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Use of Taguchi method for high energy ball milling of CaCO3 Int. J. Mech. Mater. Eng. Pub Date : 2022-02-04 Radune, Maya, Lugovskoy, Svetlana, Knop, Yaniv, Yankelevitch, Avigdor
Taguchi’s method was applied to investigate the effect of main high energy ball milling (HEBM) parameters: milling time (MT), ball to powder weight ratio (BPWR), and milling speed (MS) on the CaCO3 crystallite size. The settings of HEBM parameters were determined by using the L9 (33) orthogonal experiments array (OA). The as-received and milled powders were characterized by X-ray diffraction (XRD)
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Experimental investigation into the effect of surface roughness and mechanical properties of 3D-printed titanium Ti-64 ELI after heat treatment Int. J. Mech. Mater. Eng. Pub Date : 2021-11-17 Lebea, L., Ngwangwa, H. M., Desai, D., Nemavhola, F.
The initial stability after implantology is paramount to the survival of the dental implant, and the surface roughness of the implant plays a vital role in this regard. The characterisation of surface topography is a complicated branch of metrology, with a huge range of parameters available. Each parameter contributes significantly towards the survival and mechanical properties of three-dimensional
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Injection-molded natural fiber-reinforced polymer composites–a review Int. J. Mech. Mater. Eng. Pub Date : 2021-11-10 Rabbi, M. S., Islam, Tansirul, Islam, G. M. Sadiqul
For the last couple of decades, researchers have been trying to explore eco-friendly materials which would significantly reduce the dependency on synthetic fibers and their composites. Natural fiber-based composites possess several excellent properties. They are biodegradable, non-abrasive, low cost, and lower density, which led to the growing interest in using these materials in industrial applications
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Plane wave in non-local semiconducting rotating media with Hall effect and three-phase lag fractional order heat transfer Int. J. Mech. Mater. Eng. Pub Date : 2021-09-26 Kaur, Iqbal, Singh, Kulvinder
This paper deals with the propagation of the plane wave in a nonlocal magneto-thermoelastic semiconductor solid with rotation. The fractional-order three-phase lag theory of thermoelasticity with two temperatures has been applied. When a longitudinal wave is incident on the surface z = 0, four types of reflected coupled longitudinal waves (the coupled longitudinal displacement wave, the coupled thermal
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Microstructural and mechanical studies of feedstock material in continuous extrusion process Int. J. Mech. Mater. Eng. Pub Date : 2021-09-06 Desta, Tariku, Sinha, Devendra Kumar, Ramulu, Perumalla Janaki, Tufa, Habtamu Beri
The challenge encountered in continuous forming process is the variation in mechanical strength of product formed with respect to process variables like extrusion wheel speed and diameter of product. In this research article, the micro-structural investigation of the aluminum (AA1100) feedstock material of 9.5-mm diameter has been carried out at various extrusion wheel speeds and diameter of product
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CFD simulations of gearboxes: implementation of a mesh clustering algorithm for efficient simulations of complex system’s architectures Int. J. Mech. Mater. Eng. Pub Date : 2021-08-05 Mastrone, Marco Nicola, Concli, Franco
In the last decade, computer-aided engineering (CAE) tools have become a determinant factor in the analysis of engineering problems. In fact, they bring a clear reduction of time in the design phase of a new product thanks to parametrical studies based on virtual prototypes. The application of such tools to gearboxes allowed engineers to study the efficiency and lubrication inside transmissions. However
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Numerical model development to predict the behaviour of infant/neonate crash dummy restrained inside of an incubator under deceleration Int. J. Mech. Mater. Eng. Pub Date : 2021-07-31 Rabiee, A., Ghasemnejad, H., Hitchins, N., Watson, J., Roberts, J., Khoory, M.
