Infiltration Characteristics and Compressive Behaviour of Metal Matrix Syntactic Foams

Orbulov, Imre Norbert; Ginsztler, János; Kun, Péter

doi:10.4028/www.scientific.net/msf.729.68

Cited by 12 publications

(12 citation statements)

References 17 publications

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“…The materials investigated were produced using the pressure infiltration technique. The detailed manufacture process can be found in [6]. For the investigation, technical purity…”

Section: Methodsmentioning

confidence: 99%

Monitoring the failure mechanisms in metal matrix syntactic foams during compression by acoustic emission

et al. 2016

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Syntactic foam containing hollow ceramic spheres with an average outer diameter of 1.45 mm and wall thickness of 58 µm was produced using the pressure infiltration technique. This paper presents the analysis of the compressive deformation mechanisms of these syntactic foams using the acoustic emission (AE) technique. The active 2 deformation mechanisms are determined by sequential k-means analysis of the AE data. The analysis revealed three dominant deformation mechanisms: plastic deformation of the cell walls, sphere fracture, and cell wall collapse. The AE results obtained are in good correlation with the findings of the visual inspection of the surface of the specimen, suggesting that the active deformation mechanisms in the whole volume of the specimen can be determined by this technique.

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“…The materials investigated were produced using the pressure infiltration technique. The detailed manufacture process can be found in [6]. For the investigation, technical purity…”

Section: Methodsmentioning

confidence: 99%

Monitoring the failure mechanisms in metal matrix syntactic foams during compression by acoustic emission

et al. 2016

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“…The threshold pressure can be calculated (estimated) [21][22][23][24][25][26][27][28] or measured [29][30][31]. Pressure infiltration is capable of producing MMSFs with maximal (~64 vol%) hollow sphere volume fraction and better matrix dispersion, but it requires more investment and more sophisticated equipment [29,30,[32][33][34][35][36][37][38]. In practice, usually one kind of hollow sphere set with monomodal diameter distribution is applied as reinforcement.…”

Section: Introductionmentioning

confidence: 99%

Characteristic compressive properties of hybrid metal matrix syntactic foams

Májlinger

Orbulov

2014

Materials Science and Engineering: A

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Hybrid metal matrix syntactic foams (hybrid MMSFs) are particle reinforced composites in which the reinforcement is the combination of more than one grade of hollow spheres. The difference between the spheres can be in their chemical composition, dimension, physical properties etc. In this study AlSi12 matrix hybrid MMSFs with monomodal Globocer (Al2O3 and SiO2 based ceramic) and Globomet (pure Fe) reinforcements were produced by pressure infiltration. The investigation parameters were the ratio of the hollow sphere grades and the aspect ratio of the specimens. Microstructural investigations showed almost perfect infiltration and favourable interface layer, while quasi-static compression tests showed that the composition of the reinforcement and the aspect ratio of the specimens have determinative effect on the characteristic properties (compressive and flow strength, fracture strain, stiffness and absorbed energy). This nature of the MMSFs ensures the possibility to tailor their properties in order to optimise them for a given application.

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“…In this paper the same type of MMSF with AlSi12 matrix was investigated as in [6,7] produced by the manufacture process of [8].…”

Section: Methodsmentioning

confidence: 99%

Monitoring the failure states of a metal matrix syntactic foam by modal analysis

et al. 2019

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This paper presents a new non-destructive method applying modal analysis to determine the failure state of theAlSi12 matrix syntactic foam containing ceramic hollow spheres. The results proved that the decrease in natural frequencies of the first two modes and the calculated effective Young's modulus indicate the damage state of the syntactic foam's structure during compression. Both the natural frequencies and the elastic modulus start to change after the onset of fracture of hollow spheres, which is ~60MPa, according to our 2 previous work. A 5% decrease in these parameters are suggested as a practical limit of the deterioration of a load-bearing structure, which collides with the maximum in the acoustic emission activity.

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Infiltration Characteristics and Compressive Behaviour of Metal Matrix Syntactic Foams

Cited by 12 publications

References 17 publications

Monitoring the failure mechanisms in metal matrix syntactic foams during compression by acoustic emission

Monitoring the failure mechanisms in metal matrix syntactic foams during compression by acoustic emission

Characteristic compressive properties of hybrid metal matrix syntactic foams

Monitoring the failure states of a metal matrix syntactic foam by modal analysis

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