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Research Article | 01-December-2011

DESIGN OF AUTO-FOCUSING MODULES IN CELL PHONE CAMERAS

- same poles repel each other while opposite poles attract each other. Using a three-dimensional finite element method, we calculate electromagnetic and mechanical characteristics including current variation of coils, displacement and velocity of the moving part, and actuation force. Simulation results show that the proposed auto-focusing module achieves rapid response and low power consumption.

L. K. Lai, T. S. Liu

International Journal on Smart Sensing and Intelligent Systems, Volume 4 , ISSUE 4, 568–582

Research Article | 15-February-2020

Monitoring of the lung fluid movement and estimation of lung area using Electrical Impedance Tomography: A Simulation Study

Patients suffering from the acute respiratory distress syndrome (ARDS) requires thoracic electrical impedance tomography (EIT) for the monitoring their conditions ranging from dynamic shifting of body fluids to lung aeration right at the bedside.  More objectively, EIT-derived numeric parameters would help the physician to evaluate the state of the lung. Thus, here we have performed a Finite Element Method based simulation study for monitoring the condition of lungs and heart of ARDS

Deborshi Chakraborty, Madhurima Chattopadhyay

International Journal on Smart Sensing and Intelligent Systems, Volume 7 , ISSUE 5, 1–5

research-article | 30-November-2018

NUMERICAL ANALYSIS OF THE RESPONSE OF PILE-RAFT SYSTEMS CONSIDERING THE APPLICATION OF CEMENT AND POLYPROPYLENE FIBER TREATMENT

Ali HASANZADEH

Architecture, Civil Engineering, Environment, Volume 12 , ISSUE 3, 81–92

Article | 01-December-2014

DESIGN AND CONSTRUCTION OF LIGHT WEIGHT PORTABLE NMR HALBACH MAGNET

work focuses on the magneto-static simulation of NdFeB magnets arrangement and on the comparison with the measurement of the magnetic field strength and homogeneity in three dimensions (3D). The homogeneity of the magnetic field B0 is optimized with the help of CAD and mathematical software. Our results were also validated with a Finite Element Method (FEM). The simulation results of the strength and of the homogeneity of B0 field were compared to those obtained with a digital gaussmeter. The

Hung Dang Phuc, Patrick Poulichet, Tien Truong Cong, Abdennasser Fakri, Christophe Delabie, Latifa Fakri-Bouchet

International Journal on Smart Sensing and Intelligent Systems, Volume 7 , ISSUE 4, 1555–1578

Research Article | 13-December-2017

CHARACTERIZATION OF CRACKS AND DELAMINATIONS USING PWAS AD LAMB WAVE BASED TIME-FREQUENCY METHODS

crack oriented at different angles and on a titanium turbine blade of complex geometry with a fine surface crack. A geodesic based Lamb wave approach was employed to locate a crack in an aluminum plate. The existing geodesic algorithm is improved by replacing the Dijkstra's algorithm with the accurate fast marching method. Further, the interactions of A0 mode with multiple layer delaminations in glass fiber epoxy composite laminates were studied. Spectral Finite Element Method (SFEM) is used for

R. Gangadharan, C.R.L. Murthy, S. Gopalakrishnan, M.R. Bhat, D. Roy Mahapatra

International Journal on Smart Sensing and Intelligent Systems, Volume 3 , ISSUE 4, 703–735

Research Article | 13-December-2017

INVESTIGATION ON VELVET HAND ILLUSION USING PSYCHOPHYSICS AND FEM ANALYSIS

to obtain human mental models; the other is a finite element method (FEM) to evaluate the tactile stimulus that causes VHI. Based on psychophysical experiments using Thurstone's Paired Comparison, VHI strength depends on the distance between two adjacent wires, and VHI caused by wide spacing of wires is considerably stronger than that caused by narrow spacing. In FEM analysis, a mesh model of fingertips is produced to mimic an actual finger to evaluate the strain energy density (SED) because one

M. Ohka, Y. Kawabe, A. Chami, R. Nader, H. B. Yussof, T. Miyaoka

International Journal on Smart Sensing and Intelligent Systems, Volume 3 , ISSUE 3, 488–503

research-article | 30-November-2018

SHEAR BUCKLING RESISTANCE OF CANTILEVER GIRDERS WITH CORRUGATED WEB

Finite Element Method was used to simulate experimental investigations [17]. The FEM analysis was applied to numerically estimate design buckling resistance of the corrugated web of cantilever girders. The FEM numerical analysis of buckling resistance of cantilever girders was carried out using models with the web height ranging from hw = 500 to hw = 1500, and web thickness of 2.0, 2.5 and 3 mm. The method for estimating design shear buckling resistance of the corrugated web of cantilever girders

