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Journal articles on the topic 'Aluminium foam'

Author: Grafiati
Published: 4 June 2021
Last updated: 6 September 2023

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1

Uzun, A. "Compressive Crush Performance of Square Tubes Filled with Spheres of Closed-Cell Aluminum Foams." Archives of Metallurgy and Materials 62, no. 3 (September 26, 2017): 1755–60. http://dx.doi.org/10.1515/amm-2017-0267.

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AbstractThis paper describes the compressive crush behaviour of spheres of closed-cell aluminium foams with different diameters (6, 8 and 10 mm) and square tubes filled with these spheres. The spheres of closed-cell aluminium foams are net spherical shape fabricated via powder metallurgy methods by heating foamable precursor materials in a mould. The square tubes were filled by pouring the spheres of closed-cell aluminium foams freely (without any bonding). The compressive crush performance of square tubes filled with spheres of closed-cell aluminum foams were compared to that of the empty tubes. The results show a significant influence of the spheres of closed-cell aluminium foam on the average crushing load of the square tubes. The energy absorption in the square tube filled with spheres of closed-cell aluminium foam with diameters of 10 mm is higher than in the other square tubes. The spheres of closed-cell aluminium foams led to improvement of the energy absorption capacity of empty tubes.
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2

Guo, Qian, Wenjin Yao, Wenbin Li, Xiaoming Wang, and Changqiang Huang. "Mechanical Properties of Aluminium Foam and How Density, Temperature, and Strain Rate Affect Dynamic Strain–Stress Relationship." Science of Advanced Materials 13, no. 11 (November 1, 2021): 2200–2212. http://dx.doi.org/10.1166/sam.2021.4112.

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Aluminium foam has been popular in engineering, and aluminium foam research has become a research hotspot. The strain–stress relationship of aluminium foam presents three distinct stages. In this paper, the mechanical behaviours of aluminium foam materials under dynamic and quasi-static compression are studied. The effects of density, strain rate and temperature on the dynamic mechanical behavior of aluminum foam were analyzed. Combined with the dynamic and static stress–strain curves of aluminium foam, the specific characteristics and the phenomena in every stage of the compression process were studied by high-speed photography and CT. The experimental results show that aluminium foam undergoes obvious collapse layerby-layer in the process of compression. The stress–strain curves include a considerable stress drop after the elastic stage. Moreover, the structural defects of the material will cause the plastic failure in advance, and the possibility of the existence of structural defects will be affected by the density. Under dynamic compression, with increasing density the strain rate sensitivity of aluminium foam increase, but with the temperature increasing, the strain rate sensitivity was decrease.
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3

Garai, Flórián. "Modern Applications of Aluminium Foams." International Journal of Engineering and Management Sciences 5, no. 2 (April 15, 2020): 14–21. http://dx.doi.org/10.21791/ijems.2020.2.3.

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The implementation of aluminium alloy foam has more and more attention. Application of closed cell aluminium foam has made an impact in automobile and aerospace applications where crash energy absorption, vibration and weight reduction are obligatory [1,2,3]. The aluminium alloy foam is an advanced lightweight material providing high strength and stiffness at relatively low density. The technological use of aluminium alloy foam is difficult with the currently available technologies. In the case of open cell aluminium foams, the most common research areas for application are heat exchanger components, filters and sound damping elements [3]. The manuscript focuses on the manufacturing techniques of the aluminium alloy foams according to the application areas. First step is the investigation of the requirements for the application: what are the loads and the circumstances and why can we use aluminium foams. Second step is the knowledge of the producing methods of the foam or the component. And the last step is the investigation of the possible testing methods.
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4

Yao, Guang Chun, Huan Liu, and Bin Na Song. "The Progress in Aluminum Foam Research in China." Advanced Materials Research 457-458 (January 2012): 253–56. http://dx.doi.org/10.4028/www.scientific.net/amr.457-458.253.

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The aluminum foam materials have studied for the last 15 years in China, from laboratory experiments to industrialized scale. we can manufacture 800mm×2000mm aluminum foam board products. The essential parameters of our aluminum foam product are as follows, density: 0.3~0.6g/cm3; porosity: 77%~88%; pore diameter 5MPa. Some properties of aluminium foam materials were studied such as sound absorption, energy absorption, impact bending strength of aluminum (steel) plate/Al foam sandwich, etc.
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5

Wang, Qing Chun, Hao Long Niu, Guo Quan Wang, and Yu Xin Wang. "Numerical Simulation on Bending Characteristics of Aluminium Foam Filled Thin-Walled Tubes." Advanced Materials Research 213 (February 2011): 88–92. http://dx.doi.org/10.4028/www.scientific.net/amr.213.88.

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Different aluminum foam filling lengths were used to increase the bending energy absorbing capacity of the popularly used hat sections. Bending energy-absorption performance of the thin-walled tubes was numerically studied by explicit non-linear software LS-Dyna. First empty hat section subjected to quasi-static bending crushing was simulated, then structures with different aluminium foam filling lengths were calculated, finally energy absorption capacity of these structures were compared. Calculation results showed that, the internal energy absorbed and mass specific energy absorption capacity of foam filled thin walled structures were increased significantly compared to the empty sections. The reason of the improvement was mainly due to the contact of the aluminium foam and the structure. Aluminium foam filling is a promising method for improving lateral energy absorbing capacity of thin-walled sections.
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6

Fiedler, Thomas, and Nima Movahedi. "Compact Aluminium Foam Heat Exchangers." Metals 13, no. 8 (August 11, 2023): 1440. http://dx.doi.org/10.3390/met13081440.

