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. 2025 Mar 10;116:107298. doi: 10.1016/j.ultsonch.2025.107298

Table 4.

Detailed parameters of composite plates with different ply numbers.

Layer number n 15 10 6 3
Length a/mm 120.0 120.0 120.0 120.0
Width b/mm 75.0 75.0 75.0 75.0
Thickness c/mm 3.0 2.0 1.0 0.5
Mass M/g 48.0 33.1 15.1 6.2
Stiffness k/N/mm 310.1 91.9 11.5 1.4