Issue 74

O. Staroverov et alii, Fracture and Structural Integrity, 74 (2025) 358-372; DOI: 10.3221/IGF-ESIS.74.22

4. Quasi-static compression of specimens after impact (performed under conditions similar to those described in step 1) with determination of residual strength F CAI (ASTM D7137).

a

b

c d Figure 1: Test systems: Instron 5882 system (a), specimen in the device preventing buckling during compression (b), Instron CEAST 9350 system (c), specimen in the support stand with clamping devices for impact testing (d)

Impact energy E imp , J

Parameter

10

15

20

30

35

40

50

60

75

100

Weight, kg

5.048

5.048

5.048

5.048

5.048

5.048

10.048

10.048

10.048

15.048

Velocity, m/s

1.99

2.44

2.84

3.45

3.72

3.98

3.15

3.46

3.86

3.65

Height, m

0.202

0.303

0.411

0.607

0.705

0.808

0.506

0.610

0.760

0.679

Table 1: Impact parameters

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