Hollow spheres as nanocomposite fillers for aerospace and automotive composite materials applications

Lapčík, Ľubomír; Ruszala, Matthew James Amor; Vašina, Martin; Lapčı́ková, Barbora; Vlček, Jakub; Rowson, Neil A.; Grover, Liam M.; Greenwood, R.

doi:10.1016/j.compositesb.2016.09.031

Cited by 23 publications

(4 citation statements)

References 34 publications

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“…The syntactic foam material can be used for engineering applications across a range of industries such as mining, marine, transportation, civil, defence and aerospace in lieu of its characteristics of low density, good thermal efficiency, high strength-to-weight ratio and impact resistance capacity [1]. The specific applications include road barriers, sandwich structure, open pit edge protection and aerospace structure [2,3] etc. By applying the syntactic foam material for the roadside barrier, the impact force can be significantly reduced while the energy absorption capacity remains [4].…”

Section: Introductionmentioning

confidence: 99%

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Impact response and energy absorption of single phase syntactic foam

Pham

Chen

Kingston

et al. 2018

Composites Part B: Engineering

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This study experimentally investigates the static and impact response of a new single phase syntactic foam which has been newly developed for impact energy absorption. The syntactic foam had different densities ranging from 172 kg/m 3 to 366 kg/m 3 depending on the thickness and composition of the coating layers. The impact response and impact energy absorption were investigated by using instrumented drop-weight impact tests. Under static loads, the mechanical properties of the syntactic foam including the compressive strength, the yield stress, and Young's modulus increased with the density but the rate of increment decreased at higher densities. There were two types of progressive failures of the syntactic foam under impact loads. The failure propagation was examined and found to be dependent on the material density and the impact velocity. Interestingly, the densification only occurred in the low-density specimens while this phenomenon was not observed for the specimens with the density greater than 288 kg/m 3. The impact energy absorption capacity increased significantly with the density and the wall thickness of the macrospheres.

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Section: Introductionmentioning

confidence: 99%

“…The density of the epoxy resin was about 1150 kg/m 3 . The density of the foams were 172 kg/m 3 , 288 kg/m3 and 366 kg/m 3 , respectively. Under quasi-static load, the foams with the density of 172 kg/m 3 , 288 kg/m 3 and 366 kg/m 3 had the average plateau stress ( pl σ ) of 0.55 MPa, 1.10 MPa and 1.90 MPa, respectively, as shown in Figs.…”

mentioning

confidence: 99%

Impact response and energy absorption of single phase syntactic foam

Pham

Chen

Kingston

et al. 2018

Composites Part B: Engineering

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“…Previously minerals served as the additives in polymer systems mainly as a cost reducing component [6]. Progressing technological improvements in minerals processing and polymer chemistry allowed their novel role as the functional additives, thus bringing specific mechanical and functional properties to the final composites structures [5,[7][8][9]. The packing density of the powder bed is strongly dependent on the applied consolidation stress, surface energy [10], surface roughness and particle shape of the individual particles [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Materials characterization of advanced fillers for composites engineering applications

Lapčík

Vašina

Lapčı́ková

et al. 2019

Nanotechnology Reviews

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Four different minerals were investigated; hollow spheres of calcium carbonate, platy mica, needle like wollastonite and glassy perlite and characterized via iGC for surface energy, Freeman powder rheology for flow characterization, cyclic uniaxial die compaction for modulus of elasticity and frequency dependent sound absorption properties. Particle surface energy and particle shape strongly affected the packing density of powder beds. In the case of higher porosity and thus lower bulk density, the powders acoustic absorption was higher in comparison with higher packing density materials. Surface energy profiles and surface energy distributions revealed clear convergence with powder rheology data, where the character of the powder flow at defined consolidation stresses was mirroring either the high cohesion powders properties connected with the high surface energy or powder free flowing characteristics, as reflected in low cohesion of the powder matrix.

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“…The superior mechanical properties of the syntactic material can be obtained through the composite action [5][6][7]. It should be noted that the effect of the volume fraction of microsphere on the mechanical properties of syntactic foam is not well understood [8,9].…”

Section: Introductionmentioning

confidence: 99%

Effect of crumb rubber on mechanical properties of multi-phase syntactic foams

et al. 2018

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Syntactic foam is a lightweight and strong material which can be used in marine and aeronautical applications. However, the brittleness of the material limits its application to a broader range. Adding crumb rubber to the syntactic foam can increase its energy absorption capacity. The effect of crumb rubber on the fracture toughness and energy absorption capacity of 2-phase and 3-phase syntactic foam is evaluated under both static and impact loads. The experimental results have shown that the fracture toughness of the 2-phase rubberized syntactic foam increased by 8% while an increase of 22% of its fracture energy was observed. Under quasi-static loads, the 3-phase rubberized syntactic foam showed decreases in the compressive strength and elastic modulus but an increase in the energy absorption capacity as compared to the syntactic foam without crumb rubber. In addition, the impact energy absorption of the 3-phase rubberized syntactic foam increased by 24% as compared to that of the 3-phase syntactic foam without crumb rubber.

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Hollow spheres as nanocomposite fillers for aerospace and automotive composite materials applications

Cited by 23 publications

References 34 publications

Impact response and energy absorption of single phase syntactic foam

Impact response and energy absorption of single phase syntactic foam

Materials characterization of advanced fillers for composites engineering applications

Effect of crumb rubber on mechanical properties of multi-phase syntactic foams

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