492 results match your criteria Advanced Composite Materials[Journal]


Preparation and Characterization of Magnetite Talc ([email protected]) Nanocomposite as an Effective Adsorbent for Cr(VI) and Alizarin Red S Dye.

Materials (Basel) 2022 May 9;15(9). Epub 2022 May 9.

Institute of Organic Chemistry (IOC), Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 6, 76133 Karlsruhe, Germany.

In this work, the adsorption of Cr(VI) ions and the organic dye Alizarin Red S (ARS) was investigated using magnetite talc ([email protected]) nanocomposite. Different characterization techniques such as scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, X-ray Diffraction (XRD), and thermogravimetric analysis (TGA) were used to demonstrate the physical and chemical properties of the fabricated [email protected] nanocomposite. In addition, the adsorption isothermic, kinetic, and thermodynamic properties were illustrated. Read More

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Effects of the Interlayer Toughening Agent Structure on the Flow Behavior during the z-RTM Process.

Materials (Basel) 2022 May 2;15(9). Epub 2022 May 2.

School of Materials Science and Engineering, Shandong University of Technology, Zibo 255049, China.

In this paper, interlayer toughening composites were prepared by the z-directional injection RTM process (z-RTM), which has the advantage of increasing the interlaminar toughness and shortening the filling time and completely impregnating the fibers. The nonwoven fabrics and dot matrix structure material were used as ex situ interlayer toughening agents. The effect of the interlayer toughening agent structure on the resin flow behavior during the z-RTM process was investigated. Read More

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Cyclically Loaded Copper Slag Admixed Reinforced Concrete Beams with Cement Partially Replaced with Fly Ash.

Materials (Basel) 2022 Apr 25;15(9). Epub 2022 Apr 25.

Indian Plywood Industries Research Institute (IPIRTI), Bengaluru 560022, Karnataka, India.

Generally, the concrete with higher strength appears to produce brittle failure more easily. However, the use of mineral admixture can help in enhancing the ductility, energy dissipation, and seismic energy in the designed concrete. This paper presents energy absorption capacity, stiffness degradation, and ductility of the copper slag (CS) admixed reinforced concrete with fly ash (FA) beams subjected to forward cyclic load. Read More

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Drop Weight Impact Test on Prepacked Aggregate Fibrous Concrete-An Experimental Study.

Materials (Basel) 2022 Apr 25;15(9). Epub 2022 Apr 25.

Peter the Great St. Petersburg Polytechnic University, 195251 St. Petersburg, Russia.

In recent years, prepacked aggregate fibrous concrete (PAFC) is a new composite that has earned immense popularity and attracted researchers globally. The preparation procedure consists of two steps: the coarse aggregate is initially piled into a mold to create a natural skeleton and then filled with flowable grout. In this instance, the skeleton was completely filled with grout and bonded into an integrated body due to cement hydration, yielding a solid concrete material. Read More

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A Review on Reductions in the Stress-Intensity Factor of Cracked Plates Using Bonded Composite Patches.

Materials (Basel) 2022 Apr 24;15(9). Epub 2022 Apr 24.

Department of Engineering Management, College of Engineering, Prince Sultan University, P.O. Box 66833, Riyadh 11586, Saudi Arabia.

In aerospace engineering applications, lightweight material structures are considered to perform difficult service conditions and afford energy efficiency. Therefore, composite materials have gained popularity due to their light weights and high performances in structural design. Mechanical loads and environmental conditions primarily create damage to structural materials, thus numerous studies have considered the repair of the damaged structure. Read More

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Development and Experimental Assessment of Friction-Type Shear Connectors for FRP Bridge Girders with Composite Concrete Decks.

Materials (Basel) 2022 Apr 21;15(9). Epub 2022 Apr 21.

Advanced Structures and Composites Center, University of Maine, 35 Flagstaff Road, Orono, ME 04469, USA.

This paper details the development and experimental assessment of a friction-type connector, designed to transfer shear flow between the top flange of a fiber-reinforced polymer (FRP) tub girder and a composite concrete deck for bridge applications. In contrast with previously used bearing-type connectors, this system relies on a deformed FRP surface to transfer shear via direct interlock with the concrete deck. The connector is materially efficient, simple to fabricate, can be used with lower-grade structural or stainless-steel fasteners, and provides a high degree of interface stiffness. Read More

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Environmental and Economic Assessment of Repairable Carbon-Fiber-Reinforced Polymers in Circular Economy Perspective.

