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Relevant bibliographies by topics / Foam. Foamed materials

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Academic literature on the topic 'Foam. Foamed materials'

Author: Grafiati

Published: 4 June 2021

Last updated: 4 February 2022

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Journal articles on the topic "Foam. Foamed materials"

1

Walbrück, Katharina, Felicitas Maeting, Steffen Witzleben, and Dietmar Stephan. "Natural Fiber-Stabilized Geopolymer Foams—A Review." Materials 13, no. 14 (July 17, 2020): 3198. http://dx.doi.org/10.3390/ma13143198.

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The development of sustainable, environmentally friendly insulation materials with a reduced carbon footprint is attracting increased interest. One alternative to conventional insulation materials are foamed geopolymers. Similar to foamed concrete, the mechanical properties of geopolymer foams can also be improved by using fibers for reinforcement. This paper presents an overview of the latest research findings in the field of fiber-reinforced geopolymer foam concrete with special focus on natural fibers reinforcement. Furthermore, some basic and background information of natural fibers and geopolymer foams are reported. In most of the research, foams are produced either through chemical foaming with hydrogen peroxide or aluminum powder, or through mechanical foaming which includes a foaming agent. However, previous reviews have not sufficiently addresses the fabrication of geopolymer foams by syntactic foams. Finally, recent efforts to reduce the fiber degradation in geopolymer concrete are discussed along with challenges for natural fiber reinforced-geopolymer foam concrete.

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Bhaskar, Dr Kiran. "Foam Concrete: A Review." International Journal for Research in Applied Science and Engineering Technology 9, no. VII (July 25, 2021): 2224–34. http://dx.doi.org/10.22214/ijraset.2021.36866.

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Foam concrete has the potential of being an alternative to ordinary concrete, as it reduces dead loads on the structure and foundation, contributes to energy conservation, and lowers the cost of production and labour cost during the construction and transportation. Presently the emerging trend is the use of foam concrete, which is a lightweight concrete having more strength-to-weight ratio with density varying from 300 to 2000 kg/m3. This reduces the dead load on the structure, cost of production and labour cost involved during the construction and transportation. Also, the large number of pores in the foamed concrete reduces the thermal and sound absorption, thus making the structure appropriate for all climatic conditions. The paper outlines a review of foamed concrete in terms of its definitions & classifications, materials, mix design, production of foamed concrete, properties of foamed concrete such as workability, density, compressive strength, porosity, fire resistance, shrinkage, water absorption, permeability. Apart from this, the paper outlines various applications of foam concrete.

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Sri, Sunarjono, and Hartadi Sutanto Muslich. "Investigating Foamed Bitumen Viscosity." Applied Mechanics and Materials 660 (October 2014): 254–58. http://dx.doi.org/10.4028/www.scientific.net/amm.660.254.

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Foamed bitumen is a binder of cold mix road recycling materials. It is necessary to understand the best foamed bitumen properties prior to mixing with aggregate materials. Viscosity is one of the important properties, which facilitate the foam to distribute across the aggregate phase in the mixing process, and form a well coated asphalt mix. Unfortunately, the understanding of foamed bitumen viscosity and its contribution in the development of mixture performance is still poorly understood. This paper discusses foamed bitumen viscosity which was explored based on theoretical studies and a series of laboratory investigation. Foamed bitumen was produced using bitumen Pen 70/100 at temperature of 180°C. The research method was developed in three activities, i.e. (1) the previous studies on the foamed bitumen rheology, (2) investigating flow behavior of foamed bitumen, and (3) estimating foamed bitumen viscosity using Kraynik equation.The research results can be summarized in the following three points. First, foamed bitumen consists of gas content and liquid bitumen, in which the value of foam viscosity increases with the gas content. Second, foam flow can be used to indicate the apparent foam viscosity. Foamed bitumen with a higher foaming water content (FWC) tends to have a decreased flow rate and hence higher apparent viscosity. Third, foamed bitumen viscosity estimated using Kraynik equation is affected by gas content and liquid bitumen viscosity. It was found that an ERm of around 35 (or at FWC of 6%) is the critical area of foam viscosity.

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Calabrese, Luigi, Stefano De Antonellis, Salvatore Vasta, Vincenza Brancato, and Angelo Freni. "Modified Silicone-SAPO34 Composite Materials for Adsorption Thermal Energy Storage Systems." Applied Sciences 10, no. 23 (December 5, 2020): 8715. http://dx.doi.org/10.3390/app10238715.