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The aim of this study was to investigate the potential application of metal foams in shell-tube recuperators. A356 aluminium foam was cast around the internal and external surfaces of a thin-walled copper tube to enhance heat transfer between separated water streams at different temperatures. The results demonstrated that the aluminium foam drastically increased heat transfer efficiency due to its large volumetric surface area and high thermal conductivity. In the shell-tube foam recuperators, a maximum heat transfer efficiency of 48.1% was observed, compared to only 12.2% for a single copper tube without metal foam. The pressure drop across the external foam increased with the flow rate, from an average value of 1.19 kPa at 1.0 L/min to 7.36 kPa at 3.0 L/min. These findings suggest that metal foams have great potential for use in shell-tube recuperators, which could significantly improve the efficiency of heat transfer in various industrial and engineering applications.
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7

Djamaluddin, Fauzan, Ilyas Renreng, and Muhammad Ma’ruf. "Crashworthiness Analysis of Vehicle Crash-Box Filled with Aluminium Foam." Materials Science Forum 1092 (June 6, 2023): 13–18. http://dx.doi.org/10.4028/p-31t23f.

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Lightweight, robust, and anti-rust properties of aluminium foam might be a solution for reducing the effect of traffic accidents and for minimum fuel consumption. This research investigated the crashworthiness of vehicle crash-box filled with aluminum foam by varying its cross-sectional structure and its loading angle such as 0°, 10°, 20°, 30°. The variations consisted of structures for example single wall foam filled and double wall foam filled. The material used to construct the wall was Aluminum Alloy 2024 and Aluminium foam. The finite element model using Abaqus CAE Software was operated for both designing the crash-box and analyzing its crashworthiness. Some parameters were determined To obtain the best crash-box design, the finite element analysis was carried on total energy absorption, specific energy absorption, maximum load, average load, and crush-force efficiency. Double wall foam filled crash-box was shown to have better energy absorption ability and this structure of crush box is considered fpr vehicle structure in future.
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8

Sassi, Meriem, and Andrea Simon. "Waste-to-Reuse Foam Glasses Produced from Soda-Lime-Silicate Glass, Cathode Ray Tube Glass, and Aluminium Dross." Inorganics 10, no. 1 (December 21, 2021): 1. http://dx.doi.org/10.3390/inorganics10010001.

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Aluminium dross is a hazardous industrial waste generated during aluminium production. It contains metallic oxides of aluminium and magnesium, other phases (aluminum nitride), and residues of fluxes and salts from the melting process of aluminium. Discarding this by-product is considered an environmental and economic challenge due to the high reactivity of dross with water or even air humidity. After removing the hazardous components from the as-received dross, one of the optional approaches is to incorporate the treated dross into construction materials. Dross is applied in several types of research as a secondary raw material source for alumina, clinker, cement or glass-ceramic production, but only a few papers focus on the usage of dross as a foaming agent for foams. Even fewer research are reported where dross was applied as a basic component of foam glasses. In this work, foam glasses were produced completely from waste materials: Aluminium dross, container (SLS) glass, and cathode ray tube (CRT) glass. The research holds several specificities, i.e., combining two industrial waste materials (CRT glass and dross), and adding an increased amount from the wastes. The physical and mechanical characteristics were examined with a special focus on the effect of the foam glass components on the microstructure, density, thermal conductivity, and compressive strength.
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9

Taherishargh, M., I. V. Belova, G. E. Murch, and T. Fiedler. "Pumice/aluminium syntactic foam." Materials Science and Engineering: A 635 (May 2015): 102–8. http://dx.doi.org/10.1016/j.msea.2015.03.061.

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10

Haidar, Shamim, Mukandar Sekh, Joyjeet Ghose, and Goutam Sutradhar. "Frictional Behavior of Aluminium MMC Foam Synthesized Using Dual Foaming Agent." International Journal of Surface Engineering and Interdisciplinary Materials Science 5, no. 2 (July 2017): 18–32. http://dx.doi.org/10.4018/ijseims.2017070102.

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In the present article, an attempt is made to develop aluminium foam indigenously. The experimental setup for the production of aluminium foam is designed and fabricated. Investigation are made into the use of dual foaming agents (i.e. TiH2 and CaCO3) along with SiC to develop suitable aluminium foams which can be utilized for various engineering products like load-bearing elements, crash resistance elements etc. The process is standardized to produce aluminium foam with specific density with minimum variability. This aluminium foam produced possesses a very low coefficient of friction. This work successfully characterized the frictional properties of the developed material. In order to define the Frictional properties of this material, a mathematical model which uniquely defines the frictional behavior of this modified Al-MMC foam has been developed.
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11

Ahmad Hamdi, Amirah, Nurul Akmal Mohd Sharif, and Anasyida Abu Seman. "Dissolution Method of Aluminum Foams Containing Mg Using Carbamide Space Holder." Materials Science Forum 888 (March 2017): 373–76. http://dx.doi.org/10.4028/www.scientific.net/msf.888.373.

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This study investigated the properties of aluminium foam containing Mg with various amount of space holder. Aluminum foam was fabricated using dissolution method with various amount of carbamide (20, 40 and 60 wt. %). Aluminum foam with 60 wt. % carbamide has the lowest density (0.68 g/cm3) and exhibited the highest porosity (74.97%). However, the results indicates that aluminum foam with 40 wt. % of carbamide have good compressive and energy absorption with acceptable density and porosity value.
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12

Liu, Cheng Jun, Yi Xia Zhang, Qing Hua Qin, and Rikard Heslehurst. "High Velocity Impact Modelling of Sandwich Panels with Aluminium Foam Core and Aluminium Sheet Skins." Applied Mechanics and Materials 553 (May 2014): 745–50. http://dx.doi.org/10.4028/www.scientific.net/amm.553.745.