Materials (Basel) 2022 Apr 20;15(9). Epub 2022 Apr 20.

STIIMA-CNR-Institute of Intelligent Industrial Technologies and Systems for Advanced Manufacturing, National Research Council, Via Alfonso Corti 12, 20133 Milan, Italy.

The explosive growth of the global market for Carbon-Fiber-Reinforced Polymers (CFRP) and the lack of a closing loop strategy of composite waste have raised environmental concerns. Circular economy studies, including Life Cycle Assessment (LCA) and Life Cycle Costing (LCC), have investigated composite recycling and new bio-based materials to substitute both carbon fibers and matrices. However, few studies have addressed composite repair. Read More

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Low-Shrinkage Resin Matrices in Restorative Dentistry-Narrative Review.

Materials (Basel) 2022 Apr 18;15(8). Epub 2022 Apr 18.

Department of Advanced Oral Sciences and Therapeutics, School of Dentistry, University of Maryland, Baltimore, MD 21201, USA.

Dimethacrylate-based resin composites restorations have become widely-used intraoral materials in daily dental practice. The increasing use of composites has greatly enhanced modern preventive and conservative dentistry. They have many superior features, especially esthetic properties, bondability, and elimination of mercury and galvanic currents. Read More

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Identification of Multiple Mechanical Properties of Laminates from a Single Compressive Test.

Materials (Basel) 2022 Apr 18;15(8). Epub 2022 Apr 18.

National Key Laboratory of Science and Technology for National Defence on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin 150001, China.

In-plane elastic and interlaminar properties of composite laminates are commonly obtained through separate experiments. In this paper, a simultaneous identification method for both properties using a single experiment is proposed. The mechanical properties of laminates were treated as uncertainties and Bayesian inference was employed with measured strain-load curves in compression tests of laminates with embedded delamination. Read More

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Enhancement of Bond Performance of Advanced Composite Materials Used in Cable Bridge Structures Based on Tensile Tests.

Materials (Basel) 2022 Apr 18;15(8). Epub 2022 Apr 18.

Department of Structural Engineering Research, Korea Institute of Civil Engineering and Building Technology, 283, Goyang-daero, Ilsanseo-gu, Goyang 10223, Gyeonggi-do, Korea.

Structural steel and concrete are essential materials for the construction of social infrastructures. However, these materials undergo degradation over time, thereby causing steel corrosion. To address this problem, a fiber-reinforced polymer (FRP) is used for reinforcement. Read More

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3D Printing Application in Wood Furniture Components Assembling.

Materials (Basel) 2022 Apr 15;15(8). Epub 2022 Apr 15.

Faculty of Furniture Design and Wood Engineering, Transilvania University of Brasov, B-dul Eroilor, nr. 29, 500036 Brasov, Romania.

Additive manufacturing (AM) is used in many fields and is a method used to replace wood components or wood-jointed furniture components in the furniture industry. Replacing wood joints by 3D printed connectors would be an advantage, considering the fact that during the process of assembling furniture, the execution technology of the joints is difficult, time-consuming, and labor-intensive. Advanced technology of AM applied in furniture manufacturing helps the designers to create new concepts of product design, with no limits of shape, number of joints, color, or size. Read More

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Impact Resistant Structure Design and Optimization Inspired by Turtle Carapace.

Materials (Basel) 2022 Apr 15;15(8). Epub 2022 Apr 15.

National Key Laboratory of Science and Technology on Materials under Shock and Impact, Beijing Institute of Technology, Beijing 100081, China.

The turtle carapace has a high level of protection, due to its unique biological structure, and there is great potential to use the turtle carapace structure to improve the impact resistance of composite materials using bionic theory. In this paper, the chemical elements of the turtle carapace structure, as well as its mechanical properties, were investigated by studying the composition of the compounds in each part. In addition, the bionic sandwich structure, composed of the plate, core, and backplate, was designed using modeling software based on the microstructure of the keratin scutes, spongy bone, and the spine of the turtle carapace. Read More

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Effect of Al Layer Thickness on the Bonding and Mechanical Behavior of a Mg-(Al-)Ti Laminated Sheet Prepared by Hot-Rolling after Differential Preheating Treatment.

Materials (Basel) 2022 Apr 11;15(8). Epub 2022 Apr 11.

Institute for Advanced Materials, North China Electric Power University, Beijing 102206, China.