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In this work, novel silicone-SAPO34 composite materials are proposed for application in adsorption thermal energy storage systems. The innovative composite materials were obtained through a mold foaming process activated by a dehydrogenative coupling reaction between properly selected siloxane compounds. Morphology analysis by optical microscopy and measurement of the mechanical properties of the foamed materials at varying zeolite content demonstrated a quite homogeneous open-cell structure and good structural stability of the foam. Water adsorption isotherms of the adsorbent foams expanded in free space and inside paperboard were measured by a gravimetric adsorption apparatus, demonstrating that the presence of the polymeric fraction does not affect the adsorption capacity of the SAPO34 fraction added in the composite foam. Finally, main adsorption and thermodynamic properties of the proposed foam have been compared with those of other adsorbent materials, confirming the possible use of these new composite foams as adsorbent materials for adsorption thermal energy storage systems.

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Li, Jian, Xun Zhang Yu, and Kai Zhang. "Absorptive and Biodegraded Polyurethane Foamed Urea." Advanced Materials Research 152-153 (October 2010): 131–35. http://dx.doi.org/10.4028/www.scientific.net/amr.152-153.131.

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In this article, konjac flour, super absorptive resin and pellet urea were added into flexible polyurethane foamed plastic with polyether polyol and isocyanate as the raw materials by a new water-foamed technology to manufacture a kind of absorptive and biodegraded polyurethane foamed fertilizer. Polyurethane foam was used as a carrier material and konjac flour was used as a biodegradable agent. The results showed that the slow-release velocity of urea could be controlled by regulating the densities of polyurethane foams, the content of konjac flour and super absorptive resin. The carrier material could be degraded konjac flour by naturally.

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Cao, Kai, De Ming Wang, and Xin Xiao Lu. "The New Fire Prevention Materials Using in the Coal Fire Zones-Foamed Gel." Advanced Materials Research 383-390 (November 2011): 2705–9. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.2705.

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Coal fires are emerging as a global threat with significant economic, social and ecological impacts, besides the loss of energy resources those fires cause air and water pollution and emit enormous amounts of green house gases (carbon dioxide and methane), how to prevent and extinct the fires has been a worldwide issue. According to the respective limitation and characteristic of gel fire prevention materials and foam fire prevention materials, a new thinking of foamed gel coal fire prevention materials is put forward creatively. Foamed gel that includes the characteristic of gel and foam possessed the property of accumulation. It also has the performance of sealing and secluding oxygen. This paper describes the composition and characteristic of foamed gel, as well as the laboratory production process. For large coal fire zones, the new fire prevention materials (Foamed Gel) have a broad application prospect.

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Liu, Baodong, Xinjie Huang, Shuo Wang, Dongmei Wang, and Hongge Guo. "Performance of Polyvinyl Alcohol/Bagasse Fibre Foamed Composites as Cushion Packaging Materials." Coatings 11, no. 9 (September 10, 2021): 1094. http://dx.doi.org/10.3390/coatings11091094.

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This work was designed to determine the mechanical properties and static cushioning performance of polyvinyl alcohol (PVA)/bagasse fibre foam composites with a multiple-factor experiment. Scanning electron microscopy (SEM) analysis and static cushioning tests were performed on the foamed composites and the results were compared with those of commonly used expanded polystyrene (EPS). The results were as follows: the materials had a mainly open cell structure, and bagasse fibre had good compatibility with PVA foam. With increasing PVA content, the mechanical properties of the system improved. The mechanical properties and static cushioning properties of the foam composite almost approached those of EPS. In addition, a small amount of sodium tetraborate obviously regulated the foaming ratio of foamed composites. With increasing sodium tetraborate content, the mechanical properties of foamed composites were enhanced. The yield strength and Young’s modulus of the material prepared by reducing the water content to 80.19 wt% were too high and not suitable for cushioned packaging of light and fragile products.

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Li, Mei Juan, Kun Xiang, Qiang Guo Luo, Qiang Shen, and Lian Meng Zhang. "Preparation and Density Control of PMMA Microcellular Foams via Supercritical Carbon Dioxide Foaming." Key Engineering Materials 616 (June 2014): 242–46. http://dx.doi.org/10.4028/www.scientific.net/kem.616.242.

