spline shaft material
spline shaft material
(OP)
I have been working with a high performance company. They are having a problem with shaft failure. They have been using 300m you know the material that you cant hardly find for aerospace because the race industery is buying it all up. Well the shafts are still failing, and they came to me to find a stronger material, does anyone have any ideas?





RE: spline shaft material
1. Reduce surface roughness
2. Remove residual tensile stresses
3. Impart residual compressive stresses (shot peening or roller burnishing)
4. Reduce stress intensity (larger radii, better blending, etc.)
RE: spline shaft material
RE: spline shaft material
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RE: spline shaft material
RE: spline shaft material
I agree with everything except for the characterization of the mentioned alloys as having low toughness". A VIM/VAR 300M alloy will have a plane-strain fracture toughness of ~ 66-77 MPa m0.5 when the tensile strength is ~ 1900 MPa. Similarly a 250 grade maraging steel will be ~ 70 MPa m0.5, while Aermet 100 will be in excess of 100 MPam0.5 at that tensile strength. My threshold for low toughness would probably be < 20 MPa m0.5.
RE: spline shaft material
We built a number of test stands (using splined shafts) from Maraging 250 and 300. While they handled overload very well they were sensitive to impulse and fatigue.
This is why I feel that the real problem may not be the parts strength.
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Rust never sleeps
Neither should your protection
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RE: spline shaft material
Aerospace Gear and Spline specialist
RE: spline shaft material
RE: spline shaft material
A100 is probably a good option, but without addressing the root cause you could just keep breaking more expensive shafts.
= = = = = = = = = = = = = = = = = = = =
Rust never sleeps
Neither should your protection
http://www.trent-tube.com/contact/Tech_Assist.cfm
RE: spline shaft material
RE: spline shaft material
RE: spline shaft material
RE: spline shaft material
Aerospace Gear and Spline specialist
RE: spline shaft material
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RE: spline shaft material
"Does anyone know what American material it compares to?"
You're the "Aerospace Gear and Spline Specialist working with a high performance company". . .
RE: spline shaft material
Aerospace Gear and Spline specialist
RE: spline shaft material
RE: spline shaft material