Mg-(Al-)Ti laminated sheets with large bonding interfaces were prepared by a differential temperature hot-rolling process, in which the preheating treatment of Ti was 25-100 °C higher than that of Mg. The rolled sheets contained different Al layer thicknesses (≤0.05 mm), and the thickness of the diffused region at the interface of 3-7 μm was formed by rolling at 175 °C. Read More

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Effect of Kaolin Geopolymer Ceramics Addition on the Microstructure and Shear Strength of Sn-3.0Ag-0.5Cu Solder Joints during Multiple Reflow.

Materials (Basel) 2022 Apr 8;15(8). Epub 2022 Apr 8.

Faculty of Materials Science and Engineering, "Gheorghe Asachi" Technical University of Iasi, 41 "D. Mangeron" Street, 700050 Iasi, Romania.

Solder interconnection in three-dimensional (3D) electronic packaging is required to undergo multiple reflow cycles of the soldering process. This paper elucidates the effects of multiple reflow cycles on the solder joints of Sn-3.0Ag-0. Read More

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Binary Binder for Cf/C-SiC Composites with Enhanced Mechanical Property.

Materials (Basel) 2022 Apr 8;15(8). Epub 2022 Apr 8.

School of Materials Science and Engineering, Shandong University of Technology, Zibo 255000, China.

Cf/C-SiC composites have become the preferred material for high-temperature load-bearing applications because of their low density, high strength, and excellent thermal-physical properties. Due to the composite's poor sintering performance, the sintering temperature and pressure required for the preparation of Cf/C-SiC by traditional methods are also relatively high, which limits its engineering application. Herein, based on the precursor-derived ceramic route and C/C composites material preparation process, a binary binder (coal pitch and polysilylacetylene) is developed, which combines a carbon source, SiC precursor, and semi-ceramic SiC filler organically. Read More

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Preference Index of Sustainable Natural Fibers in Stone Matrix Asphalt Mixture Using Waste Marble.

Materials (Basel) 2022 Apr 7;15(8). Epub 2022 Apr 7.

Research Centre for Environment, Economic and Social Sustainability (KASES), Institute for Environment and Development (LESTARI), Universiti Kebangsaan Malaysia (UKM), Bangi 43600, Malaysia.

The present study investigates the preference index of natural fibers such as sisal, coir, and rice straw fibers in stone matrix asphalt mixtures (SMA), using waste marble as filler. Waste marble was used as the filler in asphalt mixtures and was crushed by abrasion machine and sieved according to SMA filler requirements. The SEM topography and EDS analysis of sisal, coir, and rice straw fibers were also carried out. Read More

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Quantitative Analysis of the Calcium Hydroxide Content of EVA-Modified Cement Paste Based on TG-DSC in a Dual Atmosphere.

Materials (Basel) 2022 Apr 4;15(7). Epub 2022 Apr 4.

School of Materials Science and Engineering, Tongji University, Shanghai 201804, China.

The calcium hydroxide (Ca(OH)) content is one of the main indices of cement hydration degree. In order to accurately determine the calcium hydroxide content of ethylene and vinyl acetate (EVA) copolymer-modified cement paste, a dual atmosphere thermogravimetric method (first in an oxidizing atmosphere and then in an inert atmosphere) was used to track the mass loss and change in enthalpy by TG-DSC (simultaneous thermogravimetry and differential scanning calorimetry). The results showed that using the dual atmosphere thermogravimetric method, the source of mass loss can be distinguished. Read More

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Reducing Friction in Orthodontic Brackets: A Matter of Material or Type of Ligation Selection? In-Vitro Comparative Study.

Materials (Basel) 2022 Apr 3;15(7). Epub 2022 Apr 3.

Department of Orthodontics and Dentofacial Orthopaedics, Faculty of Dental Medicine, "Carol Davila" University of Medicine and Pharmacy, 020021 Bucharest, Romania.

(1) Background: Orthodontic appliances have changed and improved with the increasing demand for orthodontic treatment of the general population. Patients desire for shorter orthodontic treatments and for the wearing of more aesthetic devices has led to the technological development of orthodontic brackets; these were manufactured from aesthetic materials (ceramics, composite polymers) and presented different designs regarding the way archwires are ligated to the bracket. The aim of this study was to determine whether there were any differences between the static frictional forces generated by stainless steel (metallic) and polycrystalline alumina (ceramics) conventional and self-ligating brackets. Read More

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Switching Diagram of Core-Shell FePt/Fe Nanocomposites for Bit Patterned Media.