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Microcellular polymeric foam is a new class of materials which has been widely used in many industries. The foaming of polymethyl metacrylate (PMMA) using supercritical carbon dioxide (ScCO2) which is inexpensive and environmental friendly has been studied to better understand the foaming process. The pieces of PMMA are put into a saturation vessel of which temperature and pressure are kept constant. Supercritical carbon dioxide (ScCO2) at temperature between 65 °C and 105 °C and pressure between 8 MPa and 16 MPa is used as a foaming agent. After saturation of carbon dioxide, rapid decompression of ScCO2 saturated PMMA yields expanded microcellular foams. The densities of foamed PMMA materials are tested by true density analyzer, while the microstructures of a variety of density foamed PMMA materials are characterized by scaning electron microscopy (SEM). The cell size and cell density are calculated via image analysis. The effect of the process condition on the cell morphologies and mass density of the foam is investigated by considering the solubility of carbon dioxide in PMMA. The relationship between the mass density of foamed PMMA (ρ) and foaming temperature (T) and pressure (P) are respectively certained quantificationally.

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Bledzki, A. K., M. Rohleder, H. Kirschling, and A. Chate. "Microcellular Polycarbonate with Improved Notched Impact Strength Produced by Injection Moulding with Physical Blowing Agent." Cellular Polymers 27, no. 6 (November 2008): 327–45. http://dx.doi.org/10.1177/026248930802700601.

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Polycarbonate has the reputation of having a tough breaking behaviour, but it is often unknown that this applies only to special conditions. The impact strength of polycarbonate depends on the temperature, the thickness (with a tough brittle transition at thickness increases), contribution of notch tip radius, impact speed, physical blowing agent, molecular weight of the polymer and the processing parameters. Research results indicated that microcellular foams produced by injection moulding with physical blowing agent (MuCell™ Technology by Trexel) shows significant higher notched impact strength than compact polycarbonate, if the compact material is brittle under the same test parameters. However, if the compact polycarbonate breaks toughly, the notched impact strength of the foamed material is always lower. Therefore, it is highly important to pay attention to the test parameters and conditions when comparing the toughness of the foamed with the compact material. The toughness of microcellular foams shows similar properties to PC/ABS and PC/PP blend systems, which provides the possibility to combine the higher impact strength with the advantages of microcellular foaming like weight reduction, lower shrinkage, shorter cycle times, lower clamp forces and reduced melt viscosity. In order to use technologies and conditions which are applied in the polymer industry, all materials were produced by an injection moulding process. Special processing technologies like gas counter pressure and precision mould opening were used in order to reach microcellular foam structures with cell diameters around 10 μm. These technologies yield exactly adjustable foam morphologies. Special morphologies are required to improve the notched impact strength of the foamed material. Two different equivalent models were extracted from the analyses, which indicate significant higher notched impact strength than the compact material under the same test conditions. The knowledge of the ideal foam morphologies enables the industry to produce foamed materials with improved mechanical properties.

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Pop-Iliev, Remon, and Chul B. Park. "Melt Compounding Based Rotational Foam Molding Technology for Manufacture of Polypropylene Foams." Journal of Reinforced Plastics and Composites 21, no. 2 (January 2002): 101–20. http://dx.doi.org/10.1177/0731684402021002285.

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This paper is intended to provide an engineering understanding of the technological potentials for processing polypropylene (PP) foams in rotational foam molding. A process proposal, based on the melt compounding material-preparation approach, capable of producing completely foamed, single-layer, single-piece PP products in rotational foam molding, is disclosed in detail. It comprises dispersing a chemical blowing agent (CBA) in the PP matrix using a twin-screw compounder, pelletizing the obtained expandable composition, and then producing foams in an uninterrupted rotational foam molding cycle by using the pre-compounded foamable pellets. Several PP grades were deliberately selected to cover a wide range of melt flow rates (MFR), starting from 5.5 up to 35 dg/min. After the raw materials participating in the study were characterized using thermal analysis instrumentation, different foamable compositions were formulated in order to prepare both 3-fold and 6-fold foamable pellets from each PP grade. The optimal foam processing strategies were identified via a systematic experimental parametric search. Foams with the best cell morphologies were obtained out of the high melt strength PP grades. In addition, the experimental results revealed that the cell morphology of the processed PP foams is not as good as that of respective PE foams. However, the cell morphologies of the PP foams processed by using the melt compounding-based approach demonstrated significant improvements in comparison with those processed by using the dry blending-based approach.

