Study on Compressive Properties of Syntactic Foams for Marine Applications

Salleh, Zulzamri; Islam, Mainul; KU, H.

doi:10.12783/issn.2168-4286/2.1/salleh

Cited by 12 publications

(8 citation statements)

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“…Proposed value for modulus of elasticity glass microballoon g E can be used at 60 GPa [17]. The final modified Turner model can be written up and divided by three equations as below in Equations (6), (7) and (8):…”

Section: Investigation On Thermomechanical Analysis (Tma)mentioning

confidence: 99%

“…Physical properties such as density syntactic foam, including a radial wall thickness ratio, porosity and voids are most likely to be very effective in tailoring mechanical properties of syntactic foam [5]. This type of lightweight materials is useful for aerospace [6], marine, thermal insulation and packaging [7] because of their good mechanical properties for the environment. It will lead to a concern subject to high temperatures and thus it is important to determine the coefficient of thermal expansion,  (CTE) [8].…”

Section: Introductionmentioning

confidence: 99%

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Thermo-mechanical properties of fused borosilicate syntactic foams

Salleh

Islam

Epaarachchi

et al. 2019

JMES

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The coefficient thermal expansion, a (CTE) of glass microballoon/vinyl ester syntactic foam was determined using dimensional changes of a temperature gradient plot. The CTE was measured and found to be up to 53-63 % lower than the vinyl ester resin matrix when mixing with different weight percentages of the glass microballoon ranging from 2 wt.% to 10 wt.% using a thermomechanical analyzer (TMA). The results of CTE showed that it has a strong relationship with the syntactic foam density (r), radius ration (h) ,cavity porosity (fg) and matrix porosity (fm). Experimental results showed that the CTE decreases when glass microballoons are added into the composites measured at different temperatures ranging from 30 oC to 70 °C. The CTE from the experimental results were also compared with Turner’s modification model for composites for its suitability for thermal expansion of syntactic foams. The results indicate that Turner’s modification model exhibits a close correlation with the reduction up to 80 % of CTE based on experiment.

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Section: Investigation On Thermomechanical Analysis (Tma)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Thermo-mechanical properties of fused borosilicate syntactic foams

Salleh

Islam

Epaarachchi

et al. 2019

JMES

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“…In service, these syntactic foams are immersed in sea water and subjected to hydrostatic pressure due to the weight of the water column. Several studies investigate the behavior of these composites under mechanical loading [9][10][11][12][13]. Considering especially hydrostatic pressure [14][15][16][17], by applying pressure to a syntactic foam, a decrease in the volume directly related to the bulk compressibility of the material can be observed: the lower the compressibility of the composite, the greater the variation of the volume.…”

Section: Introductionmentioning

confidence: 99%

Water absorption in hollow glass microsphere composites under hydrostatic pressure: Mechanisms and influencing parameters

et al. 2023

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Hollow glass microsphere composites, or syntactic foams, are widely used in marine environments due to their buoyancy. However, in service, loss of buoyancy occurs along time. This behavior is attributed to water absorption that leads to a mass increase of the material. This study investigates the water absorption of three types of syntactic foams under hydrostatic pressure with density ranging from 0.59 to 0.74 g. cm−3. Water absorption measurements are performed for a maximal duration of 3 years and under hydrostatic pressure up to 700 bars. Results show that water absorption is much higher than expected and attributed to the filling of microspheres that collapse over time. Based on results presented here, prediction of water absorption syntactic foams is proposed including the impact of applied hydrostatic pressure. This prediction allows estimating the buoyancy loss in hollow glass microsphere composite as a function of time, depth and sample size.

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“…Syntactic foams represent a class of closed cell foams synthetized by dispersing rigid hollow particles in a matrix material [13][14][15][16][17]. Classical processing techniques such as gas Materials 2022, 15, 5446 2 of 10 bubbling in molten metal shortfall in control over the size and the structure of the pore walls, as well as the percentage of porosity within the material.…”

Section: Introductionmentioning

confidence: 99%

Aluminum Perlite Syntactic Foams

et al. 2022

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This paper presents the usage of spark plasma sintering (SPS) as a method to obtain aluminum-expanded perlite syntactic foams with high porosity. In the test samples, fine aluminum powder with flaky shape particles was used as matrix material and natural, inorganic, granular, expanded perlite was used as a space holder to ensure high porosity (35–57%) and uniform structure. SPS was used to consolidate the specimens. The structures were characterized by scanning electron microscopy and compression tests. Energy absorption (W~7.49 MJ/m3) and energy absorption efficiency (EW < 90%) were also determined.

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Study on Compressive Properties of Syntactic Foams for Marine Applications

Cited by 12 publications

References 0 publications

Thermo-mechanical properties of fused borosilicate syntactic foams

Thermo-mechanical properties of fused borosilicate syntactic foams

Water absorption in hollow glass microsphere composites under hydrostatic pressure: Mechanisms and influencing parameters

Aluminum Perlite Syntactic Foams

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