Materials (Basel) 2022 Mar 31;15(7). Epub 2022 Mar 31.

Department of Materials Science and Engineering, Xiamen Institute of Technology, Xiamen 361021, Fujian Province, China.

In the current work, a core-shell type exchange coupled composite structure was constructed by micromagnetic simulation with a phase FePt core and an iron shell. Four types of switching loops with magnetic domain structure evolution were demonstrated. Based on the simulation results, a switching type diagram was constructed, which displays various hysteresis loops as a function of core radius and shell thickness. Read More

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Bacterial Polyglucuronic Acid/Alginate/Carbon Nanofibers Hydrogel Nanocomposite as a Potential Scaffold for Bone Tissue Engineering.

Materials (Basel) 2022 Mar 28;15(7). Epub 2022 Mar 28.

Université Clermont Auvergne, Clermont Auvergne INP, CNRS, Institut Pascal, 63000 Clermont-Ferrand, France.

3D nanocomposite scaffolds have attracted significant attention in bone tissue engineering applications. In the current study, we fabricated a 3D nanocomposite scaffold based on a bacterial polyglucuronic acid (PGU) and sodium alginate (Alg) composite with carbon nanofibers (CNFs) as the bone tissue engineering scaffold. The CNFs were obtained from electrospun polyacrylonitrile nanofibers through heat treatment. Read More

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Many-Scale Investigations of the Deformation Behavior of Polycrystalline Composites: I-Machine Learning Applied for Image Segmentation.

Materials (Basel) 2022 Mar 28;15(7). Epub 2022 Mar 28.

School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China.

Our work investigates the polycrystalline composite deformation behavior through multiscale simulations with experimental data at hand. Since deformation mechanisms on the micro-level link the ones on the macro-level and the nanoscale, it is preferable to perform micromechanical finite element simulations based on real microstructures. The image segmentation is a necessary step for the meshing. Read More

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Fabrication and Characterization of Highly Efficient As-Synthesized WO/Graphitic-CN Nanocomposite for Photocatalytic Degradation of Organic Compounds.

Materials (Basel) 2022 Mar 28;15(7). Epub 2022 Mar 28.

Nanotechnology Research Centre (NTRC), The British University in Egypt (BUE), Suez Desert Road, El-Sherouk City 11837, Cairo, Egypt.

The incorporation of tungsten trioxide (WO) by various concentrations of graphitic carbon nitride (g-CN) was successfully studied. X-ray diffraction (XRD), Scanning Electron Microscope (SEM), and Diffused Reflectance UV-Vis techniques were applied to investigate morphological and microstructure analysis, diffused reflectance optical properties, and photocatalysis measurements of WO/g-CN photocatalyst composite organic compounds. The photocatalytic activity of incorporating WO3 into g-CN composite organic compounds was evaluated by the photodegradation of both Methylene Blue (MB) dye and phenol under visible-light irradiation. Read More

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Synthesis and Characterization of Sn/SnO/C Nano-Composite Structure: High-Performance Negative Electrode for Lithium-Ion Batteries.

Materials (Basel) 2022 Mar 27;15(7). Epub 2022 Mar 27.

Chemistry Division, King Khaled Military Academy, SANG, Riyadh 11495, Saudi Arabia.

Tin oxide (SnO) and tin-based composites along with carbon have attracted significant interest as negative electrodes for lithium-ion batteries (LIBs). However, tin-based composite electrodes have some critical drawbacks, such as high volume expansion, low capacity at high current density due to low ionic conductivity, and poor cycle stability. Moreover, complex preparation methods and high-cost carbon coating procedures are considered main challenges in the commercialization of tin-based electrodes for LIBs. Read More

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Fabrication of Nanoparticle/Polymer Composite Photocatalytic Membrane for Domestic Sewage In Situ Treatment.

Materials (Basel) 2022 Mar 27;15(7). Epub 2022 Mar 27.

Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education, International Center for Dielectric Research, Shaanxi Engineering Research Center of Advanced Energy Materials and Devices, School of Electronic Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China.

Photocatalytic technology using semiconductor catalysts is a promising candidate for light-polluted water treatment. In the past decades, TiO-related nanomaterials and photocatalytic devices have been applied for sewage ex-situ treatment. However, in situ photocatalytic technology using functional membranes is still needed for many large-scale outdoor scenarios. Read More

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Comparative Drug Release Investigations for Diclofenac Sodium Drug (DS) by Chitosan-Based Grafted and Crosslinked Copolymers.