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Dissertations / Theses on the topic "Foam. Foamed materials"

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Miller, Erin Ashley. "Structure and mechanics of solid foam /." Thesis, Connect to this title online; UW restricted, 2005. http://hdl.handle.net/1773/9633.

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Stone, Robert Michael 1957. "Shear modulii for cellular foam materials." Thesis, The University of Arizona, 1989. http://hdl.handle.net/10150/277020.

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The use of cellular foam as a core material in light-weight structural applications is of considerable interest. However, advances in this technology have been limited due to the lack of information concerning the macroscopic material behavior of cellular foams. Of particular interest in the design of composite structures is the shear modulus, G, of the core material, which must be established with a high degree of accuracy. Current ASTM test methods for shear modulus determination were researched and found inadequate for testing cellular foam materials. The difficulty in testing foam and the inaccuracies associated with the standard test methods established the need for the development of a test method for these materials. The test method (test fixture and test procedure) developed for cellular foam materials is presented. The design of the test fixture and the finite element analysis performed to determine fixture accuracy are discussed in detail. Additionally, the test procedure is presented, as well as the results for the 32 tests performed.

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Kavi, Halit Güden Mustafa. "Investigation of compression mechanical behaviour of aluminum foam filled metal tubes/." [s.l.]: [s.n.], 2004. http://library.iyte.edu.tr/tezler/master/makinamuh/T000488.pdf.

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Di, Prima Matthew Allen. "Thermo-mechanical and micro-structural characterization of shape memory polymer foams." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/28178.

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Thesis (M. S.)--Materials Science and Engineering, Georgia Institute of Technology, 2009.
Committee Chair: Gall, Ken; Committee Co-Chair: McDowell, David; Committee Member: Guldberg, Robert; Committee Member: Sanderson, Terry; Committee Member: Shofner, Meisha; Committee Member: Tannenbaum, Rina.

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Anghelescu, Mihnea S. "Thermal and Mechanical Analysis of Carbon Foam." View abstract, 2009. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:3353337.

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Rickles, Stacey A. "Microstructural and compressive properties of a metal/ceramic syntactic foam." Thesis, Georgia Institute of Technology, 1989. http://hdl.handle.net/1853/19677.

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Zhang, Lizhong. "Physical, mechanical, thermal, and viscoelastic properties of water-blown rigid polyurethane foam containing soy flours /." free to MU campus, to others for purchase, 1998. http://wwwlib.umi.com/cr/mo/fullcit?p9924871.

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Gopalan, Sriram. "Quasi-static and dynamic mechanical characterization of reinforced polyurethane foam /." free to MU campus, to others for purchase, 2003. http://wwwlib.umi.com/cr/mo/fullcit?p1418024.

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Heavner, Mark E. "Pitch foam production by use of physical blowing agents." Morgantown, W. Va. : [West Virginia University Libraries], 2006. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=4769.

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Thesis (M.S.)--West Virginia University, 2006.
Title from document title page. Document formatted into pages; contains xi, 107 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 98-101).

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Bhavsar, Harshad. "Effect of partially defatted soy flour on physical and microbial properties of water-blown rigid polyurethane foam /." free to MU campus, to others for purchase, 2004. http://wwwlib.umi.com/cr/mo/fullcit?p1422911.

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Books on the topic "Foam. Foamed materials"

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Perkowitz, S. Universal foam: From Cappuccino to the cosmos. New York: Walker & Co., 2000.

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Wendle, Bruce C. Structural foam: A purchasing and design guide. New York: M. Dekker, 1985.

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Britton, Robin. Update on mouldable particle foam technology. Shawbury, Shrewsbury, Shropshire: Smithers Rapra, 2009.

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Stevenson, Paul. Foam engineering: Fundamentals and applications. Chichester, West Sussex, UK: Wiley, 2012.

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Scott, Lawrence W. Performance of RETIMET metal foam vents on explosion-proof enclosures. Washington, D.C: U.S. Dept. of the Interior, Bureau of Mines, 1992.

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Bomberg, Mark. Spray polyurethane foam in external envelopes of buildings. Lancaster, Pa: Technomic Pub., Co., 1998.