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A finite element model is developed in this paper to simulate the perforation of aluminium foam sandwich panels subjected to high velocity impact using the commercial finite element analysis software LS-DYNA. The aluminum foam core is governed by the material model of crushable foam materials, while both aluminium alloy face sheets are modeled with the simplified Johnson-Cook material model. A non-linear cohesive contact model is employed to simulate failure between adjacent layers, and an erosion contact model is used to define contact between bullets and panels. All components in the model are meshed with 3D solid element SOLID 164. The developed finite element model is used to simulate the dynamic response of an aluminium foam sandwich panel subjected to projectile impact at velocity ranging from 76 m/s to 187m/s. The relationship between initial velocity and exit velocity of the projectile obtained from numerical modelling agrees well with that obtained from experimental study, demonstrating the effectiveness of the developed finite element model in simulating perforation of sandwich panels subjected to high velocity impact.
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13

Haag, F. C., A. F. Galio, and L. Schaeffer. "Uniaxial compression tests of aluminium foams." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 216, no. 4 (April 1, 2002): 633–36. http://dx.doi.org/10.1243/0954405021520148.

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Some cellular aluminium materials have been extensively developed and investigated in recent years. The potential for applying aluminium foams in lightweight construction is mainly based on the stiffness and impact absorption. Because of these characteristics, this work is based mainly on the uniaxial compression resistance of aluminium foam. The aluminium foam was formed with three different compaction presses to verify the influence on density and, subsequently, crushing resistance.
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14

Valente, Goncalo, H. Ghasemnejad, and Sompong Srimanosaowapa. "Aluminium Foam-Filled Honeycomb Crash Absorbers." Materials Science Forum 1083 (April 6, 2023): 117–22. http://dx.doi.org/10.4028/p-i373o6.

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Honeycomb structures are frequently used as energy absorption devices in the automotive and aerospace industry. Many studies have been conducted to optimise these structures and improve crashworthiness behaviour. This paper attempts to improve the crashworthiness behaviour of a honeycomb crash box by filling the cells with open-cell aluminium foams. Experimental tests were conducted to develop the honeycomb and aluminium foam material model and, also, to validate the finite element model by experimental data. Foam-filling the crash box allows the control of the densification zone for different impact energies using open-cell aluminium foam, which shows the main novelty of this research. In the end, the optimised structure is presented concerning the optimum number of foam-filled cells and, also, to the aluminium foam’s density that best fits this application.
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15

Oliveira, Mariana Carvalho, and Rodrigo Estevam Coelho. "Development of Aluminium Foam through the Sintering Dissolution Process from the Alloy AA 3104." Materials Science Forum 899 (July 2017): 517–22. http://dx.doi.org/10.4028/www.scientific.net/msf.899.517.

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The increasing demand for lightweight materials capable to absorb impact energy has driven the growth of scientific research in the metallic foams field. This paper aims to investigate the possibility to obtain Al foams from recycled aluminium alloy through the sintering dissolution process (SDP) with sodium chloride (NaCl) as space holder. Aluminium scraps from AA 3104 alloy were powdered by high energy ball milling. Alloy powder was mixed with variable weight fraction of NaCl. The mixtures were die-pressed at room temperature and then sintered at 680°C. In the following step sintered parts were immersed in boiling water to obtain the aluminium foam. Foam microstructure was characterized by scanning electron microscopy and chemical composition was analyzed by energy dispersive spectroscopy. In addition, the residual NaCl was quantified and the foam density was determined by hydrostatic method. Best result was obtained with 60 wt% of NaCl, given a relative foam density of 30%, which in turn justifies further studies with metallic foams from aluminium scraps.
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16

Bangash, Muhammad, Graziano Ubertalli, Davide Di Saverio, Monica Ferraris, and Niu Jitai. "Joining of Aluminium Alloy Sheets to Aluminium Alloy Foam Using Metal Glasses." Metals 8, no. 8 (August 6, 2018): 614. http://dx.doi.org/10.3390/met8080614.

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Aluminium alloy foam is a lightweight material with high energy absorption properties and can potentially replace bulk Al-components. The aim of this work is to develop a brazing technique to join aluminium facing sheets to aluminium alloy foam to obtain aluminium foam sandwich panels for applications where high service temperature is a requirement. Al-6016 alloy sheets were brazed to aluminium alloy foam using two aluminium based (Al-Cu-Mg and Al-Si-Mg-Ti) metal glasses at 560 °C–590 °C in an argon atmosphere. Microstructure and microhardness profiles of the aluminium alloy sheet/aluminium alloy foam brazed joints were analysed using a microhardness tester and scanning electron microscope equipped with electron dispersion spectroscopy. A three-point bending test was conducted to study the flexural behaviour of the aluminium foam sandwich composite panels.
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17

Idris, Maizlinda Izwana, I. I. Md Ehsan, and S. H. Mohamed. "Effect of Organic Space Holder in Fabrication of Cloced-Cell Aluminium Foam." Key Engineering Materials 594-595 (December 2013): 780–85. http://dx.doi.org/10.4028/www.scientific.net/kem.594-595.780.

