Table 2 Resonance frequencies obtained by experimental tests for Model 1 and Model 3
From: Experimental analyses of metal-composite bonded joints: damage identification
Mode | ω1[Hz] | ω2[Hz] | ω3[Hz] | ω4[Hz] | ω5[Hz] | ω6[Hz] | |
|---|---|---|---|---|---|---|---|
Model 1 | H 12 | 33.44 | 81.25 | 135.9 | 208.1 | 313.4 | 416.9 |
H 13 | 33.75 | 79.69 | 125.9 | 205.0 | 292.2 | 412.5 | |
Model 3 | H 12 | 33.13 | 84.38 | 139.1 | 211.9 | 318.1 | 423.1 |
H 13 | 33.13 | 81.88 | 124.1 | 212.5 | 296.3 | 418.8 | |
Δ (*) : H 12 | 0.93% | 3.85% | 2.35% | 1.83% | 1.50% | 1.49% | |
Δ (*) : H 13 | 1.84% | 2.75% | 1.43% | 3.66% | 1.40% | 1.53% | |