PSI - Issue 28

Haibao Liu et al. / Procedia Structural Integrity 28 (2020) 106–115 Liu H et al./ Structural Integrity Procedia 00 (2020) 000–000

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Fig. 8. Damage maps obtained from the composites impacted by the round-nosed steel (RNS) and the flat-faced steel (FFS) impactors at impact energy of 15 J. ( The 0 o fibre direction is indicated. Results from three replicate tests are shown. )

Some key experimental results, including the maximum load, maximum displacement, duration time of the impact event and damage area, obtained from the composite specimens tested at an impact velocity of 2.40 m.s -1 , and an associated impact energy of 15 J, are compared in Table 2. Table 2. Comparison of some key results obtained from the experimental studies using the round-nosed steel (RNS) and the flat-faced steel (FFS) impactors at an impact energy of 15 J (i.e. at an impact velocity of 2.40 m.s -1 ).

Maximum load (kN)

Duration time (ms)

Maximum displacement (mm)

Area of damage (mm 2 )

Impactor type

Round-nosed steel (RNS) Flat-faced steel (FFS)

4.7 7.1

6.0 4.7

6.7 5.8

1180 1060