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Symposium on Cellular Metals and Polymers (2004 Fürth, Germany). Cellular metals and polymers: CMaP : proceedings of the Symposium on Cellular Metals and Polymers : sponsored by the Deutsche Forschungsgemeinschaft (DFG) : held October 12-14, 2004, in Fürth, Germany. Uetikon-Zuerich, Switzerland: Trans Tech Publications Ltd, 2005.

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8

Metal matrix syntactic foams: Processing, microstructure, properties and applications. Lancaster, Pennsylvania: DEStech Publications, Inc., 2015.

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International Conference on Cellular Metals and Metal Foaming Technology (2003 Berlin, Germany). Cellular metals: Manufacture, properties, applications. Edited by Banhart John 1958-, Fleck N. A, and Mortensen A. Berlin: MIT Pub., 2003.

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European Conference on Advanced Materials and Processes (6th 1999 Munich, Germany). Metal matrix composites and metallic foams. Edited by Clyne T. W, Simancik F, Deutsche Gesellschaft für Materialkunde, and Federation of European Materials Societies. [Germany]: Deutsche Gesellschaft für Materialkunde, 2000.

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Book chapters on the topic "Foam. Foamed materials"

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Shutov, Fjodor A., G. Henrici-Olivé, and S. Olivé. "Starting Materials." In Integral/Structural Polymer Foams, 13–25. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-662-02486-7_2.

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Kazmina, O. V., and B. S. Semukhin. "Foam-Glass-Crystal Materials." In Structural Nanocomposites, 143–64. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-40322-4_6.

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Oger, L., J. P. Troadec, A. Gervois, and N. N. Medvedev. "Computer Simulations and Tessellations of Granular Materials." In Foams and Emulsions, 527–46. Dordrecht: Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-015-9157-7_31.

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Höhler, Reinhard, and Sylvie Cohen-Addad. "Foams." In Fluids, Colloids and Soft Materials: An Introduction to Soft Matter Physics, 355–68. Hoboken, NJ, USA: John Wiley & Sons, Inc, 2016. http://dx.doi.org/10.1002/9781119220510.ch18.

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Solórzano, Eusebio, and Miguel A. Rodriguez-Perez. "Polymeric Foams." In Structural Materials and Processes in Transportation, 375–413. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2013. http://dx.doi.org/10.1002/9783527649846.ch11.

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Baumeister, Joachim, and Jörg Weise. "Metal Foams." In Structural Materials and Processes in Transportation, 415–44. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2013. http://dx.doi.org/10.1002/9783527649846.ch12.

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Krämer, Christina, Torsten Kowald, and Reinhard Trettin. "Three-Phase-Foams as New Lightweight Materials and Their Use in Foam Concretes." In Nanotechnology in Construction, 435–39. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-17088-6_57.

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Carter, C. Barry, and M. Grant Norton. "Surfaces, Nanoparticles, and Foams." In Ceramic Materials, 231–52. New York, NY: Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4614-3523-5_13.

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Gupta, Nikhil, Steven Eric Zeltmann, Dung D. Luong, and Mrityunjay Doddamani. "Testing of Foams." In Handbook of Mechanics of Materials, 2083–122. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-10-6884-3_50.

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Gupta, Nikhil, Steven Eric Zeltmann, Dung D. Luong, and Mrityunjay Doddamani. "Testing of Foams." In Handbook of Mechanics of Materials, 1–40. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-6855-3_50-1.

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Conference papers on the topic "Foam. Foamed materials"

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Mosanenzadeh, Shahrzad Ghaffari, Hani E. Naguib, Chul B. Park, and Noureddine Atalla. "Development of Bio-Based Foams With Improved Acoustic and Mechanical Performance." In ASME 2012 Noise Control and Acoustics Division Conference at InterNoise 2012. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/ncad2012-1262.

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Interest in noise control has been growing in recent years and efforts are under way to improve the acoustic performance of existing sound absorbers and also to replace the non-recyclable ones with environmentally friendly materials. Present study describes the research on fabrication, improvement of acoustic absorption and enhancement of mechanical strength of bio-based open-cell foams. Through this study, highly porous open-cell Polylactide (PLA) foams were fabricated by a new fabrication method combining particulate leaching technique and compression molding. Foamed structures were fabricated with PLA and Polyethylene glycol (PEG) with salt as the particulate. Pore size of the foam was controlled by salt particulates and higher interconnectivity was achieved by the co-continuous blending morphology of PLA matrix with water-soluble PEG. As a result of novel secondary porous structure, acoustic performance of PLA foams was successfully improved. One issue with application of bio-based open-cell foams is the weak structure. To improve mechanical characteristics of PLA foams, different polymer composites of PLA and Polyhydroxyalkanoate (PHA) were foamed and characterized in terms of acoustic performance, mechanical properties and foam morphology. Polymers used in this study are bio-based which is of great importance considering huge amount of foams used as acoustic absorbers in various industries.

