Review Article

Nondestructive Damage Assessment of Composite Structures Based on Wavelet Analysis of Modal Curvatures: State-of-the-Art Review and Description of Wavelet-Based Damage Assessment Benchmark

Figure 3

Impactors with rounded ends: (a) R17, (b) R14, (c) R11, (d) R8, and (e) R5 mm; impactors: (f) with a flat end ø34 mm, (g) with a flat end ø19 mm, (h) with the conic end, and (i) with the arched end; impactors with immersed stones: (j) with flat impact surface, (k) with rough impact surface, (l) edge-ended, (m) vertex-ended, and (n) angle-oriented vertex-ended.