In this paper, advanced finite element (FE) methods are developed to investigate the effect of deceleration on the crash dummy test complied with British Standard Engineering (BS EN 1789). These techniques, which are related to material modelling, joints and contacts, offer an advanced numerical model representing an infant incubator with all complex boundary conditions and design contents. It is shown
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Prediction of buckling force in hourglass-shaped specimens Int. J. Mech. Mater. Eng. Pub Date : 2021-06-29 Ragnar Gjengedal, Ørjan Fyllingen, Vojtech Heinik
It is important to avoid buckling during low-cycle fatigue testing. The buckling load is dependent on the specimen shape, material properties, and the testing machine. In the present investigation of hourglass-shaped specimens the importance of the diameter to radius of curvature is examined. Diameters of 5 and 7 mm are examined with a ratio of radius of curvature to diameter of 4, 6, and 8. The machine
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Friction and contact temperature in dry rolling-sliding contacts with MoS2-bonded and a-C:H:Zr DLC coatings Int. J. Mech. Mater. Eng. Pub Date : 2021-06-15 Stefan Hofmann, Mustafa Yilmaz, Enzo Maier, Thomas Lohner, Karsten Stahl
Gearboxes are usually lubricated with oil or grease to reduce friction and wear and to dissipate heat. However, gearbox applications that cannot be lubricated with oil or grease, for example in the space or food industry, are commonly lubricated with solid lubricants. Especially solid lubricants with a lamellar sliding mechanism like graphite and molybdenum disulfide (MoS2) or diamond-like carbon (DLC)
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Effect of cone angle of cylindrical pin in the SFSW and DFSW on mechanical properties of AA6061-T6 alloy Int. J. Mech. Mater. Eng. Pub Date : 2021-06-12 Mahdi Kazemi, Amir Ghiasvand
In the present study, the effect of cone angle of tool pin on the mechanical properties and microhardness properties of aluminum alloy AA6061-T6 specimens is investigated for three processes of SFSW, symmetric DFSW, and asymmetric DFSW. In each of the mentioned welding processes, tools with 5 different conical angles of 0, 5, 10, 15, and 20° are used. In these three welding processes, the mechanical
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Development of calcium fluoride thin film on Ti-6Al-4V material by a dip coating process with an intermediate shellac layer for biocompatible orthopedic applications Int. J. Mech. Mater. Eng. Pub Date : 2021-05-31 A. Ritwik, K. K. Saju
Calcium fluoride (CaF2) is widely used for different bio applications ranging from biomedical imaging to cell labeling. The biocompatible properties of CaF2 combined with superior mechanical properties of titanium alloy makes it a perfect choice for orthopedic and dental implants. A dip-coating process was employed to develop a thin film of CaF2 coating on Ti6Al4V material with an intermediate thin
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Study of biaxial mechanical properties of the passive pig heart: material characterisation and categorisation of regional differences Int. J. Mech. Mater. Eng. Pub Date : 2021-04-20 Fulufhelo Nemavhola
Regional mechanics of the heart is vital in the development of accurate computational models for the pursuit of relevant therapies. Challenges related to heart dysfunctioning are the most important sources of mortality in the world. For example, myocardial infarction (MI) is the foremost killer in sub-Saharan African countries. Mechanical characterisation plays an important role in achieving accurate
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Experimental investigations and empirical relationship on the influence of innovative hub geometry in a centrifugal fan for performance augmentation Int. J. Mech. Mater. Eng. Pub Date : 2021-03-19 N. Madhwesh, K. Vasudeva Karanth, N. Yagnesh Sharma
One of the problem areas of fluid flow in the turbomachine is its inlet region, manifested by flow distortions due to the induced fluid swirl accompanied by improper flow incidence onto the impeller. Further, the hub forms one of the main components of many of the turbomachines and it is found that there has not been significant study on geometrical modifications of the same in centrifugal fans for
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Mathematical modeling of auxetic systems: bridging the gap between analytical models and observation Int. J. Mech. Mater. Eng. Pub Date : 2021-03-17 James N. Grima-Cornish, Joseph N. Grima, Daphne Attard
The Poisson’s ratio, a property which quantifies the changes in thickness when a material is stretched and compressed, can be determined as the negative of the transverse strain over the applied strain. In the scientific literature, there are various ways how strain may be defined and the actual definition used could result in a different Poisson’s ratio being computed. This paper will look in more
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Correction to: Memory-dependent derivative approach onmagneto-thermoelastic transversely isotropic medium with two temperatures Int. J. Mech. Mater. Eng. Pub Date : 2021-02-07 Iqbal Kaur, Parveen Lata, Kulvinder Singh
An amendment to this paper has been published and can be accessed via the original article.
