Table 3.
Uncertainty associated with LME cracking metrics from welds prepared using the selected and arbitrary cutting plane methods
| Cross-sectioning methodology | Degrees of freedom | Log normal median crack depth (μm) | Cracks per weld | Cracking index | |||
|---|---|---|---|---|---|---|---|
| Standard deviation | 95% confidence interval | Standard deviation | 95% confidence interval | Standard deviation | 95% confidence interval | ||
| Selected cutting plane | 60 | 4.0 | 1.0 | 2.8 | 2.2 | 0.091 | 0.024 |
| Arbitrary cutting plane | 23 | 6.8 | 2.7 | 2.4 | 2.0 | 0.063 | 0.027 |