This study investigates the influence of the location of a wood failure in stakes upon elastic changes observed in beech specimens with the resonance vibration technique. Natural failures were simulated by artificially created defects at different locations of the test stake. The results indicate that the location of an attack in a stake is important for the measurement outcome. When the attack is located at far ends of a stake, the detected faults are underestimated. Higher losses of modulus of elasticity were recorded with notches in comparison to bore hole defects. The non-destructive vibration approach (dynamic MOE) applied in durability testing offers advantages compared to conventional static techniques.

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