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- Author:
- Li, Wen; Chen, Wei; Tang, Liqun; Jiang, Zhenyu; Huang, Peiyan
- Source:
- Composites 2019 v.121 pp. 45-55
- ISSN:
- 1359-835X
- Subject:
- composite materials; models; polymers; prediction; shear strength; tensile strength
- Abstract:
- ... Fiber bundle composites (FBCs), prepared by embedding a piece of fiber bundle in polymer matrix, can imitate the part in unidirectional FRP laminates which fails under transverse tension or interlaminar shear. However, there is a remarkable discrepancy between the results obtained in the tests of FBCs and corresponding standard tests of laminates. This paper explores the reasons for the observed g ...
- DOI:
- 10.1016/j.compositesa.2019.03.009
-
https://dx.doi.org/10.1016/j.compositesa.2019.03.009
- Author:
- Wang, Zhengzhou; Huang, Zhenyu; Li, Xiaoyan; Zhou, Jian-an
- Source:
- Composites 2019 v.121 pp. 180-188
- ISSN:
- 1359-835X
- Subject:
- Fourier transform infrared spectroscopy; X-ray diffraction; calorimeters; composite materials; flame retardants; foams; graphene; heat; oxygen; phosphates; poly(vinyl chloride); scanning electron microscopy; smoke; strength (mechanics); thermal stability; transmission electron microscopy
- Abstract:
- ... A nano graphene oxide/α-zirconium phosphate (α-ZrP) hybrid (GOZP) was synthesized by an in-situ technique, and characterized by XRD, FTIR, SEM, TEM, etc. Rigid polyvinyl chloride (RPVC) foams containing GOZP exhibit high mechanical, flame retardant and smoke suppressive properties. The compressive and flexural strengths of sample RPVC/GOZP3 with 3 phr GOZP increase by 28.6% and 45.2%, respectively ...
- DOI:
- 10.1016/j.compositesa.2019.03.021
-
https://dx.doi.org/10.1016/j.compositesa.2019.03.021
- Author:
- Chen, Zhengyan; Yan, Hongxia; Guo, Liulong; Li, Lin; Yang, Pengfei; Liu, Biao
- Source:
- Composites 2019 v.121 pp. 18-27
- ISSN:
- 1359-835X
- Subject:
- composite materials; dispersibility; friction; microstructure; nanosheets; polyethyleneimine; polymerization
- Abstract:
- ... Bismaleimide (BMI) composites reinforced with novel polyamide-type cyclophosphazene functionalized rGO/WS2 were successfully fabricated in this paper. RGO/WS2 was firstly functionalized with polyphosphazene (poly (cyclophosphazene-co-branched polyethylenimine)) (PHbP) by a simple precipitation polymerization approach. The microstructure and morphology of as-prepared PHbP@rGO/WS2 were characterized ...
- DOI:
- 10.1016/j.compositesa.2019.03.003
-
https://dx.doi.org/10.1016/j.compositesa.2019.03.003
- Author:
- Rev, Tamas; Jalalvand, Meisam; Fuller, Jonathan; Wisnom, Michael R.; Czél, Gergely
- Source:
- Composites 2019 v.121 pp. 376-385
- ISSN:
- 1359-835X
- Subject:
- acoustics; civil engineering; composite materials; digital images; mechanical testing; monitoring
- Abstract:
- ... A novel, purpose-designed, thin interlayer glass/carbon-epoxy hybrid composite sensor concept is presented here that can be used for structural health monitoring (SHM), offering potential for safer operation in service. The hybrid composite sensors indicate the overload of a structure by exhibiting a change in their appearance when loaded in tension over a predefined strain value. The sensors can ...
- DOI:
- 10.1016/j.compositesa.2019.03.005
-
https://dx.doi.org/10.1016/j.compositesa.2019.03.005
- Author:
- Thomason, James L.; Nagel, Ulf; Yang, Liu; Bryce, David
- Source:
- Composites 2019 v.121 pp. 56-63
- ISSN:
- 1359-835X
- Subject:
- adhesion; composite materials; epoxides; glass fibers; mechanical testing; polypropylenes; temperature; thermal degradation; thermal stability
- Abstract:
- ... Although not fully understood, it is well recognized that optimal working of glass fibre sizings is necessary to maximize the performance of glass fibre reinforced polymer composites. It is important that the organic components in such sizings continue to function after exposure to the high temperatures often experienced during composite processing. This study presents the results on the thermal s ...