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Guarino, S., and V. Tagliaferri. "Fabrication of Aluminium Foam Components by Using Powder Compact Melting Method." In ASME 7th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2004. http://dx.doi.org/10.1115/esda2004-58607.

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Recently, closed cell cellular metals have been gaining a very high interest due to their unique characteristic applications in various technology domains. They combine the advantages of a metal with the structural advantages of foam. Among these, aluminium foams have created a great interest due to their light weight structure and their various applications in the automotive, aerospace and allied industries. Aluminium foam possesses high stiffness and low density, it has good energy-absorbing properties making it good for crash-protection and packaging and it has attractive heat-transfer properties that permit to use these materials to cool electronic equipment and as heat exchangers in engines. However, its manufacturing techniques and characterization methods need more attention. The inadequate knowledge on the physical phenomena governing the foaming process does not allow to obtain products with repeatable characteristics. In this paper aluminium foams in various fabrication components were produced by applying the powder compact melting method. In particular metal powders (AlSi7) and powdered gas-releasing blowing agents (TiH2) were mixed and subsequently pressed to obtain a foamable precursor material. The resulting precursor was then foamed by heating it up to above its melting point. Experimental tests were performed to study the fabrication of aluminum foam components and with the extent of optimize the pressing parameters of the foamable precursor material, the foaming temperature and the heating rate during foaming. It was studied the effects of geometrical discontinuities in the mould (such as holes, restrictions, etc) on the evolution and on the morphology of metal foams.

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Jaskulski, Maciej, Artur Lewandowski, and Ireneusz Zbiciński. "Mathematical modeling of moisture evaporation in co-current foam spray drying." In 21st International Drying Symposium. Valencia: Universitat Politècnica València, 2018. http://dx.doi.org/10.4995/ids2018.2018.7252.

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Two models of foam drying are presented in the paper: single droplet drying and perfect mixing of phases spray drying models to describe mechanism of drying of droplet containing bubble. Analysis of drying curves shows that in constant drying rate period and in the falling drying rate period, evaporation rate decreases due to particle shrinkage and increasing of resistance of moisture diffusion inside the solid crust. Increase of gas pressure in the bubble might cause particle breakage. Slight differences between theoretical and experimental results caused by disregarding broken particles in the simulations proves accuracy of the developed model. Keywords: spray drying, modeling, foamed materials, particle morphology

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Jaskulski, Maciej, Artur Lewandowski, and Ireneusz Zbiciński. "Experimental analysis of particle breakage and powder morphology in foam spray drying." In 21st International Drying Symposium. Valencia: Universitat Politècnica València, 2018. http://dx.doi.org/10.4995/ids2018.2018.7251.

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The paper presents results of experiments of gas admixing foam spray drying of maltodextrin in co-current spray tower. Significant effect of feed foaming on particle sphericity, angle of repose, apparent and bulk density, Hausner ratio and porosity was found. Number of broken particles achieved 60 % for high foaming gas rate (GLR) and inlet air temperature due to particle overheating and bubble expansion. Analysis of the experiments results allowed to determine optimal range of operating conditions to reduce number of damaged particles, to around 15 % for the highest GLR and to minimize product degradation. Keywords: foamed materials, gas admixing, powder properties, powder quality

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Hoyt Haight, Andrea, Peter Rand, Ronald Allred, Tetyana Shkindel, Paul McElroy, and Paul Willis. "Open-Celled Rigid Foams for Self-Deploying Foam Antenna Structures." In 45th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics & Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2004. http://dx.doi.org/10.2514/6.2004-1657.

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Tseng, Charles C., Ruth L. Sikorski, R. Viskanta, and Ming Y. Chen. "On the Role of Radiation in Low Density Silicon Carbide Foams." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-86338.