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Experimental investigation on a novel approach for laser surface hardening modelling Int. J. Mech. Mater. Eng. Pub Date : 2021-01-13 L. Orazi, A. Rota, B. Reggiani
Laser surface hardening is rapidly growing in industrial applications due to its high flexibility, accuracy, cleanness and energy efficiency. However, the experimental process optimization can be a tricky task due to the number of involved parameters, thus suggesting for alternative approaches such as reliable numerical simulations. Conventional laser hardening models compute the achieved hardness
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Ductile failure analysis of epoxy resin plates containing multiple circular arc cracks by means of the equivalent material concept Int. J. Mech. Mater. Eng. Pub Date : 2021-01-02 M. Pourseifi, A. S. Rahimi
Ductile failure of polymeric samples weakened by circular arc cracks is studied theoretically and experimentally in this research. Various arrangements of cracks with different arc angles are considered in the specimens such that crack tips experienced the mixed mode I/II loading conditions. Fracture tests are conducted on the multi-cracked specimens and their fracture loads are achieved. To provide
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Memory-dependent derivative approach on magneto-thermoelastic transversely isotropic medium with two temperatures Int. J. Mech. Mater. Eng. Pub Date : 2020-12-03 Iqbal Kaur, Parveen Lata, Kulvinder Singh
The aim of the present investigation is to examine the memory-dependent derivatives (MDD) in 2D transversely isotropic homogeneous magneto thermoelastic medium with two temperatures. The problem is solved using Laplace transforms and Fourier transform technique. In order to estimate the nature of the displacements, stresses and temperature distributions in the physical domain, an efficient approximate
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Interfacial assessment of degraded amorphous silicon module using scanning probe microscopy Int. J. Mech. Mater. Eng. Pub Date : 2020-12-03 E. L. Meyer, G. O. Osayemwenre
This is a study of the degradation of amorphous silicon solar cells. The study accessed structural defects and the mechanical stress of solar cells at nanoscale level. Interface morphology, deformation, and internal delamination of the cells were analyzed. Adequate analysis of roughness parameters was performed to investigate the state of degradation of the amorphous silicon solar modules (a-Si:H)
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Retraction Note: Hydrothermal analysis on MHD squeezing nanofluid flow in parallel plates by analytical method Int. J. Mech. Mater. Eng. Pub Date : 2020-08-28 Kh. Hosseinzadeh, M. Alizadeh, D. D. Ganji
An amendment to this paper has been published and can be accessed via the original article.
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Investigation of mechanical properties and surface roughness of friction stir welded AA6061-T651 Int. J. Mech. Mater. Eng. Pub Date : 2020-06-06 Rajesh Kumar Bhushan, Deepak Sharma
Friction stir welding (FSW) of 6-mm-thick plates of AA6061-T651 was carried out using a simple cylindrical pin tool. The impact of welding factors (rotational speed, welding speed) on tensile properties, microhardness, and surface roughness of FSW joints was investigated. Ultimate tensile strength (UTS), yield strength, and % elongation of AA6061-T651 base plate as well as FSW joints were found out
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Effects of tool offset, pin offset, and alloys position on maximum temperature in dissimilar FSW of AA6061 and AA5086 Int. J. Mech. Mater. Eng. Pub Date : 2020-05-15 Amir Ghiasvand, Mahdi Kazemi, Maziar Mahdipour Jalilian, Hossein Ahmadi Rashid
Friction stir welding (FSW) is a solid-state welding technique, which two workpieces join by pressure and large plastic deformation near their melting points. The tool offset, pin offset, and position of dissimilar alloys can highly affect the maximum temperature and heat distribution in FSW process. In current research, the effects of three mentioned variables on the maximum temperature of FSW of
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The effect of alumina powder in dielectric on electrical discharge machining parameters of aluminum composite A413-Al2O3 by the Taguchi method, the signal-to-noise analysis and the total normalized quality loss Int. J. Mech. Mater. Eng. Pub Date : 2020-04-03 Mojtaba Shahbazi Dastjerdi, Ali Mokhtarian, Payam Saraeian
The machining capability of metal composites is different compared to other materials because of their specific physical and mechanical properties. The aluminum composite A413 reinforced with Alumina powder is one of the materials which causes rapid erosion of the tool if traditional machining methods are employed. In this research, the electrical discharge machining experiments were conducted using
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Experimentation and numerical modeling on the response of woven glass/epoxy composite plate under blast impact loading Int. J. Mech. Mater. Eng. Pub Date : 2020-02-10 Kasmidi Gunaryo, Heri Heriana, M. Rafiqi Sitompul, Andi Kuswoyo, Bambang K. Hadi
