Elemental composition

Part 2 of ebook "Steel-concrete composite structures: Stability and strength" provides readers with contents including: Chapter 6 - Steel-concrete composite columns (I); Chapter 7 - Steel-concrete composite columns (II); Chapter 8 - Design of composite bridges (consisting of reinforced concrete decking on steel girders); Chapter 9 - Composite box girder bridges; Chapter 10 - Ferrocement structures and structural elements;...

184p mothoiphong 28-06-2024 2 1   Download

The development a of highly efficient self-powered photodetector is a critical area of research for optoelectronic applications and the Internet of Things (IoT). In2S3 thin films grown using the spray pyrolysis technique were used rto develop self-powered photodetectors. The structural, optical, morphological, elemental, compositional and electrical characterization of the thin films were carried out for optimization.

15p visergeyne 18-06-2024 0 0   Download

In this report, SYGO:Eu3+ red phosphor have been successfully synthesized by sol-gel method. The X-ray diffraction results show that the sample has a cubic crystal structure, belonging to the space group Ia3d (230) without any doping. Scanning electron microscopy (FE-SEM) combined with EDS was performed to determine the microstructure and elemental composition of the fabricated phosphor.

9p viambani 18-06-2024 4 1   Download

This article presents two methods to determine pressing forces to the M1 copper plate. The first approach employs the upper-bound method, and the second method combines numerical simulation with a central composite design. The upper-bound method uses physical analysis to determine the deformation zone and establish the division of the rigid block model. The findings were identical to the slip-line solution method.

12p viambani 18-06-2024 3 1   Download

This paper investigates fracture mechanics in particle-reinforced composites by using the extended finite element method enhanced by the consecutive-interpolation quadrilateral element. These composite materials have discontinuous boundaries such as cracks, voids and hard inclusions.

18p viamancio 04-06-2024 0 0   Download

Part 1 of ebook "Finite element analysis and design of steel and steel-concrete composite bridges" provides readers with contents including: Chapter 1 - Introduction; Chapter 2 - Nonlinear material behavior of the bridge components; Chapter 3 - Applied loads and stability of steel and steel-concrete composite bridges;...

227p giangdongdinh 28-05-2024 3 2   Download

Part 2 of ebook "Finite element analysis and design of steel and steel-concrete composite bridges" provides readers with contents including: Chapter 4 - Design examples of steel and steel-concrete composite bridges; Chapter 5 - Finite element analysis of steel and steel-concrete composite bridges; Chapter 6 - Examples of finite element models of steel bridges; Chapter 7 - Examples of finite element models of steel-concrete composite bridges;...

456p giangdongdinh 28-05-2024 4 2   Download

In this paper, a new four - variable refined plate theory proposed by the authors themselves for dynamic analysis of stiffened functionally graded composite plates reinforced by carbon nanotubes (SFG-CNTRC) subjected to moving mass is researched developed. The geometrical modeling and governing equations of the system are obtained using the finite element method (FEM).

11p dathienlang1012 03-05-2024 0 0   Download

The present paper considers the composite plate resting on an elastic pinned subjected to harmonic loads. The plate element model with high-order shear deformation theory and finite element algorithm is proposed in order to buckling analysis of the plate. As a result, the buckling domain is determined. Moreover, the effect of geometric parameters, elastic pins, and materials on the buckling of the plate is comprehensively investigated.

10p dathienlang1012 03-05-2024 1 0   Download

In this paper, geometrical nonlinear flutter analysis of functionally graded carbon nanotubes reinforced composite plates is presented. The governing equations of the system are obtained using the Mindlin plate theory and von Karman geometric nonlinearity. The linear piston theory is utilized to determine the aerodynamic pressure. Applying the Hamilton principle, equations of motion of a system are derived in the matrix form, and then the finite element method is used to obtain the discretized equations.

11p dathienlang1012 03-05-2024 5 0   Download

The paper "Dynamic analysis of stiffened functionally graded composite plates reinforced by carbon nanotubes under blast loading" presents a study of the geometrical nonlinear dynamic of stiffened functionally graded composite plates reinforced by carbon nanotubes (SFG-CNTRC) subjected to blast loading. The governing equations of the system are obtained using the Mindlin plate theory and von Karman geometric nonlinearity.