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In this work, the closed-cell aluminium foams were fabricated via powder metallurgy route with organic space holder which also known as carbamide (urea). Carbamide was added with aluminium powder at different compositions from 50wt% to 70wt%. Then the influences of sintering temperatures were also investigated at 500°C, 550°C and 600°C. Physical and mechanical tests were conducted on the fabricated closed cell aluminium foam samples. The result showed that the porosity inversely proportional with density, that means the porosity decreases as the density of the foam increased. Also, it was revealed that the highest compressive strength was obtained at sintering temperature of 550°C. However, the compressive strength of the closed-cell aluminium foam decreased at the sintering temperature of 600°C. This is due to the occurrence of oxidation problem. It can be concluded that carbamide can be proposed as one of the organic space holder material in the fabrication of closedcell aluminium foam. Then, the experimental parameters such as sintering temperature, type of space holder and composition gave great influence to the mechanical and physical properties of the fabricated closed-cell aluminium foam.
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18

Krčmářová, Nela, Jan Šleichrt, Tomáš Doktor, Daniel Kytýř, and Ondřej Jiroušek. "SEMI–AUTOMATED ASSESSMENT OF MICROMECHANICAL PROPERTIES OF THE METAL FOAMS ON THE CELL-WALL LEVEL." Acta Polytechnica CTU Proceedings 7 (December 9, 2016): 72. http://dx.doi.org/10.14311/app.2017.7.0072.

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Metal foams are innovative porous material used for wide range of application such as deformation energy or sound absorption, filter material, or microbiological incubation carrier. To predict mechanical properties of the metal foam is necessary to precisely describe elasto–plastic properties of the foam on cell–wall level. Indentation with low load is suitable tool for this purpose. In this paper custom designed instrumented microindentation device was used for measurement of cell-wall characteristics of two different aluminium foams (ALPORAS and ALCORAS). To demonstrate the possibility of automated statistical estimation of measured characteristics the device had been enhanced by semi-automatic indent positioning and evaluation procedures based on user-defined grid. Vickers hardness was measured on two samples made from ALPORAS aluminium foam and one sample from ALCORAS aluminium foam. Average Vickers hardness of ALPORAS foam was 24.465HV1.019 and average Vickers hardness of ALCORAS was 36.585HV1.019.
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19

Thinvongpituk, Chawalit, and Nirut Onsalung. "Crush Response of Polyurethane Foam-Filled Aluminium Tube Subjected to Axial Loading." Advanced Materials Research 875-877 (February 2014): 534–41. http://dx.doi.org/10.4028/www.scientific.net/amr.875-877.534.

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In this paper, the experimental investigation of polyurethane (PU) foam-filled into circular aluminum tubes subjected to axial crushing was presented. The purpose of this study is to improve the energy absorption of aluminium tube under axial quasi-static load. The aluminium tube was made from the AA6063-T5 aluminium alloy tubes. Each tube was filled with polyurethane foam. The density of foam was varied from 100, 150 and 200 kg/mP3P including with empty tube. The range of diameter/thickness (D/t) ratio of tube was varied from 15-55. The specimen were tested by quasi-static axial load with crush speed of 50 mm/min using the 2,000 kN universal testing machine. The load-displacement curves while testing were recorded for calculation. The mode of collapse of each specimen was analyzed concerning on foam density and the influence of D/t ratio. The results revealed that the tube with foam-filled provided significantly increment of the energy absorption than that of the empty tube. While the density of foam and D/t ratios increase, the tendency of collapse mode is transformed from asymmetric mode to concertina mode.
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20

Li, Q. M., R. N. Maharaj, and S. R. Reid. "Penetration resistance of aluminium foam." International Journal of Vehicle Design 37, no. 2/3 (2005): 175. http://dx.doi.org/10.1504/ijvd.2005.006706.

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21

Lanard, Jean-Louis, Jérôme Lestavel, and Sébastien Guinehut. "Aluminium foam filled crash boxes." ATZ worldwide 104, no. 11 (November 2002): 10–11. http://dx.doi.org/10.1007/bf03225185.

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22

Raihanah Hashim, Ummu, Aidah Jumahat, and Muhammad Fashan Md Ghazali. "Quasi-Static Indentation Properties of Aluminium Foam-Frp Sandwich Panel." International Journal of Engineering & Technology 7, no. 3.11 (July 21, 2018): 193. http://dx.doi.org/10.14419/ijet.v7i3.11.15959.

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Synthetic FRP have been used for many years in wide applications owing to their versatility and good performance. However, environmental problems caused by extensive use of polymeric materials arise mainly due to lack of landfill spaces and depletion of finite resources of fossil raw materials, such as petroleum or natural gas. Hence, materials derived from natural products are emerging as potential substitutes for petroleum-based material. The usage of natural fibre reinforced polymer (NFRP) composite have triggered considerable interest to explore the usefulness of this material. Excellent energy absorption of sandwich-structured composite made it a versatile structure used in various industries such transportation, automotive, building construction and marine. On top of that, the research data on aluminium foam as a core material in sandwich panel are limited and need to be further studied. This research is aimed to determine the quasi-static indentation properties of Basalt Fibre Reinforced Polymer/Aluminium Foam (BF-AF) sandwich panel and compare with the properties of Glass Fibre Reinforced Polymer/Aluminium Foam (GF-AF) sandwich panel. In this study, BFRP and GFRP composites with nanosilica were fabricated using vacuum bagging method. Aluminium foam was used as a core in the sandwich panel structure. The quasi-static indentation tests were performed using 10mm indenter and the specimen size was 50mm x 50mm with thickness of 3mm. The effect of aluminum foam on indentation properties were studied. The results showed that the addition of nanosilica enhanced the energy absorption, depth of penetration and damage area of the composites. The indentation properties of BF-AF were higher than those of GF-AF sandwich panel composites. Therefore, this research contributes to a new knowledge on the properties of aluminium foam-FRP composite materials
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23

Bovšková, H., and K. Míková. "Factors influencing egg white foam quality." Czech Journal of Food Sciences 29, No. 4 (August 10, 2011): 322–27. http://dx.doi.org/10.17221/435/2010-cjfs.

