Damage Detection in CFRP Plates Using Spectral Entropy

<table>Variation of <svg height="15.25" id="M22" style="vertical-align:-3.13504pt" version="1.1" viewbox="0 0 20.112499 15.25" width="20.112499" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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<g transform="matrix(.012,-0,0,-.012,13.712,15.187)"><path d="M384 0h-275v27q67 5 81.5 18.5t14.5 68.5v385q0 38 -7.5 47.5t-40.5 10.5l-48 2v24q85 15 178 52v-521q0 -55 14.5 -68.5t82.5 -18.5v-27z" id="x31"></path></g>
</svg> with attached mass. (a) Damage in position P1. (b) Damage in position P2. (c) Damage in position P3.</table>

Shock and Vibration

Damage Detection in CFRP Plates Using Spectral Entropy

Figure 5