- DOI:
- 10.1016/j.compositesa.2019.03.013
-
https://dx.doi.org/10.1016/j.compositesa.2019.03.013
- Author:
- Thomson, Daniel; Cui, Hao; Erice, Borja; Petrinic, Nik
- Source:
- Composites 2019 v.121 pp. 213-222
- ISSN:
- 1359-835X
- Subject:
- composite materials; compression strength; mechanical stress; polymers
- Abstract:
- ... Longitudinal compression testing of unidirectional FRP laminates remains a challenge due to the difficulty in applying high compressive loads without stress concentrations and boundary effects leading to premature failure. This work aims to critically evaluate different specimen designs and laminate configurations, cross-ply in particular, for the determination of longitudinal compression properti ...
- DOI:
- 10.1016/j.compositesa.2019.03.034
-
https://dx.doi.org/10.1016/j.compositesa.2019.03.034
- Author:
- Mencattelli, Lorenzo; Tang, Jun; Swolfs, Yentl; Gorbatikh, Larissa; Pinho, Silvestre T.
- Source:
- Composites 2019 v.121 pp. 341-352
- ISSN:
- 1359-835X
- Subject:
- carbon fibers; composite materials; energy; engineering; microstructure; polypropylenes
- Abstract:
- ... In this work, we investigate the toughness of an inter-layer Self-Reinforced Polypropylene/Carbon Fibre Polypropylene (SRPP/CFPP) cross-ply hybrid composite and devise strategies to improve two aspects of its damage tolerance: (i) increasing the energy dissipation capability and (ii) enhancing the impact damage tolerance. To this end, we introduced discontinuities in the form of laser-cuts across ...
- DOI:
- 10.1016/j.compositesa.2019.03.028
-
https://dx.doi.org/10.1016/j.compositesa.2019.03.028
- Author:
- Wang, Lidong; Xu, Peng; Peng, Xiongqi; Zhao, Kexin; Wei, Ran
- Source:
- Composites 2019 v.121 pp. 28-35
- ISSN:
- 1359-835X
- Subject:
- carbon fibers; composite materials; diaphragm; epoxides; friction; manufacturing; mathematical models; temperature
- Abstract:
- ... Understanding the inter-ply slipping behaviors of uncured prepregs is fundamental for avoiding defects such as wrinkling during manufacturing of large-scale composite parts in hot diaphragm forming. This work investigates the inter-ply slipping behaviors in hot diaphragm preforming of carbon fiber/epoxy prepregs. A home-made testing system is used to characterize the inter-ply slipping behaviors o ...
- DOI:
- 10.1016/j.compositesa.2019.03.012
-
https://dx.doi.org/10.1016/j.compositesa.2019.03.012
- Author:
- Yamamoto, Go; Onodera, Miho; Koizumi, Keita; Watanabe, Jun; Okuda, Haruki; Tanaka, Fumihiko; Okabe, Tomonaga
- Source:
- Composites 2019 v.121 pp. 499-509
- ISSN:
- 1359-835X
- Subject:
- composite polymers; epoxides; finite element analysis; prediction; simulation models; tensile strength
- Abstract:
- ... The tensile strengths of unidirectional carbon fiber-reinforced plastic (CFRP) were predicted by using a spring element model that considers the surface stress concentration on fibers caused by a fracture site in an adjacent fiber. The surface stress concentration on the fibers was experimentally evaluated by implementing multi-fiber fragmentation tests in conjunction with a spring element model s ...
- DOI:
- 10.1016/j.compositesa.2019.04.011
-
https://dx.doi.org/10.1016/j.compositesa.2019.04.011
- Author:
- Yuan, Zun; Li, Weihang; Li, Chengjie; Ye, Lin
- Source:
- Composites 2019 v.121 pp. 254-264
- ISSN:
- 1359-835X
- Subject:
- crosslinking; graphene; nanocomposites; rubber; stress relaxation; tensile strength; zinc
- Abstract:
- ... EPDM/Graphene (GN) - Zinc dimethacrylate (ZDMA) nano-composite was prepared by in situ formation of ZDMA in GN layers. Both EPDM and ZDMA molecules were confirmed to intercalate into GN layers with strong interfacial interactions and high efficiency. Compared with neat EPDM, addition of GN-ZDMA resulted in 291% increase of tensile strength and 48% increase of elongation at break, superior to that ...
