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The effects of voids in quasi-static indentation of resin-infused reinforced polymers
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Mechanics. GKN Aerosp, SE-46181 Trollhattan, Sweden.
Univ Southampton, Fac Engn & Environm, Mat Res Grp, Southampton, Hants, England.
Brigham Young Univ, Mfg Engn Technol, Provo, UT 84602 USA.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Mechanics.ORCID iD: 0000-0002-0034-3703
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2019 (English)In: Journal of composite materials, ISSN 0021-9983, E-ISSN 1530-793X, Vol. 53, no 28-30, p. 4399-4410Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2019. Vol. 53, no 28-30, p. 4399-4410
Keywords [en]
Resin transfer moulding, CT analysis, porosity, damage mechanics
National Category
Applied Mechanics
Identifiers
URN: urn:nbn:se:uu:diva-395779DOI: 10.1177/0021998319858024ISI: 000487078400036OAI: oai:DiVA.org:uu-395779DiVA, id: diva2:1366211
Funder
Vinnova, 2009-01324Available from: 2019-10-28 Created: 2019-10-28 Last updated: 2019-10-28Bibliographically approved

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Sisodia, SanjayGamstedt, E. Kristofer

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