Witold BASIŃSKI

Architecture, Civil Engineering, Environment, Volume 12 , ISSUE 1, 63–79

Research Article | 20-February-2013

DEFORMATION FORECAST OF FLEXIBLE MATERIAL PROCESS BY SPLINE FINITE ELEMENT METHOD AND APPLICATION

Deng Yaohua, Li Bingjing, Chen Sicheng, Chen Jiyuan, Wu Liming

International Journal on Smart Sensing and Intelligent Systems, Volume 6 , ISSUE 1, 331–351

Article | 05-September-2020

INCREASING THE RESOURCE OF MILLING CUTTERS USED TO PROCESS THE LOCOMOTIVE WHEELSETS. PART 2: STUDY OF STRESSED-DEFORMED STATE

The article deals with the stress-strain state of the cutters used in the mills of a new design for the restoration of the working surfaces of locomotive wheels. A comparative analysis of stresses in the cutters was carried out using the finite element method, which showed a significant advantage of the new technical solution, the novelty of which is confirmed by the patent.

Aleksander SŁADKOWSKI, Yuriy PROYDAK, Vladislav RUBAN

Transport Problems, Volume 15 , ISSUE 3, 139–151

Article | 04-November-2019

INVESTIGATION OF DYNAMIC PROCESSES IN A GEARBOX WITH DEFECTS

The article presents theoretical research of a transmission system that allows examination of the dynamic processes evaluating different sizes of defects in gear tooth (0%, 20%, 50%, 80% of teeth width) and gaps between the connection of the gear teeth. The dynamics of the transmission is described using the finite element method and discreet elements. This paper presents and analyzes the results of mathematical experiments on this system.

Paulius BOGDEVIČIUS, Marijonas BOGDEVIČIUS, Olegas PRENTKOVSKIS

Transport Problems, Volume 14 , ISSUE 3, 5–16

Research paper | 13-December-2017

DEVELOPMENT AND CHARACTERIZATION OF SURFACE MICRO-MACHINED MEMS BASED VARACTOR

This paper presents complete behavioral analysis of a surface micro-machined MEMS varactor for frequency tuning application in voltage controlled oscillators in RF applications with high Quality factor and tunability. The dimensions of the MEMS device have been optimized with Finite Element Method based CoventorWare analysis and verified through lumped parameter analysis in Saber platform. The MEMS varactor has been fabricated with the PolyMUMPs process. The paper also describes the Mechanical

Subha Chakraborty, A. Bhattacharya, Ashesh Ray Chaudhuri, T.K. Bhattacharyya

International Journal on Smart Sensing and Intelligent Systems, Volume 3 , ISSUE 1, 94–107

Research Article | 12-December-2017

A LOW COST THREE-DIRECTIONAL FORCE SENSOR

In this work a low cost sensor has been developed to measure three-directional forces. The theory, design and sensor construction details are presented. It was constructed by using commercial strain gauges. Finite element method was adopted to optimize the structure dimensions, and improve the sensitivity of force sensor by distributing the sensing stress on the maximum strain positions. A hardware conditioning circuits was developed for the 3D force sensor. The calibration experiments were

S. Boukhenous

International Journal on Smart Sensing and Intelligent Systems, Volume 4 , ISSUE 1, 21–34

Article | 03-November-2017

CRACK IDENTIFICATION OF A ROTATING SHAFT WITH INTEGRATED WIRELESS SENSOR

F. Andrés Bejarano, Yi Jia, Frederick Just

International Journal on Smart Sensing and Intelligent Systems, Volume 2 , ISSUE 4, 564–578

Research Article | 24-February-2017

MODELLING STUDIES ON THE USE OF ALUMINIUM ALLOYS IN LIGHTWEIGHT LOAD-CARRYING CRANE STRUCTURES

the various structures. In the simulation a girder model was used and computed by the finite element method.

Damian GĄSKA, Tomasz HANISZEWSKI

Transport Problems, Volume 11 , ISSUE 3, 13–20

Article | 05-June-2013

ANALYSIS AND EXPERIMENTAL STUDY OF OPTIMAL SOIL MOISTURE SENSOR PROBE LENGTH

resistance model. The best probe structure was simulated by high frequency structure simulator software HFSS, which based on Maxwell’s equations and finite element method. According to experiment of soil water content by organic solution, the theoretical analysis of the best structure of probe was further validated.

