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. 2025 Aug 21;15:30788. doi: 10.1038/s41598-025-15992-9

Table 2.

The initial imperfection measurement of test specimens and the comparison of experimental tests 42 with finite element tests and the direct strength method.

Specimen Initial Imperfection PEXP PFEM PAS/NZS PAS/NZS/ PEXP PFEM / PEXP
Local (δL) Distortional (δD)
mm kN
BU45-7-1 0.29 2.46 124 126 114 0.92 1.02
BU45-7-2 0.17 3 123 123 111 0.90 1.00
BU45-7-3 0.21 3.38 121 121 109 0.90 1.00
BU90-3-1 0.22 3.38 119 120 104 0.88 1.01
BU90-3-2 0.17 4.13 119 119 104 0.87 1.00
BU90-3-3 0.27 2.73 118 122 104 0.88 1.03
BU105-2-1 0.25 3.3 117 117 100 0.85 1.00
BU105-2-2 0.21 3.15 117 117 100 0.85 0.99
BU105-2-3 0.23 2.03 117 117 101 0.86 1.00
BU60-7-1 0.23 2 123 125 112 0.91 1.01
BU60-7-2 0.17 3.93 122 122 110 0.90 1.00
BU60-7-3 0.13 2.38 121 124 111 0.91 1.02
BU110-3-1 0.22 2.75 117 118 99 0.84 1.00
BU110-3-2 0.11 1.01 118 121 103 0.88 1.02
BU110-3-3 0.24 2.85 119 118 102 0.86 0.99
BU60-3-1 0.21 1.88 116 117 99 0.85 1.01
BU60-3-2 0.26 2.5 117 120 99 0.85 1.03
BU60-3-3 0.18 3.38 116 116 97 0.84 1.00
Average 0.875 1.008
S 0.026 0.013