Etching part number in bulkhead

[hamblin10]

Might just be me but seems like a bad idea etching the part number into a load bearing structure.

 

[wirejock]

Etching

Might just be me but seems like a bad idea etching the part number into a load bearing structure.

Every spar and carry through has a serial etched. If it were a problem, Vans wouldn't do it.
That said, "do as they say, don't do as they do."
Sorry. My not so funny sense a humor.

 

[Brantel]

Not a problem as long as it is done with a vibratory pencil. Those produce a series of dots and not a contiguous line.

Vans has been doing this for a loooong time.

 

[terrye]

Every part of the fuselage of the Sikorsky S-61 helicopter I worked on had a part number etched (vibrating pencil) on it.

 

[Tommy123]

You're a aerospace engineer, do a stress analysis on it.

 

[MechaSteve]

Theoretically, this could make, that part of the spar, less prone to cracking.

Shot-peening (bead blasting with steel BBs) is used to treat the surface of turbine engine blades. It creates compressive residual stresses in the surface of the part.

The main determining factor would be total cross section reduction.