000196747 001__ 196747
000196747 005__ 20181203023428.0
000196747 0247_ $$2doi$$a10.1016/j.compositesa.2013.09.014
000196747 022__ $$a1359-835X
000196747 02470 $$2ISI$$a000329264900010
000196747 037__ $$aARTICLE
000196747 245__ $$aPullout of rough multiwall carbon nanotubes: A parametric study
000196747 260__ $$aOxford$$bElsevier$$c2014
000196747 269__ $$a2014
000196747 300__ $$a10
000196747 336__ $$aJournal Articles
000196747 520__ $$aA finite element study of MWCNT pullout from a ceramic matrix with a rough fibre-matrix interface is presented. MWCNT pullout differs in several ways from pullout of solid, micro-scale fibres, and has not been studied before. Interfacial roughness, due to missing CNT walls and other fabrication defects, is represented as an axisymmetric sinusoidal fibre-matrix interface with Coulomb friction. We find roughness resists pullout and aids push-out of the fibre over different portions of the pullout process, so a cracked nanocomposite with multiple MWCNTs would experience both crack closing and opening stresses. The net average pullout stress due to fibre bundles is then quite low relative to peak values, reducing energy dissipation relative to expectations of simpler models. During pullout, significant stress concentrations develop that can cause premature fibre fracture. Our results indicate that utilising interface roughness is not an effective strategy to improve composite strength and toughness. (C) 2013 Elsevier Ltd. All rights reserved.
000196747 6531_ $$aNano-structures
000196747 6531_ $$aCeramic-matrix composites (CMCs)
000196747 6531_ $$aInterface/interphase
000196747 6531_ $$aFinite element analysis (FEA)
000196747 700__ $$aByrne, E. M.$$uUniv Limerick, Mat & Surface Sci Inst, Irish Ctr Composites Res, Dept Mech Aeronaut & Biomed Engn, Limerick, Ireland
000196747 700__ $$aMcCarthy, M. A.
000196747 700__ $$0246474$$aCurtin, W. A.$$g211624
000196747 773__ $$j56$$q93-102$$tComposites Part A-Applied Science And Manufacturing
000196747 909C0 $$0252513$$pLAMMM$$xU12614
000196747 909CO $$ooai:infoscience.tind.io:196747$$pSTI$$particle
000196747 917Z8 $$x222139
000196747 937__ $$aEPFL-ARTICLE-196747
000196747 973__ $$aEPFL$$rREVIEWED$$sPUBLISHED
000196747 980__ $$aARTICLE