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The work was targeted on the study of egg white foam forming, including the influence of pH, aluminium ions, xanthan, maltodextrin, and phosphates on the whipping and stability of egg white foams. The whipping was studied with non pasteurised and pasteurised egg white using the blender with planet motion. Both types of egg white formed good foam in the acid area (pH below 4.5) and at neutral pH. Aluminium ions had a positive effect on the foam volume and stability, especially with the non pasteurised egg white. The addition of maltodextrin or saccharose decreased the foam volume but increased the foam stability. The addition of natrium pyrophosphate or natrium hexametaphosphate had a positive effect on the volume, density, and stability of foam. Foams with hexametaphosphate were applied into confectionary products.
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24

Babcsán, N., F. Garcia-Moreno, D. Leitlmeier, and John Banhart. "Liquid-Metal Foams – Feasible In Situ Experiments under Low Gravity." Materials Science Forum 508 (March 2006): 275–80. http://dx.doi.org/10.4028/www.scientific.net/msf.508.275.

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Metal foams are quite a challenge to materials scientists due to their difficult manufacturing. In all processes the foam develops in the liquid or semiliquid state. Liquid-metal foams are complex fluids which contain liquid metals, solid particles and gas bubbles at the same time. An X-ray transparent furnace was developed to monitor liquid metal foam evolution. Aluminium foams - similar to the commercial Metcomb foams - were produced by feeding argon or air gas bubbles into an aluminium composite melt. The foam evolution was observed in-situ by X-ray radioscopy under normal gravity. Drainage and rupture were evaluated during the 5 min foam decay and 2 min solidification. Argon blown foams showed significant drainage and cell wall rupture during the first 20 s of foam decay. Air blown foams were stable and neither drainage nor rupture occurred. We demonstrated the feasibility of experiments during parabolic flight or drop tower campaigns. However, the development of a foam generator for low gravity is needed.
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25

Altenaiji, Mohamed, Graham K. Schleyer, and Yo Yang Zhao. "Characterisation of Aluminium Matrix Syntactic Foams under Static and Dynamic Loading." Applied Mechanics and Materials 82 (July 2011): 142–47. http://dx.doi.org/10.4028/www.scientific.net/amm.82.142.

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Development of a lightweight, strong and energy-absorbing material that has potential application for the protection of vehicles and occupants against impact and blast, is a difficult challenge facing the materials community. Aluminium matrix syntactic foams will be investigated as a possible core material as part of a multi-layered protection system for military vehicles. Aluminium matrix syntactic foams are composite materials consisting of an aluminium matrix implanted with hollow or porous ceramic particles. This paper investigates the mechanical properties of aluminium matrix syntactic foam with different sizes of ceramic micro-spheres and different grades of aluminium, fabricated by the pressure infiltration method. The static crushing behaviour of the foam was investigated under two test conditions using an Instron 4505 machine. Results are compared and discussed. The dynamic compressive response was investigated using a drop-weight impact test machine. It was found that the particle size of the ceramic micro-spheres and the grade of the aluminium metal have a significant effect on the energy absorption capacity of the material. The compressive strength of the syntactic foam was found to increase with increasing compressive strength of the metal matrix.
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26

Hanssen, A. G., O. S. Hopperstad, and M. Langseth. "Bending of square aluminium extrusions with aluminium foam filler." Acta Mechanica 142, no. 1-4 (March 2000): 13–31. http://dx.doi.org/10.1007/bf01190010.

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27

Epasto, Gabriella, Fabio Distefano, Hozhabr Mozafari, Emanoil Linul, and Vincenzo Crupi. "Nondestructive Evaluation of Aluminium Foam Panels Subjected to Impact Loading." Applied Sciences 11, no. 3 (January 27, 2021): 1148. http://dx.doi.org/10.3390/app11031148.

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Aluminium foam sandwich structures have excellent energy absorption capacity, combined with good mechanical properties and low density. Some of the authors of this paper proposed an innovative Metallic Foam Shell protective device against flying ballast impact damage in railway axles. A closed-cell aluminium foam was chosen for the Metallic Foam Shell device. The main goal of this study was the experimental investigation of the impact responses of aluminium foam panels. Low velocity impact tests were carried out at different energies on different types of aluminium foam panels in order to investigate the effects of some parameters, such as core thickness, skin material and layer. Tests were conducted at repeated impacts on aluminium foam panels without and with skins made of aluminium and glass fibre-reinforced polymer. The experimental results were compared and the impacted panels were investigated by means of the nondestructive techniques ultrasonic phased array and digital radiography.
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28

Mat, Fauziah, K. A. Ismail, Masniezam Ahmad, Yaacob Sazali, and Inayatullah Othman. "Dynamic Axial Crushing of Empty and Foam-Filled Conical Aluminium Tubes: Experimental and Numerical Analysis." Applied Mechanics and Materials 566 (June 2014): 305–9. http://dx.doi.org/10.4028/www.scientific.net/amm.566.305.