11p dathienlang1012 03-05-2024 0 0   Download

In the paper "Finite element analysis for the composite sandwich plate using the homogenization method", we propose a homogeneous model for the composite sandwich plate. Accordingly, the 3D plate model will be replaced by a 2D homogeneous panel. Analytical calculations were performed for both models. The proposed model is confirmed by comparing the results obtained with the 3D plate model. The findings of this research will help us continue to build and finalize a homogenous model for a variety of structures.

7p dathienlang1012 03-05-2024 1 0   Download

Large deflections of functionally graded carbon nanotube-reinforced composite (FG-CNTRC) sandwich beams are studied in this paper by a nonlinear finite element procedure. The core of the beams is homogeneous while the two faces are of CNTRC material. The effective properties of the two CNTRC face sheets are determined by an extended rule of mixture. CNTs are reinforced into matrix phase through uniform distribution (UD) or four different types of functionally graded (FG) distribution, named as FG-X, FG-A, FG-V, FG-O.

10p dathienlang1012 03-05-2024 0 0   Download

This research presents Dynamic Stiffness formulations for studying dynamic behavior of composite inner/outer ring-stiffened cylindrical shells. The continuous elements investigated in this paper are cylindrical and ring elements. Base on dynamic stiffness matrix of the above elements, an assembling procedure is proposed to solve the problem of complex composite inner/outer ring-stiffened cylindrical shells.

9p dathienlang1012 03-05-2024 1 0   Download

An approach on the prediction of sound transmission loss for finite clamped composite sandwich plates with foam core is described in the paper. Sandwich plates are treated as being orthotropic and the apparent bending stiffness is calculated for the two principle directions. The apparent bending stiffness of sandwich plate is estimated by finite element calculation on beam elements cut from the sandwich plate.

10p dathienlang1012 03-05-2024 1 0   Download

In this research work, in order to obtain the deposition behavior of Ni-W-P coating on the Zr-4 surface, electroless Ni-W-P coating at different times was successfully deposited on Zr-4 alloy by an electroless plating technique. It is expected to provide a reliable basic experimental basis for the research of electroless plating of modified zirconium alloy.

11p dianmotminh02 03-05-2024 1 1   Download

In this work, Al-doped ZnO and Fe-doped ZnO nanoparticles have been synthesized through the coprecipitationannealing method to create new and safer UV filters for sunscreen. The effects of metal doping on phase composition, crystal structure, surface morphology, specific surface area, and elemental composition were characterized by X-ray diffraction, Raman spectroscopy, field emission electron scanning microscopy, nitrogen adsorption-desorption experiments and energy-dispersive X-ray spectroscopy, respectively.

8p dianmotminh02 03-05-2024 2 1   Download

The sediment quality assessment showed that trace element concentrations were lower than the limited values in the sediment quality guideline (QCVN 43:2017/BTNMT). According to the Igeo index, the sediments were not polluted by Cu, Pb, Zn, Cr, Fe, and As but were likely polluted by Hg and Mn in some sampling sites. Therefore, it is necessary to invest the future studies to assess the Hg and Mn concentration levels in these sites to protect the marine environment.

12p dianmotminh02 03-05-2024 6 1   Download

Ebook "Agronomic handbook: Management of crops, soils, and their fertility" covers both major agronomic fields. Containing essential data and information on the culture of the world's major agronomic grain, oil, fiber, and sugar crops grown on a wide range of soil types, Agronomic Handbook: Management of Crops, Soils, and Their Fertility serves as a practical reference on the management of crops and soils from planting to harvest.

482p tracanhphuonghoa1007 22-04-2024 2 2   Download

The study aims to provide an in-depth awareness of the loading capacity, deflection characteristics, and failure mechanisms exhibited by these girders by applying finite element analysis (FEA) techniques.

15p viohoyo 25-04-2024 2 2   Download