9 fig 4 frf curvature energy damage index for a

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9 Fig. 4. FRF curvature energy damage index for a frequency range of 0-900 Hz. (a) Case 1 (b) Case 2 Further Fig.4 shows damage index amplitude increases in frequency range 0 to 900Hz for different damage cases but damaged beside element also having amplitude which affects the quantification of damage. Fig 5: FRF curvature energy damage index for a frequency range of 0-1280 Hz. (a) Case 1 (b) Case 2 Further increases the frequency range from 0 to 1280 Hz there is no localization for damage as shown in Fig 5 for different damage cases. The sensitivity of damage identification mainly depends on damage location. In this analysis case 1 is sensitive because damage location n mode displacement location. Fig. 5. FRF curvature energy damage index for a frequency range of 0-1280 Hz. (a) Case 1 (b) Case 2 Further increases the frequency range from 0 to 1280 Hz there is no localization for damage as shown in Fig. 5 for different damage cases. The sensitivity of damage identification mainly depends on damage location. In this analysis case 1 is sensitive because damage location n mode displacement location. 3.2 Influence of noise To find out the influence of adding the noise to the numerical data (noise is always present on experimen- tal data) it is decided to pollute our modal data with a multiplicative error of 15% of rms. Fig. 6 shows that this method is quite insensitive to noise for damage identification. WJMS email for subscription : [email protected]
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