Homogenization method

This study proposes a constitutive mechanical law to model the behavior of the interface between a microcracked viscoelastic medium and an undamaged elastic body based on the homogenization method. The interface is modeled by a layer of zero thickness. The coupling between the homogenization technique and the Griffith’s theory is used to provide the effective behavior of the micro-cracked medium.

15p vithomson 02-07-2024 2 0   Download

Part 2 of ebook "Non-destructive testing in civil engineering 2000" provides readers with contents including: ultrasonic imaging of concrete members using an array system; influence of aggregates on ultrasonic elastic waves propagation in concrete; differential approach to ultrasonic testing of strength and homogeneity of concrete; measurements of thickness and crack depth in concrete by ultrasonic methods; basic study for an ultrasonic testing methods of PC grouting condition;...

381p tuongmothua 11-07-2024 1 1   Download

A high-speed dispersion homogenization-assisted alkali fusion-hydrothermal method was successfully developed for the preparation of NaA zeolite molecular sieve with excellent adsorption performance for ammonia nitrogen using solid waste fly ash. This study establishes a vital research foundation for the utilization of fly ash and the treatment of ammonia nitrogen wastewater, with great ecological and social benefits.

8p visergeyne 18-06-2024 0 0   Download

Ebook "Biomedical nanotechnology: Methods and protocols" is to provide an overview of biomedical nanotechnology, from the conception of novel materials in the laboratory to the application of such structures in the clinic. After a brief introductory chapter, the first section consists of protocol chapters which provide practical information on the synthesis of a variety of solution-phase and surface-bound nanomaterials and their application in sensing, imaging, and/or therapeutics; most chapters provide step-by-step instructions and insight into overcoming possible pitfalls and challenges.

447p dongmelo 27-05-2024 3 2   Download

In this study, we propose to build an equivalent 2D model to replace the 3D model of corrugated composite sheets, by the method of homogenization, to study the nonlinear mechanical behavior of corrugated core composite sheets. This model helps to significantly reduce the calculation time as well as the model building time. The model homogeneity is confirmed by comparing the numerical simulation results of the 2D model and the 3D model.

8p dathienlang1012 03-05-2024 1 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

In study "Effects of different beam theories on dynamic response of BFGSW beams under a moving mass" effects of different beam theories on dynamic response of bidirectional functionally graded sandwich (BFGSW) beams under a moving mass are investigated in this paper. The core of the beams is homogeneous while their two faces are of three-phase bidirectional functionally graded material.

10p dathienlang1012 03-05-2024 2 0   Download

TiO2 has strong photocatalytic activity, which can oxidize and decompose impurities on surfaces and in the air. Therefore, TiO2 is used as an additive in the self-cleaning coating and paint industries. In this work, SiO2 is used in the TiO2/SiO2 mixture as the nucleus to homogenize the dispersion components. TiO2 and SiO2 nanoparticles are synthesized by the sol-gel method combined with ultrasound that suits the size range of 10-30 nm.

14p dianmotminh02 03-05-2024 2 1   Download

In this work, the free vibration analysis of Timoshenko microbeams made of the Functionally Graded Material (FGM) on the Winkler–Paternak elastic foundation based on the Modified Coupled Stress Theory (MCST) is investigated. Material characteristics of the beam vary throughout the thickness according to the power distribution and are estimated though Mori–Tanaka, Hashin–Shtrikman and Voigt homogenization techniques.

13p dianmotminh02 03-05-2024 7 2   Download

Ebook "The chemical reactor from laboratory to industrial plant: A modern approach to chemical reaction engineering with different case histories and exercises" written by a former lecturer, addresses industrial chemical reaction topics, focusing on the commercial-scale exploitation of chemical reactions. It introduces students to the concepts behind the successful design and operation of chemical reactors, with an emphasis on qualitative arguments, simple design methods, graphical procedures, and frequent comparison of capabilities of the major reactor types.

