A quantitative understanding on the mechanical behaviors of carbon nanotube reinforced nano/ultrafine-grained composites

Dong, Shuhong; Zhou, Jianqiu; Hui, David

doi:10.1016/j.ijmecsci.2015.07.019

Cited by 46 publications

(15 citation statements)

References 51 publications

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“…Mechanical testing is required to establish the structure-property relationships of the composites; however, most of the studies in the literature [9][10][11][12] involved the tensile behavior of the CNT/Al composites at room temperature (RT). Nanocomposites and other structural materials could be subjected to either tensile or compressive forces at varying temperatures when used in systems and devices.…”

Section: Introductionmentioning

confidence: 99%

Deformation and strengthening mechanisms of a carbon nanotube reinforced aluminum composite

Mokdad

Chen

Liu

et al. 2016

Carbon

171

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Section: Introductionmentioning

confidence: 99%

Deformation and strengthening mechanisms of a carbon nanotube reinforced aluminum composite

Mokdad

Chen

Liu

et al. 2016

Carbon

171

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“…However, in most cases, CNTs located at Al grain boundaries [1]. Dong et al [9,10] developed a dislocation density based model and estimated that the elastic mismatch between CNTs and Al would be favorable to the strain hardening capability through the interaction between geometrically-necessary dislocations (GNDs) and statistically stored dislocations (SSDs). However, no direct experimental evidence was provided.…”

mentioning

confidence: 99%

“…The dislocation storage processes give rise to both the non-directional effective stress required locally for the dislocations to move (short-range interactions like friction stress and forest dislocation hardening) and the directional back stress associated with the microstructures providing long-range interactions with mobile dislocations [12]. In previous models of the tensile deformation of CNT reinforced MMCs [9,10], the forest hardening mechanism has been considered. However, to the best of our knowledge, there weren't any experimental investigation and discussion on the role of back stress.…”

mentioning

confidence: 99%

Back stress in strain hardening of carbon nanotube/aluminum composites

Fan

Tan

et al. 2017

Materials Research Letters

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As demonstrated by the loading-unloading tests and the modeling of the grain size effect and the composite effect, mainly owing to the back stress induced by CNTs, carbon nanotube/aluminum (CNT/Al) composites exhibit higher strain hardening capability than the unreinforced ultrafinegrained Al matrix. The back stress induced by CNTs should arise from the interfacial image force and the long-range interaction between statically stored dislocations and geometrically necessary dislocations around the CNT/Al interface. Therefore, this CNT-induced interfacial back stress strengthening mechanism is supposed to provide a novel route to enhancing the strain hardening capability and ductility in CNT/Al composites. IMPACT STATEMENT The present work investigates the roles and origins of back stress in the strain hardening of the carbon nanotubes/aluminum composites for the first time.

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“…In ABAQUS, heat transfer problems such as uncoupled heat transfer analysis, sequential coupled thermal stress analysis, fully coupled thermal stress analysis, adiabatic analysis and thermoelectric coupling analysis can be solved conveniently and quickly. The prediction of thermal expansion coefficient of materials requires sequential coupled thermal stress analysis using ABAQUS/Standard solver [15][16][17][18]. The results of stress-strain field depend on the results of temperature field.…”

Section: Prediction Of Thermal Expansion Coefficientmentioning

confidence: 99%

Construction of visual 3-D fabric reinforced composite thermal performance prediction system

2019

THERM SCI

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In view of the construction of a visualized 3-D thermal performance prediction system for fabric reinforced composites, the thermal constants analyzer was used to analyze and compare the thermal conductivity of the 3-D fabric reinforced composites by experimental methods, such as fiber volume fraction, internal braiding angle, and different yarn reduction methods and fabric structures. The factors influencing the thermal conductivity of 3-D fabric reinforced composites were studied, and the principle of thermal conductivity was analyzed. The thermal expansion coefficients of 3-D fabric reinforced composites in X-and Y-directions are one order of magnitude smaller than those in Z-directions. When aramid fabric is used as reinforcement, the composites with negative thermal expansion coefficients can be designed. The research results provide the necessary basis for the design, application and theoretical research of the 3-D fabric reinforced composites in heat conduction. Through the research of this paper, it lays a foundation for the process selection, performance design and structure optimization of this kind of material, and promotes the further application of 3-D braided composites.

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A quantitative understanding on the mechanical behaviors of carbon nanotube reinforced nano/ultrafine-grained composites

Cited by 46 publications

References 51 publications

Deformation and strengthening mechanisms of a carbon nanotube reinforced aluminum composite

Deformation and strengthening mechanisms of a carbon nanotube reinforced aluminum composite

Back stress in strain hardening of carbon nanotube/aluminum composites

Construction of visual 3-D fabric reinforced composite thermal performance prediction system

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