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Table 6 Confidence intervals for each stress level used for both base metal and surfaced samples

From: Fatigue behavior of surfaced C45 steel

Material conditions

Stress levels (MPa)

Upper confidence level

Lower confidence level

Base metal

489.45

130,357

3463

414.15

167,055

127,344

Surfaced samples

489.45

84,759

47,120

414.15

248,743

120,616