Zhao Yandong, Nie Mingjun

International Journal on Smart Sensing and Intelligent Systems, Volume 6 , ISSUE 3, 849–866

Article | 03-November-2017

MODELING AND MEASUREMENT SYSTEM FOR MAGNETIC FIELD DISTRIBUTIONS IN BIOLOGICAL STRUCTURES

I. Marinova, V. Mateev, H. Endo, Y. Saito

International Journal on Smart Sensing and Intelligent Systems, Volume 2 , ISSUE 2, 262–278

Research Article | 15-February-2020

Numerical analysis of ultrasonic guided waves propagation in highly attenuative viscoelastic material

The propagation of ultrasonic guided waves in viscoelastic isotropic material has been investigated. Based on the plane theory, a numerical model of the guided waves propagating is developed in the frequency domain by employing the SFEM (spectral finite element method). To verify the proposed method, thin bitumen on the steel substrate is examined and compared with the single plate in terms of the dispersion and attenuation. From the dispersion and attenuation of the displacement curves, the

Li Hong, Wang Qingfeng

International Journal on Smart Sensing and Intelligent Systems, Volume 7 , ISSUE 5, 1–6

Article | 15-March-2021

COMPUTATIONAL AND EXPERIMENTAL STUDY OF THE STRENGTH OF A COMPOSITE DRIVE SHAFT

finite element method. Prototypes of composite drive shafts were produced for further laboratory and field tests. The author proposed a new design of composite drive shafts and a method for calculating the strength of the proposed design; the results were verified by bench laboratory and field tests. From the results of this work, conclusions about the performance of the developed structures and their applicability to racing cars were drawn.

Aleksandr BOLSHIKH

Transport Problems, Volume 16 , ISSUE 1, 75–86

Article | 01-June-2016

AN ELECTRICAL MODEL OPTIMIZATION FOR SINGLE CELL FLOW IMPEDANCE SPECTROSCOPY

. By removing these last impedances, it is possible to compare and model the electrical response of different electrodes geometries. Simulations, performed for 6 different electrodes geometries using Finite Element Method (FEM), were performed to check our assumptions. Results attest the validity of our model for cells with sizes comprised between 30 and 70% of the channel weigh. Finally, measurements performed with our microfluidic sensor show the same impedance variation distribution during the

J. Claudel, M. Nadi, O. Elmazria, D. Kourtiche

International Journal on Smart Sensing and Intelligent Systems, Volume 9 , ISSUE 2, 526–536

Article | 01-September-2014

PYROEFFECTS ON MULTIPHASE MAGNETO-ELECTRO-ELASTIC SENSOR PATCH BONDED ON MILD STEEL PLATE

pyroeffects using finite element method. This is studied at an optimal location on the plate, where the maximum electric and magnetic potentials of the MEE sensor are induced due to pyroeffects under various boundary conditions. It is assumed that plate and sensor are perfectly bonded to each other. The maximum pyroelectric and pyromagnetic effects on electric and magnetic potentials are observed when volume fraction is vf = 0.2. Additionally, the boundary conditions significantly influence the

P Kondaiah, K Shankar, N Ganesan

International Journal on Smart Sensing and Intelligent Systems, Volume 7 , ISSUE 3, 1134–1155

Research Article | 15-February-2020

Simulation and optimisation of homogeneous permanent magnet for portable NMR applications

gap between each ring and some others shim magnets. Our aim is to enhance the sensitive volume size while maintain the highest magnetic field. In this goal, we optimized the gap between the two rings and put two shim magnets rings in the bore of the structure. Optimizing the position of the shim magnets allow drastic improvement. The homogeneity of the magnetic field B0 is optimized with the help of CAD and mathematical software. Our results were confirmed with a Finite Element Method. As a result

Patrick Poulichet, Abdennasser Fakri, Christophe Delabie, Hung Dang Phuc, Tien Truong Cong, Latifa Fakri-Bouchet

International Journal on Smart Sensing and Intelligent Systems, Volume 7 , ISSUE 5, 1–6

Article | 27-August-2018

VIBRATION PROPAGATION IN SUBSOIL: IN-SITU TESTING AND NUMERICAL ANALYSES

element method. The most important factor influencing the propagation of impacts is the phenomenon of damping of the propagating wave in the soil. The mechanism of damping proposed by Rayleigh was used in the analysis, which, when selecting the appropriate parameters of the model, is able to realistically simulate the observed phenomena. The soil, in which the propagation of impulses occurred, was described with the use of linear-elastic model. Modulus of deformation correspond to the values of small

Stefan PRADELOK, Marian ŁUPIEŻOWIEC

Architecture, Civil Engineering, Environment, Volume 10 , ISSUE 1, 79–86

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