I have several years experience in composite and metal bonded repairs. In order to restore the load carrying capability of the face sheet and bond strength to the core, you must have an overlapped hot bonded repair. If you are outside the size limits of an injection repair per the SRM, you are...