The effects of voids in quasi-static indentation of resin-infused reinforced polymers | Zendy

Sisodia SM | Zendy; Bull DJ | Zendy; George AR | Zendy; Gamstedt EK | Zendy; Mavrogordato MN | Zendy; Fullwood DT | Zendy; Spearing SM | Zendy

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The effects of voids in quasi-static indentation of resin-infused reinforced polymers

Author(s) -

Sisodia SM,

Bull DJ,

George AR,

Gamstedt EK,

Mavrogordato MN,

Fullwood DT,

Spearing SM

Publication year - 2019

Publication title -

journal of composite materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.608

H-Index - 91

eISSN - 1530-793X

pISSN - 0021-9983

DOI - 10.1177/0021998319858024

Subject(s) - materials science , composite material , indentation , delamination (geology) , transverse plane , polymer , epoxy , thermosetting polymer , structural engineering , subduction , tectonics , engineering , paleontology , biology

The focus of this study is the influence of voids on the damage behaviour in quasi-static loading of resin-infused carbon fibre-reinforced polymers. Experimental results are presented for quasi-static loading in combination with high-resolution tomographic imaging and statistical analysis (homology of pores or voids and induced cracks). Three distinct mechanisms were observed to control delamination growth in the presence of sharp and blunt voids. Delamination cracks interact with the supporting yarns, especially in combination with air pockets trapped in the resin in the form of long, sharp voids. This resulted in crack growth that coalesces with delamination cracks from neighbouring yarn-voids during increased out-of-plane load–displacement, with almost no presence of intralaminar transverse cracks. This highlights the benefits and drawbacks of the supporting yarn during out-of-plane loading.

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