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There are a variety of foams that can be used in thermal protection and/or thermal insulation systems. At high temperature (> 1000 K) thermal radiation may be important or dominate heat transfer in a foam; however, studies based on more detailed thermal radiation analysis are limited. In this paper foams are considered to be semitransparent, because radiation can penetrate through the pore (or void) space and/or foam skeleton (ligament), depending on the materials from which the foams are made. Of particular interest of this study is to understand how the properties of foam material such as its density, mean cell size, etc. affect the radiative transfer through silicon carbide (SiC) foams. In the paper, the dimensionless strut diameter is considered an important parameter of foams, and the radiative properties of the foams are analyzed by Mie scattering theory. The attenuation/extinction behavior of SiC foams can be considered as a function of the dimensionless strut diameter of the foam. The results reveal that the foam properties can significantly reduce radiative heat transfer through the high temperature foam used for the thermal protection.

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Madawela, Raghvan, Zhenyu Ouyang, Gefu Ji, Guoqiang Li, and Samuel Ibekwe. "Mechanical Properties of New Hybrid Materials: Metallic Foam Filled With Syntactic Foam." In ASME 2011 Pressure Vessels and Piping Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/pvp2011-57725.

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Syntactic polymer foam has received intensive attention and extensive application due to its remarkable low cost, lightweight, mechanical properties as well as its thermal, acoustic properties for multifunctional purpose. Electrically conductive polymers have the advantages of light weight, resistance to corrosion, good processability, and tunable conductivity. In a recent separated study, we proposed a novel conductive polymer which was based on the metallic foam filled with syntactic polymer foam. In this study, instead of focusing its unique multi-physical properties, we focus on characterizing the mechanical properties of this new conductive syntactic foam. Before the exploration of this new hybrid foam, an understanding of the mechanical properties is quite necessary. To this end, hybrid foams were prepared by varying the volume fractions of microballoons in the syntactic foam and types of microballoon materials: glass and polymer microballoons. The metallic foam adopted in this work was based on aluminum with an average relative density of 7% (the porosity is about 93%). Both compressive and bending tests were conducted. The current test results may provide the valuable baseline and also facilitate the further understanding of this hybrid foams as a core material in the advanced sandwiched pipe/pressure vessel structures featured by lightweight, impact tolerant, self-monitoring, thermal and acoustic insulation, and electromagnetic shielding.

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Peroni, Lorenzo, Massimiliano Avalle, and Marco Peroni. "The Mechanical Behaviour of Aluminium Foam Structures in Different Loading Conditions." In ASME 8th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2006. http://dx.doi.org/10.1115/esda2006-95704.

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Foams are one of the best solutions for energy absorption enhancement. Many types of materials can be produced in the form of foams, including metal and polymers. Among metal foams, the most advanced are aluminum based. They couple lightweight with good properties, not only mechanical, but also, for example, good thermal stability. Among the various aspects still to be investigated regarding their mechanical behavior, there is the influence of a hydrostatic state of stress on yield. Unlike metals, the hydrostatic component affects yields. Therefore different loading conditions have to be considered to fully identify the material behavior. Another important issue in foam structure design is the analysis of composite structures. To this purpose an aluminum foam has been examined (FOAMINAL, provided by IFAM within the 6th Framework Programme European Project APROSYS). The material behavior has been investigated by subjecting the foam to different stress state conditions (uniaxial, hydrostatic, pure deviatoric, and various combinations). Results obtained in various kinds of test will be presented: uniaxial compression, in quasi-static and dynamic conditions loading the components into a SHPB device, tension, bending, and shear loading. Moreover, composite structures were made by assembling the foam into aluminum cold extruded closed section tubes (in 6060 aluminum). All the results show that the energy absorption capability of the composite structures is much greater than the sum of the energy absorbed by the two components, the foam and the tube.

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Campbell, J. E., G. D. Hibbard, and H. E. Naguib. "Design, Fabrication and Mechanical Characterization of Pyramidal Periodic Cellular Metal/Polyurethane Foam Hybrid Materials." In ASME 2008 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. ASMEDC, 2008. http://dx.doi.org/10.1115/smasis2008-318.