Composite material is being used in vehicles for protective structures against blast loading. Limited data is available which compare experimental works and numerical analysis in the open field environment. More data is needed in this area in order to be able to predict and use composite materials safely. In this work, the response of woven glass/epoxy composite plates under blast loading was investigated
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Axisymmetric deformation in transversely isotropic magneto-thermoelastic solid with Green–Naghdi III due to inclined load Int. J. Mech. Mater. Eng. Pub Date : 2020-01-31 Iqbal Kaur, Parveen Lata
The axisymmetric problem in two-dimensional transversely isotropic magneto-thermoelastic (TIMT) solid due to inclined load with Green–Naghdi (GN)-III theory and two temperature (2T) has been studied. The Laplace and Hankel transform has been used to get the expressions of temperature distribution, displacement, and stress components with the horizontal distance in the physical domain. The effect of
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Effect of concentration, aging, and annealing on sol gel ZnO and Al-doped ZnO thin films Int. J. Mech. Mater. Eng. Pub Date : 2020-01-29 D. T. Speaks
Presented are experimental results on the effect of concentration, aging, and annealing time on the optical and structural properties of sol gel zinc oxide (ZnO) and Al-doped ZnO thin films. ZnO and ZnO:Al thin films were fabricated on glass substrates using spin coating followed by annealing. XRD confirmed that the films are polycrystalline wurtzite. For low concentration films (0.2 and 0.4 M), grain
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A novel to perform a thermoelastic analysis using digital image correlation and the boundary element method Int. J. Mech. Mater. Eng. Pub Date : 2020-01-22 Matheus B. A. M. Oberg, Daniel F. de Oliveira, Jhon N. V. Goulart, Carla T. M. Anflor
This work aims for a novel thermoelastic analysis methodology based on experimental steady-state temperature data and numerical displacement evaluation. The temperature data was acquired using thermal imaging and used as the input for a boundary element method (BEM) routine to evaluate its consequent thermoelastic displacement. The thermoelastic contribution to the resultant displacement arises in
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An analytical investigation of elastic-plastic deformation of FGM hollow rotors under a high centrifugal effect Int. J. Mech. Mater. Eng. Pub Date : 2019-12-16 Shams Torabnia, Sepideh Aghajani, Mohammadreza Hemati
Functionally graded material shafts are the main part of many modern rotary machines such as turbines and electric motors. The purpose of this study is to present an analytical solution of the elastic-plastic deformation of functionally graded material hollow rotor under a high centrifugal effect and finally determine the maximum allowed angular velocity of a hollow functionally graded material rotating
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Nonlinear pre and post-buckled analysis of curved beams using differential quadrature element method Int. J. Mech. Mater. Eng. Pub Date : 2019-12-12 M. Zare, A. Asnafi
This paper studied the in-plane elastic stability including pre and post-buckling analysis of curved beams considering the effects of shear deformations, rotary inertia, and the geometric nonlinearity due to large deformations. Firstly, the governing nonlinear equations of motion were derived. The problem was solved performing both the static and dynamic analysis using the numerical method of differential
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Investigation of a new methodology for the prediction of drawing force in deep drawing process with respect to dimensionless analysis Int. J. Mech. Mater. Eng. Pub Date : 2019-11-28 Saeed Hajiahmadi, Majid Elyasi, Mohsen Shakeri
In this research, geometric parameters were given in dimensionless form by the Buckingham pi dimensional analysis method, and a series of dimensionless groups were found for deep drawing of the round cup. To find the best group of dimensionless geometric parameters, three scales are evaluated by commercial FE software. After analyzing all effective geometric parameters, a fittest relational model of
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A review of challenges and solutions in the preparation and use of magnetorheological fluids Int. J. Mech. Mater. Eng. Pub Date : 2019-11-28 James Sathya Kumar, P. Sam Paul, Girish Raghunathan, Divin George Alex
This review of MRF (magnetorheological fluids or MR fluids) brings out the challenges in methods of preparation, difficulties encountered in storage and use, and possible solutions to overcome the challenges. Magnetorheological fluid in the rheological fluid domain has found use due to its ability to change its shear strength based on the applied magnetic field. Magnetorheological fluids are composed
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Rayleigh wave propagation in transversely isotropic magneto-thermoelastic medium with three-phase-lag heat transfer and diffusion Int. J. Mech. Mater. Eng. Pub Date : 2019-10-16 Iqbal Kaur, Parveen Lata