- DOI:
- 10.1016/j.compositesa.2019.03.039
-
https://dx.doi.org/10.1016/j.compositesa.2019.03.039
- Author:
- Cech, Vladimir; Marek, Ales; Knob, Antonin; Valter, Jan; Branecky, Martin; Plihal, Petr; Vyskocil, Jiri
- Source:
- Composites 2019 v.121 pp. 244-253
- ISSN:
- 1359-835X
- Subject:
- adhesion; coatings; composite materials; cost effectiveness; glass fibers; polyesters; polymerization; shear strength; vapors
- Abstract:
- ... Plasma-enhanced chemical vapor deposition (PECVD) is a cost-effective and green process of plasma polymer synthesis that can be used as a gentle but powerful tool for the surface modification of fibers and retains their bulk properties. This paper introduces the notion of a compact and modular device consisting of low-pressure reactor segments that have a specialized function and are adapted for t ...
- DOI:
- 10.1016/j.compositesa.2019.03.036
-
https://dx.doi.org/10.1016/j.compositesa.2019.03.036
- Author:
- Sang, Zhen; Ke, Kai; Manas-Zloczower, Ica
- Source:
- Composites 2019 v.121 pp. 207-212
- ISSN:
- 1359-835X
- Subject:
- carbon; carbon nanotubes; electrical conductivity; exercise; muscles; polymer nanocomposites; polyurethanes; thermoplastics
- Abstract:
- ... Electrically conductive thermoplastic polyurethane (TPU) composites with carbon nanofillers have potential applications in strain sensors. However, it is challenging to simultaneously achieve low percolation threshold, good electrical conductivity and high strain sensitivity especially in melt-mixed TPU-carbon filler nanocomposites. Here, we report on using branched carbon nanotubes known as carbo ...
- DOI:
- 10.1016/j.compositesa.2019.03.007
-
https://dx.doi.org/10.1016/j.compositesa.2019.03.007
- Author:
- Yalcinkaya, M. Akif; Sozer, E. Murat; Altan, M. Cengiz
- Source:
- Composites 2019 v.121 pp. 353-364
- ISSN:
- 1359-835X
- Subject:
- composite materials; epoxides; glass; manufacturing; shear strength
- Abstract:
- ... Applying external pressure on the vacuum bag in heated-Vacuum Assisted Resin Transfer Molding (heated-VARTM) is a new approach for manufacturing high quality composite laminates with minimal voids. The present study focuses on the effects of external pressure and resin flushing on the microstructural features of the laminates, including spatial variation and size distribution of the voids as well ...
- DOI:
- 10.1016/j.compositesa.2019.03.040
-
https://dx.doi.org/10.1016/j.compositesa.2019.03.040
- Author:
- Li, Jianchao; Zhang, Xuexi; Geng, Lin
- Source:
- Composites 2019 v.121 pp. 487-498
- ISSN:
- 1359-835X
- Subject:
- aluminum; annealing; composite materials; graphene; heat treatment; microstructure; models; temperature; tensile strength
- Abstract:
- ... Interfacial bonding state between graphene nano-platelets (GNP) and aluminum strongly influences the strengthening efficiency of GNP/Al composites. Here, 2.0 wt% GNP/Al composites were annealed at various temperatures to explore the effects of heat treatment on microstructure, mechanical properties and strengthening behavior of graphene. Interfacial reaction between GNP and Al occurred in composit ...
- DOI:
- 10.1016/j.compositesa.2019.04.010
-
https://dx.doi.org/10.1016/j.compositesa.2019.04.010
- Author:
- Harder, Sergej; Schmutzler, Henrik; Hergoss, Philipp; Freese, Jens; Holtmannspötter, Jens; Fiedler, Bodo
- Source:
- Composites 2019 v.121 pp. 299-307
- ISSN:
- 1359-835X
- Subject:
- X-ray photoelectron spectroscopy; carbon fibers; chemical composition; composite materials; milling; nitrogen; oxygen; polymers; scanning electron microscopy
- Abstract:
- ... The bonded scarf joint is a common design for the repair of carbon fibre reinforced polymer (CFRP). Surface treatment is an essential factor for the performance of such joints. Infrared (IR) laser surface treatment is of particular interest, as it has the potential for a fast and automatable process. The effect of the IR laser surface treatment on the morphology was investigated by scanning electr ...
- DOI:
- 10.1016/j.compositesa.2019.02.025
-
https://dx.doi.org/10.1016/j.compositesa.2019.02.025
- Author:
- Sasikumar, A.; Trias, D.; Costa, J.; Blanco, N.; Orr, J.; Linde, P.
