Effect of volume fraction of reinforcement phase on mechanical behavior of ultra-high-temperature composite consisting of iron matrix and TiB<sub>2</sub> particulates

Jahani, Babak; Jazi, Mehdi Salimi; Azarmi, Fardad; Croll, Andrew B.

doi:10.1177/0021998317712569

Cited by 17 publications

(7 citation statements)

References 38 publications

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“…Currently, composite materials are widely used in various kinds of applications and a large share of composites are using fibers as its reinforcement. [1][2][3][4][5][6][7] Depending on the sources, fibers can be classified into two categories: synthetic fiber and natural fiber. Despite offering some lucrative features, the noxious impacts of non-biodegradable synthetic fiber in nature and less feasibility are the issues for which the modern world is looking for its replacements.…”

Section: Introductionmentioning

confidence: 99%

AFM Based Nanomechanical Characterization of Cellulose Nanofibril

Parvej

Wang

Jiang

2020

Journal of Composite Materials

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Cellulose nanofibril (CNF) is the fundamental unit of almost all types of natural fibers and is regarded as one of the main factors that influence their mechanical properties. Besides, owing to having a high aspect ratio, it is increasingly being used in the research of nanocomposite as a reinforcement recently. In order to utilize CNF as reinforcement more effectively, it is important to have a comprehensive idea about the mechanical properties of individual CNFs. Most of the studies are focused on the elastic modulus in the longitudinal direction, but the study of the elastic modulus in the transverse direction is still lacking. In this study, a single strand of CNF was subjected to an atomic force microscopy to characterize the surface morphology of CNF and determine the transverse elastic modulus through nanoindentation. The transverse elastic modulus of CNF was calculated to be 6.9 [Formula: see text] 0.4 GPa using extended JKR model.

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Section: Introductionmentioning

confidence: 99%

AFM Based Nanomechanical Characterization of Cellulose Nanofibril

Parvej

Wang

Jiang

2020

Journal of Composite Materials

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“…ZnO has been widely used in the cosmetic and plastic industry to improve some specific properties of composites such as UV absorption, thermal stability, and antibacterial activity . It has been reported that the incorporation of ZnO into different polymers may result in the formation of new materials with unique structure and properties .…”

Section: Introductionmentioning

confidence: 99%

Insight on the influence of nano zinc oxide on the thermal, dynamic mechanical, and flow characteristics of Poly(lactic acid)– zinc oxide composites

Shojaeiarani

Bajwa

Jiang

et al. 2019

Polymer Engineering & Sci

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Composites of Poly(lactic acid) (PLA) and spherical zinc oxide (ZnO) nanoparticles were prepared using melt processing followed by injection molding. The effect of nanosized ZnO on the molecular structure, thermal properties, dynamic mechanical properties, and flow characteristics of PLA composites were analyzed. Scanning electron microscopy images illustrated the formation of ZnO aggregates through PLA matrix. The molecular weight of PLA-ZnO experienced a substantial decline by 55%, suggesting the presence of ZnO provoked degradation of PLA during composite preparation. Glass transition temperature of PLA-ZnO decreased by 18% as compared with pure PLA, confirming the deleterious role of ZnO in PLA. The ZnO nanoparticles acted as a reactant and increased the thermal degradation rate. However, the incorporation of ZnO into PLA increased the crystallinity up to 20% and the storage modulus of composites in glassy state by 10%. The higher peak value of tan δ in composites suggested the more viscous behavior, which was further supported by lower number average molecular weight. The complex viscosity of composites exhibited a large Newtonian region over low shear rate, followed by shear thinning phenomenon. A significant decrease (96%) in complex viscosity was observed with the addition of ZnO into PLA.

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“…Significant correlations of strain rates with linear head acceleration for brain, brainstem, dura, and skull were found and are presented in Figure 9a-d. These linear regressions were independent of the effects of direction and speed of impactor, as well as the HE mass, distance, direction, and head condition (protection) under blast [65]. The proposed strain rates of brain, brainstem, dura, and skull are, respectively, 1.9 (R = 0.8, p < 0.01), 0.7 (R = 0.9, p < 0.01), 1.18 (R = 0.9, p < 0.001) and 0.7 (R = 0.6, p < 0.01) times of resulting head acceleration by impact.…”

Section: Discussionmentioning

confidence: 91%

The Strain Rates in the Brain, Brainstem, Dura, and Skull under Dynamic Loadings

Hosseini-Farid

Amiri-Tehrani-Zadeh

Ramzanpour

et al. 2020

MCA

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Knowing the precise material properties of intracranial head organs is crucial for studying the biomechanics of head injury. It has been shown that these biological tissues are significantly rate-dependent; hence, their material properties should be determined with respect to the range of deformation rate they experience. In this paper, a validated finite element human head model is used to investigate the biomechanics of the head in impact and blast, leading to traumatic brain injuries (TBI). We simulate the head under various directions and velocities of impacts, as well as helmeted and unhelmeted head under blast shock waves. It is demonstrated that the strain rates for the brain are in the range of 36 to 241 s −1 , approximately 1.9 and 0.86 times the resulting head acceleration under impacts and blast scenarios, respectively. The skull was found to experience a rate in the range of 14 to 182 s −1 , approximately 0.7 and 0.43 times the head acceleration corresponding to impact and blast cases. The results of these incident simulations indicate that the strain rates for brainstem and dura mater are respectively in the range of 15 to 338 and 8 to 149 s −1 . These findings provide a good insight into characterizing the brain tissue, cranial bone, brainstem and dura mater, and also selecting material properties in advance for computational dynamical studies of the human head.

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Effect of volume fraction of reinforcement phase on mechanical behavior of ultra-high-temperature composite consisting of iron matrix and TiB₂ particulates

Cited by 17 publications

References 38 publications

AFM Based Nanomechanical Characterization of Cellulose Nanofibril

AFM Based Nanomechanical Characterization of Cellulose Nanofibril

Insight on the influence of nano zinc oxide on the thermal, dynamic mechanical, and flow characteristics of Poly(lactic acid)– zinc oxide composites

The Strain Rates in the Brain, Brainstem, Dura, and Skull under Dynamic Loadings

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Effect of volume fraction of reinforcement phase on mechanical behavior of ultra-high-temperature composite consisting of iron matrix and TiB2 particulates

Cited by 17 publications

References 38 publications

AFM Based Nanomechanical Characterization of Cellulose Nanofibril

AFM Based Nanomechanical Characterization of Cellulose Nanofibril

Insight on the influence of nano zinc oxide on the thermal, dynamic mechanical, and flow characteristics of Poly(lactic acid)– zinc oxide composites

The Strain Rates in the Brain, Brainstem, Dura, and Skull under Dynamic Loadings

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Product

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Effect of volume fraction of reinforcement phase on mechanical behavior of ultra-high-temperature composite consisting of iron matrix and TiB₂ particulates