Hybrid effects in thin ply carbon/glass unidirectional laminates: Accurate experimental determination and prediction

Wisnom, Michael R; Czél, Gergely; Swolfs, Yentl; Jalalvand, Meisam; Gorbatikh, Larissa; Verpoest, Ignace

doi:10.1016/j.compositesa.2016.04.014

Cited by 115 publications

(103 citation statements)

References 28 publications

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“…These two values are significantly higher than the manufacturer's quoted 1.5% failure strain for T300 fibres [36] and 1.6% knee point fragmentation strain in another pseudo-ductile configuration with angle-ply blocks around the 0 plies [37]. This enhancement in the failure strain of the 0 carbon layer is due to the 'hybrid effect', which has recently been studied in UD thin-ply specimens [38] intervals. This is because the stress concentration due to fragmentation in one 0 carbon layer can more easily lead to failure in the other layer in this QI laminate with a thinner and lower stiffness separating sub-laminate compared to the other QI with 45 intervals.…”

Section: Comparison and Discussionmentioning

confidence: 53%

Orientation-dispersed pseudo-ductile hybrid composite laminates – A new lay-up concept to avoid free-edge delamination

Jalalvand

Fotouhi

Wisnom

2017

Composites Science and Technology

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a b s t r a c tMulti-Directional hybrid composites can suffer from free-edge delamination, a damage mode that doesn't exist in Uni-Directional hybrid composites and can hinder the pseudo-ductility that can be achieved with thin-ply hybrids. This paper presents a new lay-up concept called 'orientation-dispersed' laminates to avoid this mode of damage in quasi-isotropic hybrids. It is shown that the energy release rates at the free-edges of orientation-dispersed layups are significantly lower than those in 'orientationblocked' laminates. Finally, the experimental results from two quasi-isotropic layups with p/3 and p/4 intervals are presented showing a good pseudo-ductility with no free-edge delamination.

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Section: Comparison and Discussionmentioning

confidence: 53%

Orientation-dispersed pseudo-ductile hybrid composite laminates – A new lay-up concept to avoid free-edge delamination

Jalalvand

Fotouhi

Wisnom

2017

Composites Science and Technology

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“…For the ±60QI/0 and ±45QI/0 laminates, the nearby 0 glass ply has a significantly higher stiffness compared to the off-axis glass layers. So, when it is next to the fragmenting 0 carbon layer, the stress concentration at a single carbon fibre break would be lower as the glass ply can significantly contribute to carrying load around a subcritical cluster of broken fibres [21]. This explains the highest average pseudo-yield strain in the ±60QI/ 0 (1.80%) and the ±45QI/0 (1.90%) specimens.…”

Section: Hybrid Effectmentioning

confidence: 78%

“…Swolfs et al [20] reviewed the basic mechanisms causing the hybrid effect, with the most significant considered to be thermal residual stresses, altered failure development due to statistical effects on formation of clusters of fibre breaks and dynamic stress concentrations. Wisnom et al [21] used glass/carbon hybrid composites, rather than all carbon composites, to measure the strain to failure of the baseline carbon plies more accurately, to reduce the variability typically obtained using conventional unidirectional tests and avoid the high values for the hybrid effect values when using these tests as the baseline [9e11]. This method addressed the difficulty in measuring the strain to failure due to stress concentrations at the load introduction regions.…”

Section: Introductionmentioning

confidence: 99%

High performance quasi-isotropic thin-ply carbon/glass hybrid composites with pseudo-ductile behaviour in all fibre orientations

Fotouhi

Jalalvand

Wisnom

2017

Composites Science and Technology

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a b s t r a c tThis study exploits the potential of thin-ply carbon/glass hybrid laminates to generate high performance Quasi-Isotropic (QI) composite plates that show pseudo-ductility in all fibre orientations under tensile loading, overcoming the inherent brittleness of conventional composites. Two types of QI lay-ups with 45 and 60 intervals, i.e. [45/90/-45/0] and [60/-60/0], were used to fabricate novel architectures of a QI T300-carbon laminate sandwiched between the two halves of a QI S-glass laminate. The fabricated plates were then loaded in all their fibre orientations. The laminates were designed by choosing an appropriate ratio of the carbon thickness to the laminate thickness using a robust analytical damage mode map. The experimental results verified the analytical predictions and showed a desirable pseudo-ductile failure in all the fibre orientations. Microscope images taken through the laminates thickness showed fragmentations (fibre fractures in the carbon layer) appearing only in the 0 carbon plies. A hybrid effect was observed, with an increase in strain and stress to failure of the carbon fibres, which was found to be dependent on the stiffness of the plies separating the 0 carbon plies and the plies adjacent to the 0 carbon plies. Altering the stacking sequence changes the stiffness of the separator and adjacent plies, therefore, leads to changes in the pseudo-ductile characteristics such as the initiation and final failure strains.