- Source:
- Composites 2019 v.121 pp. 232-243
- ISSN:
- 1359-835X
- Subject:
- aircraft; composite materials; impact load; impact strength
- Abstract:
- ... There is a lack of research available on how thin laminates respond to impact and post impact loads, even though thin structures are used in present-day aircrafts. This experimental paper employs thick, standard and thin uni-directional plies to investigate the effect ply thickness has on thin laminates on their impact and compression after impact (CAI) response. Further, we propose two hybrid lam ...
- DOI:
- 10.1016/j.compositesa.2019.03.022
-
https://dx.doi.org/10.1016/j.compositesa.2019.03.022
- Author:
- Saenz-Castillo, D.; Martín, M.I.; Calvo, S.; Rodriguez-Lence, F.; Güemes, A.
- Source:
- Composites 2019 v.121 pp. 308-320
- ISSN:
- 1359-835X
- Subject:
- composite materials; engineering; mechanical properties; microscopy; porosity; processing technology; quality control; temperature; thermoplastics; ultrasonics
- Abstract:
- ... Several consolidation cycles were performed to study the impact of processing parameters on void content, ultrasonic NDT and mechanical performance of CF/PEEK composites. A series of [+45/−45]4S laminates were manufactured by out-of-autoclave technologies including vacuum bag only, hot-press, and automatic lay-up with in-situ consolidation. A range of porosity between 0 and 19% of void content was ...
- DOI:
- 10.1016/j.compositesa.2019.03.035
-
https://dx.doi.org/10.1016/j.compositesa.2019.03.035
- Author:
- Liang, Jiyong; Gu, Yizhuo; Bai, Ming; Wang, Shaokai; Li, Min; Zhang, Zuoguang
- Source:
- Composites 2019 v.121 pp. 289-298
- ISSN:
- 1359-835X
- Subject:
- carbon fibers; composite materials; electromagnetic interference; mixing; polyacrylonitrile; surface area
- Abstract:
- ... Three types of short-chopped carbon fibers (SCF), including polyacrylonitrile based T300, M40J and pitch-based XN-90-60s, were used to prepare SCF felts by wet-laid method with hydroxyethylcellulos as adhesive. Electromagnetic interference shielding effectiveness (EMI SE) in X band was investigated using waveguide method. It is found that stirring treatment leads to higher damaging degree of XN90 ...
- DOI:
- 10.1016/j.compositesa.2019.03.037
-
https://dx.doi.org/10.1016/j.compositesa.2019.03.037
- Author:
- Zheng, Xiru; Kim, Seongmin; Park, Chan Woo
- Source:
- Composites 2019 v.121 pp. 449-456
- ISSN:
- 1359-835X
- Subject:
- annealing; boron nitride; carbon; carbon fibers; coatings; composite materials; copper; electrophoresis; polymers; thermal conductivity
- Abstract:
- ... A hybrid filler system, which combines hexagonal boron nitride (hBN) and copper particles, was applied on the surface of continuous carbon fiber tapes by utilizing electrophoretic deposition to maximize the thermal conductivity of carbon fiber-reinforced polymer (CFRP) composite in this study. The results show that as the deposition time increased, the thermal conductivity increased. The annealing ...
- DOI:
- 10.1016/j.compositesa.2019.03.030
-
https://dx.doi.org/10.1016/j.compositesa.2019.03.030
- Author:
- Huangfu, Yiming; Ruan, Kunpeng; Qiu, Hua; Lu, Yuanjin; Liang, Chaobo; Kong, Jie; Gu, Junwei
- Source:
- Composites 2019 v.121 pp. 265-272
- ISSN:
- 1359-835X
- Subject:
- aerogels; ammonium persulfate; aniline; annealing; ascorbic acid; carbon nanotubes; carboxylation; electrical conductivity; electromagnetic interference; epoxides; graphene; graphene oxide; hardness; heat tolerance; hydrochloric acid; nanocomposites; polymers; ultrasonics
- Abstract:
- ... After ultrasonic dispersion of graphene oxide (GO) prepared by modified Hummers method and surface carboxylated multi-walled carbon nanotubes (f-MWCNT), L-ascorbic acid was added and the MWCNT/thermally annealed graphene aerogel (MWCNT/TAGA) was obtained by thermal annealing. Polyaniline/MWCNT/TAGA (PANI/MWCNT/TAGA) was prepared by slow adding ammonium persulfate into aniline/hydrochloric acid sol ...
- DOI:
- 10.1016/j.compositesa.2019.03.041
-
https://dx.doi.org/10.1016/j.compositesa.2019.03.041