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Table 2 Comparison of ξavg and \(\overline{\kappa }\) for Specimen #3 (σ = 1, ϑ = − 2.3)

From: A Comparative Study on Asperity Peak Modeling Methods

Correlation length Method ξavg Percent variation \(\overline{\kappa }\) Percent variation
10 Three-point definition 0.5589 0 1.2285 0
Spectral moment approach 1.0816 93.52%↑ 1.3519 10.04%↑
100 Three-point definition 0.1977 0 1.1205 0
Spectral moment approach 0.3493 76.68%↑ 1.2617 12.60%↑