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After 180\u00a0min, the bending stress decreases and creep displacement increases over time, with Ebalta nano-enhanced resin laminates with CNFs showing the best results. A strong dependence of creep behaviour and stress relaxation is obtained with the applied stress level. The results show that laminates produced with pure Sicomin resin increased creep displacement by 1%, for a bending stress of 200\u00a0MPa, and 2 times greater for the bending stress of 700\u00a0MPa. The viscoelastic behaviour of CFRP composites nano-enhanced with CNFs was accurately predicted by the Kohlrausch-Williams-Watts (KWW) model and Findley power law.<\/jats:p>","DOI":"10.1177\/07316844231203787","type":"journal-article","created":{"date-parts":[[2023,9,25]],"date-time":"2023-09-25T11:54:17Z","timestamp":1695642857000},"page":"1257-1271","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":9,"title":["Effect of carbon nanofibers on the viscoelastic response of carbon\/epoxy composites"],"prefix":"10.1177","volume":"43","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9026-5966","authenticated-orcid":false,"given":"P","family":"Santos","sequence":"first","affiliation":[{"name":"Department of Electromechanical Engineering, C\u2010MAST, University of Beira Interior, Covilh\u00e3, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2100-7223","authenticated-orcid":false,"given":"Ab\u00edlio 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