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This paper presents the crushing behaviour of empty and foam-filled conical tubes under axial dynamic loading. A nonlinear finite element (FE) model was developed and validated against experiments. The validated model was subsequently used to assess the beneficial of foam filling with regards to the variation in filler densities and tube materials. The results obtained were further analyzed and compared with straight tubes. We aim to evaluate the critical effective point for different density of fillers in foam-filled tubes based on specific energy absorption (SEA) value. The SEA value was highest for foam-filled conical aluminium tube with aluminium foam filler, followed by straight aluminium tube, straight carbon steel tube and conical carbon steel tube. Moreover, the initial peak force was found lower in aluminium tubes than carbon steel tubes and lower in conical tubes than that in straight tubes. The combination of conical aluminium tube and aluminium foam filler successfully convey the beneficial of foam filling and thus signify that proper combination and selection of tube and filler is vital in assessing the effectiveness of foam-filled tubes.
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29

Emi Nor Ain Mohammad, Nurul, Aidah Jumahat, and Mohamad Fashan Ghazali. "Impact Properties of Aluminum Foam – Nanosilica Filled Basalt Fiber Reinforced Polymer Sandwich Composites." International Journal of Engineering & Technology 7, no. 3.11 (July 21, 2018): 77. http://dx.doi.org/10.14419/ijet.v7i3.11.15934.

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This paper investigates the effect of nanosilica on impact and energy absorption properties of sandwich foam-fibre composites. The materials used in this study are closed-cell aluminum (Al) foam (as the core material) that is sandwiched in between nanomodified basalt fiber reinforced polymer (as the face-sheets). The face sheets were made of Basalt Fibre, nanosilica and epoxy polymer matrix. The sandwich composite structures are known to have the capability of resisting impact loads and good in absorbing energy. The objective of this paper is to determine the influence of closed-cell aluminum foam core and nanosilica filler on impact properties and fracture behavior of basalt fibre reinforced polymer (BFRP) sandwich composites when compared to the conventional glass fibre reinforced polymer (GFRP) sandwich composites. The drop impact tests were carried out to determine the energy absorbed, peak load and the force-deflection behaviour of the sandwich composite structure material. The results showed that the nanomodified BFRP-Al foam core sandwich panel exhibited promising energy absorption properties, corresponding to the highest specific energy absorption value observed. Also, the result indicates that the Aluminium Foam BFRP sandwich composite exhibited higher energy absorption when compared to the Aluminium foam GFRP sandwich composite.
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30

Xu, A., T. Vodenitcharova, K. Kabir, E. A. Flores-Johnson, and M. Hoffman. "Finite element analysis of indentation of aluminium foam and sandwich panels with aluminium foam core." Materials Science and Engineering: A 599 (April 2014): 125–33. http://dx.doi.org/10.1016/j.msea.2014.01.080.

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31

Zhang, Xiao Qing, Xiao Qing Huang, Yi Ping Liu, Li Qun Tang, and Shan Li Liang. "Dynamic Mechanical Behaviors of Aluminium Foam Filled Circular Tubes under Transverse Compressive Load." Key Engineering Materials 340-341 (June 2007): 397–402. http://dx.doi.org/10.4028/www.scientific.net/kem.340-341.397.

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The experimental studies on the static and dynamic mechanical properties of aluminium foam material are presented first. Finite element models of four structures, including circular tube filled and bonded with aluminium foam, circular tube filled but unbonded with aluminium foam, single aluminium foam column and empty aluminium tube, under dynamic transverse compression are established by FEMB code. The dynamic mechanical behaviors of the structures are analyzed using LS-DYNA finite element code. The simulating results at certain cases are compared with experimental measurements and the satisfying consistency confirmed the validity of the model. The further numerical simulations are carried on the dynamic mechanical behaviors of four structures with outer tubes of different wall-thickness. It is found that aluminium foam filling can greatly improve the load-bearing capacity and energy-absorbing efficiency of structures. On the other hand, the effect of the aluminium outer tube on the structure is obvious compared with single aluminium foam column, in spite of the foam core and the tube are bonded together or unbonded. Another result can be seen that the bonding between the foam and outer tube affects the structure weakly for both thinner and thicker tubes. Finally, the simulating results show that the thicker wall of tube can improve the load-bearing capacity and energy-absorbing ability of the structure.
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32

Perrella, Gianpaolo, Diana Faiella, Giuseppe Brandonisio, Massimiliano Fraldi, and Elena Mele. "Design of Functionally Graded Beam of Aluminium Foam for Civil Structural Application." Key Engineering Materials 710 (September 2016): 65–70. http://dx.doi.org/10.4028/www.scientific.net/kem.710.65.

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Sandwich foam beams, made of solid skins and aluminium foam core, are usually applied in high-tech engineering field while they are not yet adopted in civil structures. An initial, explorative study on the structural application of metal foam is presented in this paper. The potentials of sandwich foam beams are studied through analytical models and parametric analyses; the sensitivity of the flexural response of the media to the total amount of pores and their spatial distribution are investigated. An analytical tool able to design functionally graded beams of metallic foam is presented and applied with reference some commercial aluminium foams. An experimental campaign is being planned to validate the presented results.
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33

Huang, Yao, Zexin Li, Lucai Wang, Leilei Sun, Xiaohong You, Wenzhan Huang, and Fang Wang. "Preparation and Heat Dissipation Properties Comparison of Al and Cu Foam." Metals 12, no. 12 (November 30, 2022): 2066. http://dx.doi.org/10.3390/met12122066.

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The space holder method, a kind of powder metallurgy method which can avoid the process of melting metal to prepare metal foams, has particular significance in solving the difficulty of preparing metal foams with high melting points. In this paper, Na2S2O3·5H2O, a novel space holder, was used to prepare aluminium foam and copper foam, which were then used to test the heat dissipation performance of the metal foams. We first prepared two kinds of cell structures for (spherical cell and composite cells) aluminium and copper foam, then, we compared the performances of their heat dissipation, and it was found that both the spherical cell metal foam and composite cell metal foam promoted heat dissipation in the environment of natural convection, and the difference between them was not apparent. In the environment of forced convection, the composite porous metal showed a better heat dissipation performance.
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34

Zhao, Ming Juan, Long Zhi Zhao, De Ying Li, Xiao Qing Zuo, and Jian Sheng Lu. "Simulation of Aluminium Foam Compressive Properties." Advanced Materials Research 97-101 (March 2010): 3033–37. http://dx.doi.org/10.4028/www.scientific.net/amr.97-101.3033.

