Damage Detection on Sudden Stiffness Reduction Based on Discrete Wavelet Transform

<table class="table-group" width="800px"><tr class="fig-image" id="a"><td><img alt="807620.fig.0015a" src="https://static-preview.hindawi.com/articles/tswj/volume-2014/807620/figures/807620.fig.0015a.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(a) </b>Noise frequency range: 0~50 Hz</td></tr></table></td></tr><tr class="fig-image" id="b"><td><img alt="807620.fig.0015b" src="https://static-preview.hindawi.com/articles/tswj/volume-2014/807620/figures/807620.fig.0015b.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(b) </b>Noise frequency range: 0~100 Hz</td></tr></table></td></tr><tr class="fig-image" id="c"><td><img alt="807620.fig.0015c" src="https://static-preview.hindawi.com/articles/tswj/volume-2014/807620/figures/807620.fig.0015c.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(c) </b>Noise frequency range: 0~250 Hz</td></tr></table></td></tr></table>

<table>Detection results from contaminated acceleration responses (sinusoidal excitation).</table>

The Scientific World Journal

fig15

Figure 15

Figure 15: Damage Detection on Sudden Stiffness Reduction Based on Discrete Wavelet Transform 