Use of Time- and Frequency-Domain Approaches for Damage Detection in Civil Engineering Structures

<table class="table-group" width="800px"><tr class="fig-image" id="a"><td><img alt="872492.fig.0011a" src="https://static-preview.hindawi.com/articles/sv/volume-2014/872492/figures/872492.fig.0011a.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(a) </b>Based on mode 1</td></tr></table></td></tr><tr class="fig-image" id="b"><td><img alt="872492.fig.0011b" src="https://static-preview.hindawi.com/articles/sv/volume-2014/872492/figures/872492.fig.0011b.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(b) </b>Based on mode 2</td></tr></table></td></tr></table>

<table>Damage localization in the RC slab for damage <svg height="15.8875" id="M102" style="vertical-align:-0.0pt" version="1.1" viewbox="0 0 27.4 15.8875" width="27.4" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,.062,13.688)"><path d="M624 398l-8 -50h-120l-40 -185h112l-8 -50h-115l-52 -239h-59l51 239h-148l-52 -239h-59l53 239h-126l9 50h128l41 185h-121l8 50h124l47 214h59l-48 -214h149l46 214h59l-47 -214h117zM439 348h-148l-40 -185h147z" id="x23"></path></g><g transform="matrix(.017,-0,0,-.017,11.571,13.688)"><path d="M412 140l28 -9q0 -2 -35 -131h-373v23q112 112 161 170q59 70 92 127t33 115q0 63 -31 98t-86 35q-75 0 -137 -93l-22 20l57 81q55 59 135 59q69 0 118.5 -46.5t49.5 -122.5q0 -62 -29.5 -114t-102.5 -130l-141 -149h186q42 0 58.5 10.5t38.5 56.5z" id="x32"></path></g>
<g transform="matrix(.012,-0,0,-.012,19.725,5.525)"><path d="M471 153q-22 -15 -61 -13q-25 31 -45.5 49.5t-56.5 41.5q4 -71 28 -134q-17 -33 -42 -46q-24 12 -42 46q24 63 28 134q-36 -23 -56.5 -41.5t-45.5 -49.5q-36 -2 -61 13q0 28 19 59q65 10 130 43q-65 33 -130 43q-19 31 -19 59q22 15 61 13q25 -31 45.5 -49.5t56.5 -41.5
q-4 71 -28 134q17 33 42 46q24 -12 42 -46q-24 -63 -28 -134q36 23 56.5 41.5t45.5 49.5q36 2 61 -13q0 -28 -19 -59q-65 -10 -130 -43q65 -33 130 -43q19 -31 19 -59z" id="x2217"></path></g>
</svg>.</table>

Shock and Vibration

fig11

Figure 11

Figure 11: Use of Time- and Frequency-Domain Approaches for Damage Detection in Civil Engineering Structures 