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In this paper, the simulation of the commpress properties of Al foam was investigated by finite element methods. The simulation results show that the compressive yield strength of Al foam is consistent with the theoretical model of Gibson and Ashby. The yield strength of Al foam decrease with the increase of porosity, and the yield strength decreases significantly with the increase of porosity. The density of Al foam is proportional to the compressive strength. At a certain porosity, the ratio of sample size and the aperture have an extremely important effects on compressive behavior of aluminum foam. When 4 ≤ D / d <8, with the increase of the ratio of D / d, the plastic deformation plateau and the compressive strength of metal foam is increasing ; on the contrary ,when the ratio> 8, with the increase of the ratio, the plastic deformation plateau is decreasing, the compressive strength keeps constant.
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35

Mohd Razali, Razmi Noh, Bulan Abdullah, Muhammad Hussain Ismail, and Norhamidi Muhamad. "Characteristic of Modified Geometrical Open-Cell Aluminum Foam by Casting Replication Process." Materials Science Forum 846 (March 2016): 37–41. http://dx.doi.org/10.4028/www.scientific.net/msf.846.37.

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In this work, aluminium foams with modified geometry were successfully fabricated with a combination of dense and porous structure The main objective of this study were to determine the initial physical properties of aluminium foam with modified geometry in terms of density, porosity and morphology. Three different NaCl space holder sizes ranging from 1 mm to 3 mm were sieved and used to replicate the final pore size of aluminium foam. The samples were successfully produced through casting replication process. After densification, samples underwent water leaching in ultrasonic bath to remove completely the space holder. Results showed that porosity of the aluminium foam increased from 50 – 62% when the size of space holder was increased from 1 mm to 3 mm. The morphology showed clearly an integrated modified geometry between dense and inter-connected porous structure which is beneficial for applications that require combination properties of structural, thermal and mechanical properties.
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36

He, Xuan, Ji-li Rong, and Da-lin Xiang. "Damage Analysis of Aluminium Foam Panel Subjected to Underwater Shock Loading." Shock and Vibration 2017 (2017): 1–13. http://dx.doi.org/10.1155/2017/6031414.

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Underwater shock loading experiment device is the equipment which simulates underwater explosive shock wave through experiment. Underwater shock loading experiment device was used to conduct high-speed underwater impact on aluminium foam panel and its damage modes were studied in this paper. 3D dynamic DIC test system was used to collect and analyze real-time deformation of target board. After the experiment was completed, a numerical simulation of the series of experiment was conducted through ABAQUS finite element simulation and then a comparative analysis of the experiment was implemented. To comprehensively study damage modes of aluminium foam panel subjected to underwater shock loading, damage modes of aluminium foam panel at different shock speeds were studied. Results indicated that when a certain impact speed which could damage aluminium foam panel was reached, if the impact speed was low, aluminium foam panel would generate shear fracture at constrained boundary of flange; if the impact speed was high, aluminium foam panel would firstly generate fracture at the center and then generate shear fracture at constrained boundary of flange, and central fracture would generate three cracks.
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37

Peroni, M., G. Solomos, and V. Pizzinato. "Impact behaviour testing of aluminium foam." International Journal of Impact Engineering 53 (March 2013): 74–83. http://dx.doi.org/10.1016/j.ijimpeng.2012.07.002.

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38

Olurin, O. B., N. A. Fleck, and M. F. Ashby. "Indentation resistance of an aluminium foam." Scripta Materialia 43, no. 11 (November 2000): 983–89. http://dx.doi.org/10.1016/s1359-6462(00)00519-4.

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39

D'Alessandro, Vincenzo, Giuseppe Petrone, Sergio De Rosa, and Francesco Franco. "Modelling of aluminium foam sandwich panels." Smart Structures and Systems 13, no. 4 (April 25, 2014): 615–36. http://dx.doi.org/10.12989/sss.2014.13.4.615.

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40

Palano, F., R. Nobile, V. Dattoma, and F. W. Panella. "Fatigue behaviour of aluminium foam sandwiches." Fatigue & Fracture of Engineering Materials & Structures 36, no. 12 (May 3, 2013): 1274–87. http://dx.doi.org/10.1111/ffe.12063.

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41

Elnasri, I., and H. Zhao. "Impact perforation of aluminium Cymat foam." International Journal of Mechanical Sciences 150 (January 2019): 79–89. http://dx.doi.org/10.1016/j.ijmecsci.2018.10.016.

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42

Asavavisithchai, Seksak. "Effect of Powder Surface Oxide on Compressive Properties of Aluminium Foams." Advanced Materials Research 93-94 (January 2010): 219–22. http://dx.doi.org/10.4028/www.scientific.net/amr.93-94.219.

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The compressive properties of aluminium foams have been shown to be affected by the oxide content in aluminium powders. An increase in the oxide content results in increasing compressive strength and energy absorption of the foams. Oxides were found to form a network of crumpled films which retards the drainage of aluminium melt during foaming. The presence of larger oxide network in foam structure due to higher oxide content in aluminium powders can effectively strengthen the Plateau borders and cell walls of the foams.
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43

C., Domrong, and Srimanosaowapak S. "Production of aluminium casting with open-cell aluminium foam core." Journal of Chemical Engineering and Materials Science 8, no. 5 (August 31, 2017): 37–45. http://dx.doi.org/10.5897/jcems2017.0291.