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A new type of hybrid material was designed and fabricated by reinforcing periodic cellular metals (PCMs) with rigid polyurethane (PU) foams. A pyramidal PCM geometry and various densities of two-phase rigid polyurethane foam were used to fabricate three different hybrid materials. These novel hybrid materials may find useful application as cores in sandwich structures. By increasing the density of the polyurethane foam used in the PCM/PU foam hybrids, the stiffness of the hybrid increased allowing the stiffness to be tailored for a specific application. Furthermore, the strength of the hybrids was greater than that of the PCM or foam alone, and in most configurations the strength was greater than the sum of the strength of the PCM and the polyurethane foam. Next, the resilience of the hybrids was greater than that of the PCM or foam alone and was also greater than the sum of the resilience of the PCM and foam. Finally, the impact energy at which surface failure would occur was greater in the hybrid samples than the foams or the PCM and was found to increase with increasing foam density.

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Tseng, Charles C., Ruth L. Sikorski, R. Viskanta, and Ming Y. Chen. "Effect of Radiation on Heat Transfer in Open-Cell Foams at High Temperature." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-62530.

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Abstract:

There are a variety of foams that can be used in thermal protection and/or thermal insulation systems. At high temperature (> 1000 K) thermal radiation may be important or dominate heat transfer in the foam; however, studies based on more detailed thermal radiation analysis are limited. In this paper foams are considered to be semitransparent, because radiation can penetrate through the pore (or void) space and/or foam skeleton (solid matrix), depending on the materials from which the foams are made. Of particular interest of this study is to understand how the properties such as foam material its density, porosity, etc. affect thermal and radiant energy transfer. Physical and mathematical models are developed to account for conduction and radiation (absorption, emission and scattering) in the porous material. The spectral extinction coefficients of SiC foams are measured experimentally in the laboratory at room temperature, and the radiative transfer equation is solved using the spherical harmonics P1 and the Rosseland diffusion approximations. Parametric calculations have been carried out, and the results are reported in the paper for a range of parameters characterizing heat transfer in SiC foams of different porosities to identify desirable conditions for effectively reducing heat transfer in potential thermal protection concepts.

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Reports on the topic "Foam. Foamed materials"

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Bowerman, Cody, Devin Roberts, and Michael Quinn. Determining Outgassing of Foam Packaging Material. Office of Scientific and Technical Information (OSTI), July 2019. http://dx.doi.org/10.2172/1581152.

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Kenneth Kremer, Anthony Liszkiewicz, and James Adkins. Development of Steel Foam Materials and Structures. Office of Scientific and Technical Information (OSTI), October 2004. http://dx.doi.org/10.2172/840932.

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Cady, Carl M. Load Temperature Response of PDMS foam materials. Office of Scientific and Technical Information (OSTI), January 2013. http://dx.doi.org/10.2172/1062151.

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Domeier, Linda. H1259 Container Foams: Performance Data on Aged Materials. Office of Scientific and Technical Information (OSTI), May 2002. http://dx.doi.org/10.2172/796142.

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Dowds, Sabrina, and Than-Tam Truong. ANALYSIS OF MATERIAL PROPERTIES OF AGED RIGID POLYURETHANE FOAM. Office of Scientific and Technical Information (OSTI), July 2019. http://dx.doi.org/10.2172/1545502.

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Olin Perry Norton, Ronald A. Palmer, and W. Gene Ramsey. ENHANCEMENT OF STRUCTURAL FOAM MATERIALS BY INCORPORATION OF GASIFIER SLAG. Office of Scientific and Technical Information (OSTI), March 2006. http://dx.doi.org/10.2172/882579.

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Abelow, Alexis Elizabeth, and Joseph Gabriel Cordaro. Thermal Decomposition of Mixed Foams used as Encapsulant Materials. Office of Scientific and Technical Information (OSTI), October 2016. http://dx.doi.org/10.2172/1599534.

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Schembri, Philip E., and Matthew W. Lewis. Calibrating the Abaqus Crushable Foam Material Model using UNM Data. Office of Scientific and Technical Information (OSTI), February 2014. http://dx.doi.org/10.2172/1122031.

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Davis, Stephen C. Novel Elastomeric Closed Cell Foam - Nonwoven Fabric Composite Material (Phase III). Fort Belvoir, VA: Defense Technical Information Center, October 2008. http://dx.doi.org/10.21236/ada513665.

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Zywicz, E. The Development of DYNA3D Material Model 67 - Hyperelastic Elastomeric Foam With Viscoelasticity. Office of Scientific and Technical Information (OSTI), January 2015. http://dx.doi.org/10.2172/1179428.

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