Fatigue life of 17-4PH H1150 bar
Fatigue life of 17-4PH H1150 bar
(OP)
Have to calculate a 17-4PH H1150 (bar) Kt = 3 / 4 lug fatigue life; unfortunately MMPDS-06 has the S/N curve for the H900, H1025 & H1100 but not for the H1150. If anyone could point me to a H1150 S/N curve source or confirm, if a newer edition of MMDPS has the H1150 S/N curve that would be greatly appreciated.
Thanks guys!
Artur
Thanks guys!
Artur
RE: Fatigue life of 17-4PH H1150 bar
My company can do the testing if you require it, but I suspect it's less expensive to find an alloy that has the data already available.
RE: Fatigue life of 17-4PH H1150 bar
Figure 3.5.1.5 Fatigue properties of smooth and notched specimens in air and brackish water at room temperature
17-4PH, 1-in. Plate
Condition H1150
Rotating cantilever beam, R = -1
Smooth
Notched
Air
Brackish Water
Fig. 3.5.3.2 Fatigue-crack growth rate as a function of stress-intensity-factor range with variations in melting practice, heat-treatment, and stress ratio (R) (Ref. 48)
Argon-Oxygen Melt Condition H1150
Regards, Wil Taylor
o Trust - But Verify!
o We believe to be true what we prefer to be true. [Unknown]
o For those who believe, no proof is required; for those who cannot believe, no proof is possible. [variation,Stuart Chase]
o Unfortunately, in science what You 'believe' is irrelevant. ["Orion", Homebuiltairplanes.com forum]
RE: Fatigue life of 17-4PH H1150 bar
Cheers,
Artur
RE: Fatigue life of 17-4PH H1150 bar
Many thanks,
Artur
RE: Fatigue life of 17-4PH H1150 bar
I have a copy of a ~20-YO ASMH Hdbk. The examples listed are not full extent of data for H1150 fatigue data. I am not comfortable copying/pasting that data [SN figures], here.
NOTE.
Several years ago the ASMH was handed-over to industry for maintenance and updates.... and has been renamed as Aerospace Structural Metals Database. Subscription costs are 'significant'.... however many libraries still have the older ASMH on shelves [or on-line].
In real terms the ASMD [ASMH] along with MMPDS... would replace a corporate-developed metals database/design handbook series with highly authoritative data recognized by the FAA and DoD.... assuming industry standards and practices for aerospace metals specifications and basic heat treatments, etc.
CINDAS https://cindasdata.com/products/asmd
1501 = ASMH designation for 17-4PH CRES, all forms.
other examples...
1309 = 347 & 348 CRES [all forms]
3203 = 2024 aluminum bare/wrought products
3222 = 7050 aluminum [all]
3505 = HM31A magnesium [all]
4103 = Inconel 718
Etc.
Regards, Wil Taylor
o Trust - But Verify!
o We believe to be true what we prefer to be true. [Unknown]
o For those who believe, no proof is required; for those who cannot believe, no proof is possible. [variation,Stuart Chase]
o Unfortunately, in science what You 'believe' is irrelevant. ["Orion", Homebuiltairplanes.com forum]
RE: Fatigue life of 17-4PH H1150 bar
Best regards,
Artur