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n this work, pectin was extracted from pomelo peel while rice husk ash was used for silica recovery. The obtained CPS were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and Field emission scanning electron microscopy (FE-SEM).

8p viengfa 28-10-2024 2 0   Download

Folding plates with wavy shapes made of composite materials have been widely applied, hence designing this type of structure is significant in practice. In this research work, the results of static calculation of the sinusoidal corrugated composite plates will be analyzed.

9p viengfa 28-10-2024 0 0   Download

In this paper, the effect of continuous carbon fibers (CCF) on the stiffness of 3D printed frames is investigated. Fused deposition modelling (FDM) technology is employed to build three typical frames with 15% of CCF and 85% poliamide 12 which is combined 10% short carbon fibers (PA12-CF) for compress testing.

7p viengfa 28-10-2024 0 0   Download

In this paper, ZnO/CuO/Ag ternary composites were successfully synthesized by hydrothermal method using Zn(NO3)2.6H2O, Cu(NO3)2.3H2O and AgNO3. The composite samples were characterized using X-Ray diffraction (XRD), Scanning Electron Microscopy (SEM) and Raman spectroscopy.

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The main objective of this study is to predict accurately the loaddeflection of composite concrete bridges using two popular machine learning (ML) models namely Random Tree (RT) and Artificial Neural Network (ANN). Data from 83 track loading tests conducted on various bridges in Vietnam were collected and analyzed.

9p viengfa 28-10-2024 2 1   Download

The nonlinear dynamic buckling responses of functionally graded graphene platelet reinforced composite (FG-GPLRC) cylindrical and sinusoid panels with porous core are presented in this paper. The governing formulations are established by applying the nonlinear higher-order shear deformation theory (HSDT).

10p viengfa 28-10-2024 1 1   Download

Buckling and postbuckling behaviors of porous functionally graded graphene platelets-reinforced composite (porous FG-GPLRC) cylindrical shells with stiffeners subjected to external pressures are presented in this paper. Three distribution types of porosity in the shells are considered. The smeared technique for stiffeners is employed to model the mechanical behaviors of the stiffened shells.

13p viengfa 28-10-2024 2 1   Download

In the present paper, by using the higher-order shear deformation theory and the strain-displacement relationships of large deflection, the postbuckling analysis of the functionally graded graphene-reinforced composite laminated (FG-GRCL) parabola, sinusoidal, and cylindrical externally pressured panels is presented in detail.

10p viengfa 28-10-2024 2 1   Download

An analytical approach for nonlinear buckling of functionally graded graphene platelet reinforced composite toroidal shell segments is presented in this paper. The Ritz energy procedure is executed, and radial pressure– deflection expression is constituted to obtain the postbuckling strength and critical buckling pressure of the shells.

7p viengfa 28-10-2024 3 1   Download

The paper generalizes one practical tool for analyzing the structural dynamics for the high-speed railway bridge based on Cast3M open-source. Compared with the classical approach with the analytical formulation, KD-Railway developed by the finite element method allows defining the structure with complex geometry and considering a different type of structure (truss, cable, hybrid composite) or the structure-soil interaction.

10p viengfa 28-10-2024 2 1   Download

In this study, an artificial neural networkbased Bayesian regularization (ANN) model is proposed to predict the compressive strength of concrete. The database in this study includes 208 experimental results synthesized from laboratory experiments with 9 input variables related to temperature change and design material composition.

12p viengfa 28-10-2024 1 1   Download

The nonlinear buckling behavior of functionally graded graphene platelet reinforced composite (FG-GPLRC) cylindrical shells reinforced by ring, stringer and/or spiral FG-GPLRC stiffeners under torsional loads is studied by an analytical approach.

10p viengfa 28-10-2024 2 1   Download

The Axial Load Capacity (ALC) of Concrete-Filled Steel Tubular (CFST) structural members is regarded as one of the most crucial technical factors for the design of these composite structures.

17p viengfa 28-10-2024 1 1   Download

Agastache rugosa (Fisch. & C.A.Mey.) Kuntze, a medicinal and ornamental plant in the Lamiaceae family, is mostly found in East Asian countries such as Vietnam, Korea, China, and Japan. All parts of this plant are used as traditional medicines to treat abdominal pain, congestion, chills, diarrhea, nausea, and vomiting, and dispel dampness.

7p viling 11-10-2024 2 0   Download

The present research develops soybean curd biochar loading goethite (SBCG) and soybean curd activated carbon loading goethite (SACG), a magnetic material made from soybean curd residue and Fe precursor (α-FeOOH), for advanced oxidation processes (AOPs) of TCH in aqueous solutions.

9p viling 11-10-2024 0 0   Download

A study on the snail species composition and their cercariae was conducted in eight sixth-level canals across three inland districts in Ho Chi Minh City, namely Cu Chi, Hoc Mon, and Binh Chanh. The time of the study was in January 2022 (the dry season) and July 2022 (the wet season).

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The objective of this study was to investigate effect of the addition with different ratios Macadamia oil cake (MOC) on physical properties (color and texture), nutritional composition (moisture content, protein content, fat content, fiber and energy value) and sensory quality of cookies were investigated.

9p viling 11-10-2024 0 0   Download

The article will focus on calculating the stability parameter of the plate depending on the number of cracks, crack length, crack inclination angle, elastic foundation parameters as well as the ratio of material composition in the plate.

13p vibecca 01-10-2024 0 0   Download

Recently, the phase field modelling is widely used to model and simulate material damage. In present work, we present a framework of the topology optimization combined with the phase-field modelling with/ without interfacial damage for optimizing the damage resistance of the inclusion-matrix composites.

17p vibecca 01-10-2024 1 1   Download

The composite girder, which combines a steel beam with an ultra-highperformance concrete (UHPC) slab, has gained significant attention in recent years as a new type of bridge structure. However, accurately estimating the bending capacity of such girders remains a challenge, as practical methods are limited. In this article, the authors propose a theoretical approach based on the Euler-Bernoulli beam theory to determine the bending capacity of composite girders.

10p vibecca 01-10-2024 1 1   Download