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This study is a continuance of the preceding work by the author on the investigation of the dynamic behaviour of the breathing crack in the cantilever–type structures. Such structures are widely employed in the engineering applications including a blade attached to rotor in the turbomachinery bladed system. The level of damping arising from a breathing crack interface alters the tip deflection of the blade and hence difference in the time of arrival of each blade is ascertained in the blade tip timing (BTT) technique. Therefore, an accurate estimation of the coulomb friction - induced damping is required for the effective damage detection utilising BTT. In this work, damping arising from a breathing crack inside a dog–bone specimen (a representative model for cantilever–type structures) is quantified numerically and experimentally. Modes of vibration considered are bending and torsion modes which represent a crack operating in different combinations of Mode-I (opening), II (sliding) and III (tearing) behaviour. The dog – bone specimen is experimentally tested for varying excitation levels (ELs) and the damping levels obtained are then compared with the numerical results, where the dog – bone specimen model is subjected to the impulse excitation.