574p tracanhphuonghoa1007 22-04-2024 5 2   Download

Ebook "Cellulose derivatives: Synthesis, structure, and properties" summarizes recent progress in cellulose chemistry. The last 10 years have witnessed important developments, because sustainability is a major concern. Biodegradable cellulose derivatives, in particular esters and ethers, are employed on a large scale. The recent developments in cellulose chemistry include unconventional methods for the synthesis of derivatives, introduction of novel solvents, e.g.

552p tracanhphuonghoa1007 22-04-2024 3 2   Download

Ebook "Porosity: Establishing the relationship between drying parameters and dried food quality" provides a comprehensive overview of porosity's effects on dried food quality. The factors influencing porosity during the various drying methods are explored in depth, as well as porosity's overall effect on food properties. The chemical reaction and stability of porosity are also covered, including sensory and mechanical properties. The work looks closely at the relationship between drying conditions, pore characteristics, and dried food quality.

81p tracanhphuonghoa1007 22-04-2024 2 2   Download

Part 2 book "Nuclear reactor physics" includes content: Neutron transport theory, neutron slowing down, resonance absorption, neutron thermalization, perturbation and variational methods, homogenization, nodal and synthesis methods, space–time neutron kinetics.

405p muasambanhan09 12-03-2024 2 0   Download

Part 1 book "Introduction to chemical reaction engineering and kinetics" includes content: Introduction, kinetics and ideal reactor models, experimental methods in kinetics - measurement of rate of reaction, development of the rate law for a simple system, complexsystems, fundamentals of reaction rates, homogeneous reaction mechanisms and rate laws, catalysis and catalytic reactions,... and other contents.

352p muasambanhan09 16-03-2024 3 1   Download

Part 1 book "Chemical process design and integration" includes content: The nature of chemical process design and integration, process economics, optimization, chemical reactors I – reactor performance, chemical reactors II – reactor conditions, chemical reactors III – reactor configuration, separation of homogeneous fluid mixtures I – distillation, separation of homogeneous fluid mixtures II – other methods, distillation sequencing.

272p muasambanhan08 01-03-2024 4 1   Download

Ebook "Hyperpolarization methods in NMR spectroscopy" is believed to be suitable both for scientists working in the field of nuclear hyperpolarization and for researchers expecting to get a first glimpse of the subject. In addition, spectroscopists entirely unfamiliar with the methods presented here might use this collection of texts as a source of thought-provoking impulses to add, if desired, sensitivity-enhancing features to their particular experiments.

311p nhanphanguyet 28-01-2024 6 2   Download

Ebook "Modelling electroanalytical experiments by the integral equation method" begins with models independent of spatial coordinates, goes on to address models in one dimensional space geometry and ends with models dependent on two spatial coordinates. Bieniasz considers both semi-infinite and finite spatial domains as well as ways to deal with diffusion, convection, homogeneous reactions, adsorbed reactants and ohmic drops.

409p nhanphanguyet 28-01-2024 4 2   Download

Part 3 book "The physics of nuclear reactors" includes content: Nuclear reactor reactivity, critical homogeneous reactor theory, neutron reflectors, heterogeneous reactors, fuel cycle physics, neutronic feedback, reactor kinetics, computation methods in diffusion theory

628p muasambanhan02 18-12-2023 5 3   Download

Validation method and homogeneity assessment of 6 biochemistry tests. Which were measured with AU 5,800 with these tests were performed on 5 other biochemistry instruments and 2 immuno biochemistry tests were performed on two Cobas e601 that were analyzed at Department of Biochemistry, 108 Military Central Hospital.

9p visoros 01-11-2023 4 1   Download

Emulsification method is one of the popular methods for producing materials used in biosensing, bioimaging and others, especially, drug delivery polymer systems in microsize and nanosize. The concrete techniques related to this method are emulsification, self-emulsification, in a combination with solvent evaporation process, homogenization, or ultranosication.

26p viannee 02-08-2023 3 3   Download