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The composite was additionally reinforced with a small concentration of titanium diboride nanoparticles, TiB<jats:sub>2<\/jats:sub>, to study its effect on impact resistance. Sandwich composite samples were fabricated by impregnating the aramid fabrics and honeycomb in subsequent layers with the system epoxy\/PVB\/TiB<jats:sub>2<\/jats:sub>. Their mechanical behavior was examined through three-point bending test, Charpy impact test, and compressive test. The chemical reaction between PVB and epoxy resin, and chemical inertness between the nanoparticles and the other constituents were confirmed by FTIR analysis. The flexural strength and stiffness increased by 27.6% and 62.5%, respectively, in the presence of TiB<jats:sub>2<\/jats:sub> reinforcement. Impact tests showed increase of 104% in impact toughness in the case of samples with TiB<jats:sub>2<\/jats:sub>. Nano TiB<jats:sub>2<\/jats:sub> did not increase compressive strength of the proposed sandwich structure, but it improved its stiffness and reduced the permanent deformation. The achieved improvements in mechanical resistance make this new composite structure a promising candidate for automotive, airspace, naval, civil engineering, sports equipment industry, and for use in defense technologies. <\/jats:p>","DOI":"10.1177\/26349833241257960","type":"journal-article","created":{"date-parts":[[2024,7,21]],"date-time":"2024-07-21T05:13:25Z","timestamp":1721538805000},"update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":1,"title":["Impact resistance of aramid honeycomb tandem sandwich composites reinforced with TiB<sub>2<\/sub>"],"prefix":"10.1177","volume":"33","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9568-5556","authenticated-orcid":false,"given":"Damjan","family":"\u010cekerevac","sequence":"first","affiliation":[{"name":"University of Coimbra, Institute for Sustainability and Innovation in Structural Engineering, Coimbra, Portugal"}]},{"given":"Danica","family":"Baji\u0107","sequence":"additional","affiliation":[{"name":"Military Technical Institute, Belgrade, Serbia"}]},{"given":"Sr\u0111a","family":"Perkovi\u0107","sequence":"additional","affiliation":[{"name":"Military Technical Institute, Belgrade, Serbia"}]},{"given":"Bojana","family":"Fidanovski","sequence":"additional","affiliation":[{"name":"Military Technical Institute, Belgrade, Serbia"}]},{"given":"Jelena","family":"Marinkovi\u0107","sequence":"additional","affiliation":[{"name":"Military Technical Institute, Belgrade, Serbia"}]},{"given":"Vesna","family":"Pejovi\u0107","sequence":"additional","affiliation":[{"name":"Military Technical Institute, Belgrade, Serbia"}]},{"given":"Constan\u00e7a","family":"Rigueiro","sequence":"additional","affiliation":[{"name":"Polytechnic Institute of Castelo Branco, Institute for Sustainability and Innovation in Structural Engineering, Castelo Branco, Portugal"}]},{"given":"Eduardo","family":"Pereira","sequence":"additional","affiliation":[{"name":"University of Minho, Institute for Sustainability and Innovation in Structural Engineering, Guimar\u00e3es, Portugal"}]},{"given":"Aldina","family":"Santiago","sequence":"additional","affiliation":[{"name":"University of Coimbra, Institute for Sustainability and Innovation in Structural Engineering, Coimbra, Portugal"}]}],"member":"179","published-online":{"date-parts":[[2024,7,20]]},"reference":[{"key":"bibr1-26349833241257960","doi-asserted-by":"publisher","DOI":"10.1016\/j.matdes.2012.05.023"},{"key":"bibr2-26349833241257960","doi-asserted-by":"publisher","DOI":"10.17531\/ein.2015.3.12"},{"key":"bibr3-26349833241257960","doi-asserted-by":"publisher","DOI":"10.1016\/j.compositesb.2020.108090"},{"key":"bibr4-26349833241257960","doi-asserted-by":"publisher","DOI":"10.1016\/j.ijimpeng.2018.07.017"},{"key":"bibr5-26349833241257960","doi-asserted-by":"publisher","DOI":"10.1016\/j.compstruct.2018.06.027"},{"key":"bibr6-26349833241257960","doi-asserted-by":"publisher","DOI":"10.1016\/j.compstruct.2016.09.029"},{"key":"bibr7-26349833241257960","doi-asserted-by":"publisher","DOI":"10.1201\/9781420005981"},{"issue":"3","key":"bibr8-26349833241257960","first-page":"21","volume":"38","author":"Tanner D","year":"1986","journal-title":"J Met"},{"issue":"1","key":"bibr9-26349833241257960","first-page":"1561","volume":"5","author":"P. 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