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44

Hanssen, A. G., M. Langseth, and O. S. Hopperstad. "Static crushing of square aluminium extrusions with aluminium foam filler." International Journal of Mechanical Sciences 41, no. 8 (August 1999): 967–93. http://dx.doi.org/10.1016/s0020-7403(98)00064-2.

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45

An, Yang, Cui E. Wen, Peter D. Hodgson, and Chun Hui Yang. "Impact Response and Energy Absorption of Aluminium Foam-Filled Tubes." Applied Mechanics and Materials 152-154 (January 2012): 436–39. http://dx.doi.org/10.4028/www.scientific.net/amm.152-154.436.

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The effect of foam fillers on the impact behaviour and energy absorption of an aluminium tube is investigated. Both experimental test and computational simulation are employed in current study. For comparison, hollow tubes and foams are also tested, respectively. Foam filler is found to be ineffective in increasing the crushing loads of the composite tubes over the simple superposition of the crushing loads of hollow tube and foam. Also, foam filler increases the tendency for the concertina mode of folding. The foam fillers of tubes additionally result in increasing the SAE values over those of hollow tubes.
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46

Shen, Jian Hu, and Guo Xing Lu. "Dynamic Indentation and Penetration Properties of Aluminium Foams." Key Engineering Materials 340-341 (June 2007): 383–88. http://dx.doi.org/10.4028/www.scientific.net/kem.340-341.383.

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Failure of aluminium foams due to dynamic indentation and penetration is very common in their application such as light-weight structural sandwich panels, packing materials and energy absorbing devices. This requires a sound understanding of deformation and energy absorption mechanisms of the aluminium foams as well as the effect of impact velocity. In this study, a finite element analysis using ABAQUS is conducted for the dynamic indentation/penetration process of aluminium foams under a rigid flat-headed indenter. The indenter is pushed into the foam either at a constant velocity or with an initial velocity. Two mechanisms exist: compression of the foam ahead of the indenter and fracture along the indenter edge. Effect of impact velocity is noted on the size of a localized deformation and the total energy absorbed.
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47

Yamada, Yasuo, Takumi Banno, Zhen Kai Xie, and Cui E. Wen. "Compressive Deformation Behaviour of a Closed-Cell Aluminum." Materials Science Forum 510-511 (March 2006): 150–53. http://dx.doi.org/10.4028/www.scientific.net/msf.510-511.150.

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The mechanical properties of a closed-cell aluminium foam were investigated by compressive tests, and the deformation behaviours of the aluminium foams were studied using Xray microtomography. The results indicate that the deformation of the aluminium foams under compressive loading was localized in narrow continuous deformation bands having widths of order of a cell diameter. The cells in the deformation bands collapsed by a mixed deformation mechanism, which includes mainly bending and minor buckling and yielding. Different fractions of the three deformation modes led to variations in the peak stress and energy absorption for different foam samples with the same density. It was also found that the cell morphology affects the deformation mechanism significantly, whilst the cell size shows little influence.
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48

Baumeister, Joachim. "Methods for Filling Hollow Structures with Aluminium Foam." Materials Science Forum 638-642 (January 2010): 61–66. http://dx.doi.org/10.4028/www.scientific.net/msf.638-642.61.

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Aluminium foams produced according to the powder metallurgical/foaming agent process are currently being used in several industrial sectors, such as automotive, rail transport or machine tools. Nevertheless there still is a high further application potential to be exploited. Especially in hybrid structures, e.g. in automotive structures that are locally filled with aluminium foam, great improvements regarding the energy absorption capacity and the sound absorption behaviour can be obtained. In the present paper several methods that allow for filling or local filling of hollow structures are investigated and presented. The effect of the foam filling on the energy absorption behaviour of the hybrid structure is discussed. Similar effects were also observed in compression tests on foam filled hollow profiles. The results of these investigations are presented.
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49

Mohd Razali, Razmi Noh, Bulan Abdullah, Ismail Muhammad Hussain, Umi Kalsom Ahmad, Mohd Faizul Idham, and Abdullah Ramli. "Mechanical Properties of Aluminium Foam by Conventional Casting Combined with NaCl Space Holder." Applied Mechanics and Materials 393 (September 2013): 156–60. http://dx.doi.org/10.4028/www.scientific.net/amm.393.156.

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The purposes of this study were to determine the correlation of the aluminium foams mechanical properties in terms of the effect between its density and porosity as well as between its compressive strength and energy absorption of aluminium foam produced by space holder technique. The space holder used was NaCl particle with three different sizes and conditions. The space holders were completely filled the cavity prior pouring of molten aluminium by CO2 sand casting. Then, the samples underwent machining process to remove surface imperfection after casting, followed by water leaching in ultrasonic cleaner to remove the space holder. The higher the porosity, the lower the compressive strength but then again it acts as good energy absorption. Aluminium foam using NaCl size range of 10-15 mm has the highest energy absorption.
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50

Mines, Robert A. W. "Strain Rate Effects in Crushable Structural Foams." Applied Mechanics and Materials 7-8 (August 2007): 231–36. http://dx.doi.org/10.4028/www.scientific.net/amm.7-8.231.

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Structural foams are used as cores in sandwich construction. In the application of foreign object impact loading of sandwich structures, the core will suffer dynamic multi axial deformation and crush. This means that experimental study is required for the crush behaviour of structural foams at various strain rates, and numerical simulation foam models need to be calibrated with dynamic data. A number of foams are considered, namely Divinycell PVC foam, Rohacell PMI foam and Alporas aluminium foam. Also, new generation metallic micro lattice structures are discussed
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