The present research deals with the propagation of Rayleigh wave in transversely isotropic magneto-thermoelastic homogeneous medium in the presence of mass diffusion and three-phase-lag heat transfer. The wave characteristics such as phase velocity, attenuation coefficients, specific loss, and penetration depths are computed numerically and depicted graphically. The normal stress, tangential stress
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Characterization the effects of nanofluids and heating on flow in a baffled vertical channel Int. J. Mech. Mater. Eng. Pub Date : 2019-09-18 Ali Assim Al-Obaidi, Ali J. Salman, Ali Raheem Yousif, Dalya H. Al-Mamoori, Mohamed H. Mussa, Tayser Sumer Gaaz, Abdul Amir H. Kadhum, Mohd S. Takriff, Ahmed A. Al-Amiery
The laminar 2-D blended convection of the nanofluids at different volume fractions has gained interest in the last decade due to an enormous application in technology. The laminar-flow stream system can be further modified by changing the geometry of the channel, adding an external heating source, and changing the initial conditions at which the stream is being influenced. The investigation of this
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Transversely isotropic thermoelastic thin circular plate with constant and periodically varying load and heat source Int. J. Mech. Mater. Eng. Pub Date : 2019-08-23 Iqbal Kaur, Parveen Lata
The present research deals with the deformation in transversely isotropic thermoelastic (TIT) thin circular plate. Rotation effect is studied under thermally insulated as well as isothermal boundaries. The Laplace and Hankel transform techniques have been used to find the solution to the problem. The displacement components, conductive temperature distribution, and stress components with the radial
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The research design of graphene inclusion on LDPE characterization Int. J. Mech. Mater. Eng. Pub Date : 2019-08-14 Maziyar Sabet, Hassan Soleimani
A progressive trend in instructional materials is the analytical plan and manufacture of fundamental operating equipment. LDPE/Gr nanocompounds were researched using various techniques such as Raman spectra (RS), XRD, SEM, and TEM based on Gr distribution, morphology, and crystal structure. The results presented by SEM showed that the addition of Grs was distributed homogeneously in the LDPE matrix
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Enhancement of metallic machine parts mechanical properties by the use of vibratory processing for oxide coated films formation and MoS2 solid lubricant coating deposit Int. J. Mech. Mater. Eng. Pub Date : 2019-07-15 Dieudonné Essola, Jean Chills Amba, Claude Valery Ngayihi Abbe, Joseph Nkongho Anyi, Vladimir Vitalevich Ivanov
Experimental studies have been carried out to establish the possibility of using vibratory machining technology through shock-wave transmission for oxide coating preparation on aluminum-alloyed machine components and also to discuss the technological possibilities of applying vibration mechanochemical solid lubricant coatings based on MoS2 to improve the surface quality and performance properties of
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Comparison of varieties of numerical methods applied to lid-driven cavity flow: coupling algorithms, staggered grid vs. collocated grid, and FUDS vs. SUDS Int. J. Mech. Mater. Eng. Pub Date : 2019-07-11 A. A. Boroujerdi, M. Hamzeh
The effectiveness of different methods, schemes, algorithms, and approaches is of substantial challenging problems in numerical modeling of transport phenomena. In the present paper, a lid-driven cavity problem is modeled via two basically different approaches of spatial discretization: collocated and staggered. The non-dimensionalized governing equations are semi-discretized by using a finite volume
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Cross bore geometry configuration effects on stress concentration in high-pressure vessels: a review Int. J. Mech. Mater. Eng. Pub Date : 2019-05-28 P. K. Nziu, L. M. Masu
The aim of this study was to establish the effect of cross bore configuration geometry on stress concentration in cross-bored high-pressure vessels. The cross bore geometry parameters with adverse effects on stress concentration include cross bore size, shape, location, obliquity, and thickness ratio. However, there were no conducted studies on the optimal combination on these geometric configuration
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Preparation of a high surface area zirconium oxide for fuel cell application Int. J. Mech. Mater. Eng. Pub Date : 2019-05-22 Rudzani Sigwadi, Mokhotjwa Dhlamini, Touhami Mokrani, Fulufhelo Nemavhola
Stable and high surface area zirconium oxide nanoparticles have been synthesised by means of the hydrothermal method. The Brunauer–Emmett–Teller results show that a high surface area of 543 m2/g was obtained in the hydrothermal process, having a high porosity in nanometre range. The hydrothermal method was applied at 120 °C by using an autoclave with a Teflon liner at an ambient pressure for 48 h.
