Calculate SN curve parameters for air, seawater with cathodic protection and free corrosion in seawater (DNVGL-RP-C203 section 2.4 tables 2-1, 2-2 and 2-3). The values for loga1, loga2, and the transition point (N* and S*) include the temperature derating factor (DNVGL-RP-C203 section 1.2.2). Use the Result Table option to display the results for all curves.
Tool Input
- jointtype : Joint Or Material Type
- csntype : SN Curve Type
- walltype : Weld Joint Type
- tru : User Defined Reference Thickness
- kfactype : Thickness Exponent Type
- ku : User Defined Thickness Exponent
- dfftype : Design Fatigue Factor Type
- DFFu : User Defined Design Fatigue Factor
- ratype : Forging Surface Roughness Type
- temptype : Temperature Derating Type
- Tu : User Defined Design Temperature
- systype : System Effect Factor Type
- Rsu : User Defined System Effect Log Factor
- tn : Wall Thickness
Tool Output
- DFF : Design Fatigue Factor
- N* : Cycles At Transition
- NF : Fatigue Cycles Limit
- Rm : Material Thickness Derating Log Factor
- Rs : System Effect Log Factor
- Rt : Temperature Derating Log Factor
- S* : Stress At Transition
- SCF : Embedded SCF
- SF : Fatigue Stress Limit
- k : k Exponent
- loga1 : Log Intercept a1
- loga2 : Log Intercept a2
- m1 : Exponent m1
- m2 : Exponent m2
- tref : Reference Thickness