Table 3 Nominal stress fitting curve parameters of base metal
From: Unified Principal S–N Equation for Friction Stir Welding of 5083 and 6061 Aluminum Alloys
Statistical basis | Base metal 5083 | Base metal 6061 | ||
|---|---|---|---|---|
Cd | h | Cd | h | |
Mean | 949807.0 | 0.6251 | 33768.7 | 0.3938 |
+ 2σ | 1339127.8 | 52460.4 | ||
− 2σ | 673672.3 | 21736.8 | ||
+ 3σ | 1590066.7 | 65386.8 | ||
− 3σ | 567355.6 | 17439.6 | ||