Low-velocity impacts of thin reinforced concrete (RC) slabs are considered in accidental falling objects during building constructions. In such scenario, reinforcement bars may show resistance against perforation. If the effect perforation behavior RC can be evaluated, it allows more rational protection and construction planning. this study, an experimental numerical investigation has been pres...

All impact analyses performed so far for the composite plates, have treated central impacts. Furthermore, investigations on influences of the in-plane biaxial compression, tension, or tension-compression preloads on various responses of the low-velocity impact, especially the indentation, have not been performed so far. In the present research, a finite element formulation is presented for resp...

In this paper we investigate impact and compression after impact properties of plain weave carbon fiber sandwich composites. Impact tests were conducted on different sample types to obtain information about absorbed energy and maximum impact force. The different samples consisted of foam-filled and hollow honeycomb cores with four-layer carbon fiber facesheets on one or both sides. The impact a...