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Table 1 The b-value quantitative results (Colombo et al., 2003).

From: Investigation on Acoustic Emission Parameters due to Fatigue Damage of Concrete Beams with Variable Notched Depth

Range Description
1.0 < b-value < 1.2 Micro-crack dominant
1.2 < b-value < 1.7 Macro-crack constant
b-value > 1.7 Macro-crack opening