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“…By using intra-ply/inter-ply hybridization (PP/IL1) increased the bending strength as 19.4% and 17.2% compared to non-hybrid PP/CC and PP/GC composites, respectively. It could be caused by the constraint from the intra-ply and interply E-glass fibers that prevent carbon fiber breakages and formed a considerable hybridization effect due to the delay in failure of the carbon fibers [39].…”

Section: Bending Strengthmentioning

confidence: 99%

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2019

Industria Textila

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MATEJA KERT, INES BESEDIČ, ČRTOMIR PODLIPNIK Influența structurii colorantului și a temperaturii asupra adsorbției coloranților acizi pe tricoturile din poliamidă 6 3-8 NORINA POPOVICI, CAMELIA MORARU, IRENA MUNTEANU Relația dintre venituri și productivitatea muncii în industria textilă 9-14 SABRI HALAOUA, ZOUHAIER ROMDHANI, ABDELMAJID JEMNI Efectul parametrilor țesăturilor asupra proprietăților termice ale acestora 15-20 OLIVERA ŠAUPERL, JULIJA VOLMAJER VALH, LIDIJA FRAS ZEMLJIČ, JASNA TOMPA Textile funcționalizate pe bază de psyllium și substanță proteică coloidală în combinație cu extract de coada calului, pentru cosmetică 21-24 RIAZ BAIG, DILSHAD HUSSAIN, MUHAMMAD NAJAM-UL-HAQ, ABDUL WAQAR RAJPUT, RANA AMJAD Soluție ecologică pentru vopsirea țesăturilor din bumbac utilizând trei mordanți organici în coloranți reactivi 25-29 AYDA BAFFOUN Studiu comparativ între două tipuri de electroliți utilizați în vopsirea cu coloranți reactivi a bumbacului 30-36 UMIT HALIS ERDOGAN, FIGEN SELLI, HICRAN DURAN Reciclarea celulozei din deșeuri de fibre vegetale pentru aplicații industriale sustenabile 37-41 CHENG WANG, RONGHUAN HAN, LIXIA HU, FUMEI WANG Cercetare de bază asupra reziduurilor de știuleți de porumb ca material de filare al fibrei Lyocell 42-47 NICOLAE DIACONU, ANDREEA ROXANA UNGUR (POPESCU), MARIN SILVIU NAN, DANUT GRECEA, OLIMPIU STOICUTA, MARIUS RAZVAN POPESCU Cercetări privind realizarea unui sistem de monitorizare meteorologică pentru creșterea eficienței în execuția și exploatarea instalațiilor solare și pentru reducerea poluării mediului 48-56 MÜGE DURSUN, YAVUZ ŞENOL, ENDER YAZGAN BULGUN, TANER AKKAN Predicția performanței de protecție termică pe baza rețelei neurale a țesăturilor cu trei straturi pentru îmbrăcămintea pentru pompieri 57-64 GAYE YOLACAN KAYA Rezistența la încovoiere a compozitelor termoplastice hibride intra-strat/inter-strat 65-75 MARIAN-CATALIN GROSU, ALEXANDRU ALEXAN Structuri textile neconvenționale cu destinație tehnică, proiectate și dezvoltate la S.C. Cora Calitatea aerului din interiorul muzeelor și conservarea operelor de artă din materiale textile. Studiu de caz: Casa-muzeu Sălacea, România 88-93 DASARATHAN KAMALRAJ, VENKATRAMAN SUBRAMANIAM Valabilitatea ecuației lui Washburn în cazul țesăturii din poliester tratate cu sericină 94-97Editatã în 6 nr./an, indexatã ºi recenzatã în:

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Hybrid effects in thin ply carbon/glass unidirectional laminates: Accurate experimental determination and prediction

Cited by 115 publications

References 28 publications

Orientation-dispersed pseudo-ductile hybrid composite laminates – A new lay-up concept to avoid free-edge delamination

Orientation-dispersed pseudo-ductile hybrid composite laminates – A new lay-up concept to avoid free-edge delamination

High performance quasi-isotropic thin-ply carbon/glass hybrid composites with pseudo-ductile behaviour in all fibre orientations

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