Materials (Basel) 2022 Mar 24;15(7). Epub 2022 Mar 24.

Research Centre for Environment, Economic and Social Sustainability (KASES), Institute for Environment and Development (LESTARI), Universiti Kebangsaan Malaysia (UKM), Bangi 43600, Selangor, Malaysia.

The hydrogels responding to pH synthesized by graft copolymerization only and then concurrent grafting and crosslinking of monomer -isopropyl acrylamide (NIPAAM) and binary comonomers acrylamide, acrylic acid and acrylonitrile (AAm, AA and AN) onto chitosan support were explored for the percent upload and release study for anti-inflammatory diclofenac sodium drug (DS), w.r.t. Read More

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Investigation of Ramped Compression Effect on the Dielectric Properties of Silicone Rubber Composites for the Coating of High-Voltage Insulation.

Materials (Basel) 2022 Mar 22;15(7). Epub 2022 Mar 22.

Department of Electrical Engineering, College of Engineering, Taif University KSA, P.O. Box 11099, Taif 21944, Saudi Arabia.

The incorporation of inorganic oxide fillers imparts superior dielectric properties in silicone rubber for high-voltage insulation. However, the dielectric characteristics are influenced by the mechanical stress. The effects of ramped compression on the dielectric properties of neat silicone rubber (NSiR), 15% SiO microcomposite (SSMC), 15% alumina trihydrate (ATH) microcomposite (SAMC) and 10% ATH + 2% SiO hybrid composite (SMNC) are presented in this study. Read More

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Preparation and Properties of Electrodeposited Ni-B-Graphene Oxide Composite Coatings.

Materials (Basel) 2022 Mar 20;15(6). Epub 2022 Mar 20.

Center of Advanced Analysis and Gene Sequencing, Zhengzhou University, Zhengzhou 450001, China.

With the rapid development of modern industries, the surface quality and performance of metals need to be improved. Composite electrodeposition (co-deposition) has evolved as an important technique for improving the surface performance of metal materials. Herein, a new type of graphene oxide (GO)-reinforced nickel-boron (Ni-B) composite coating was successfully prepared on a 7075 aluminum (Al) alloy by co-deposition. Read More

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Si-Doped HfO-Based Ferroelectric Tunnel Junctions with a Composite Energy Barrier for Non-Volatile Memory Applications.

Materials (Basel) 2022 Mar 18;15(6). Epub 2022 Mar 18.

Department of Nano & Semiconductor Engineering, Korea Polytechnic University, Siheung 15073, Korea.

Ferroelectric tunnel junctions (FTJs) have attracted attention as devices for advanced memory applications owing to their high operating speed, low operating energy, and excellent scalability. In particular, hafnia ferroelectric materials are very promising because of their high remanent polarization (below 10 nm) and high compatibility with complementary metal-oxide-semiconductor (CMOS) processes. In this study, a Si-doped HfO-based FTJ device with a metal-ferroelectric-insulator-semiconductor (MFIS) structure was proposed to maximize the tunneling electro-resistance (TER) effect. Read More

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Finite Element Analysis of the Ballistic Impact on Auxetic Sandwich Composite Human Body Armor.

Materials (Basel) 2022 Mar 11;15(6). Epub 2022 Mar 11.

Department of Mechanical Engineering, International Islamic University, Islamabad 44000, Pakistan.

In this study, the ballistic impact behavior of auxetic sandwich composite human body armor was analyzed using finite element analysis. The auxetic core of the armor was composed of discrete re-entrant unit cells. The sandwich armor structure consisted of a front panel of aluminum alloy (Al 7075-T6), UHMWPE (sandwich core), and a back facet of silicon carbide (SiC) bonded together with epoxy resin. Read More

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Surface Modification of Ammonium Polyphosphate for Enhancing Flame-Retardant Properties of Thermoplastic Polyurethane.

Materials (Basel) 2022 Mar 8;15(6). Epub 2022 Mar 8.

IMDEA Materials Institute, C/Eric Kandel, 2, Getafe, 28906 Madrid, Spain.

Currently, the development of efficient and environmentally friendly flame-retardant thermoplastic polyurethane (TPU) composite materials has caused extensive research. Ammonium polyphosphate (APP) is used as a general intumescent flame retardant to improve the flame retardancy of TPU. In this paper, we developed a functionalized APP flame retardant ([email protected]). Read More

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