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Cross bore size and wall thickness effects on elastic pressurised thick cylinders Int. J. Mech. Mater. Eng. Pub Date : 2019-04-25 P. K. Nziu, L. M. Masu
Three-dimensional finite element analyses were performed on closed-ended thick-walled cylinders with a radial cross bore under internal pressure. The aim of this study was to determine the behaviour of the hoop stress as well as to establish the optimal Stress Concentration Factors (SCF). Cylinders of thickness ratios of 3.0 down to 1.4 with cross bore size ratios (cross bore to main bore ratio) ranging
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Application of response surface methodology for prediction and modeling of surface roughness in ball end milling of OFHC copper Int. J. Mech. Mater. Eng. Pub Date : 2019-04-11 Asiful H. Seikh, Biplab Baran Mandal, Amit Sarkar, Muneer Baig, Nabeel Alharthi, Bandar Alzahrani
This study was conducted to investigate the synergistic effects of cutting parameters on surface roughness in ball end milling of oxygen-free high conductivity (OFHC) copper and to determine a statistical model that can suitably correlate the experimental results. Firstly, an experimental plan based on a full factorial rotatable central composite design with variable parameters, the cutting feed rate
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Structural morphology and electronic conductivity of blended Nafion®-polyacrylonitrile/zirconium phosphate nanofibres Int. J. Mech. Mater. Eng. Pub Date : 2019-01-23 R. Sigwadi, M. S. Dhlamini, T. Mokrani, F. Nemavhola
This paper aimed to study the influence of zirconium phosphate (ZrP) nanoparticles on reducing the diameter of nanofibres during electrospinning. Addition of metal oxide such as zirconium phosphate decreases the diameter and smooths on the polyacrylonitrile (PAN) nanofibres as observed by the SEM techniques. Furthermore, this work investigated the effect of zirconium phosphate on the morphology and
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Effect of cutting parameters on the dimensional accuracy and surface finish in the hard turning of MDN250 steel with cubic boron nitride tool, for developing a knowledged base expert system Int. J. Mech. Mater. Eng. Pub Date : 2019-01-07 Sasan Yousefi, Mehdi Zohoor
In the machining operations, final surface finish and dimensional accuracy are the most specified customer requirements. Hard turning machining operation using cubic boron nitride tool as an alternative of grinding process is a type of turning operation in which hardened steel are machined with the hardness greater than 45 HRc. During the hard turning operation because of the hard condition, the variations
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GA-based multi-objective optimization of active nonlinear quarter car suspension system—PID and fuzzy logic control Int. J. Mech. Mater. Eng. Pub Date : 2018-11-22 Mahesh P. Nagarkar, Yogesh J. Bhalerao, Gahininath J. Vikhe Patil, Rahul N. Zaware Patil
The primary function of a suspension system is to isolate the vehicle body from road irregularities thus providing the ride comfort and to support the vehicle and provide stability. The suspension system has to perform conflicting requirements; hence, a passive suspension system is replaced by the active suspension system which can supply force to the system. Active suspension supplies energy to respond
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Sintering driving force of Al2O3 powders at the initial stage of pulse electric current sintering under thermoelastic diffusion Int. J. Mech. Mater. Eng. Pub Date : 2018-08-29 Zhang Long, Zheng Heng-wei
The theoretical investigation of the rapid sintering mechanism under pulse electric current sintering has no unified understanding. Especially for non-conductive powder, since there is no current flowing directly through the powder materials, the driving force in the neck growth mechanism becomes a key problem and needs to make progress. The sintering driving force of nonconductive Al2O3 powders at
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Stress-strain state of an elastic half-space with a cavity of arbitrary shape Int. J. Mech. Mater. Eng. Pub Date : 2018-07-25 E. A. Kalentev
Analytical method for studying stress concentration around arbitrary shape cavity is proposed. The method is based on the assumption that it is possible to simulate the influence of cavity on the redistribution of internal forces by including fictitious forces in the solution. To determine the stress-strain state, additional forces acting on cavity surface are used. The magnitude of these forces is
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A new method to study free transverse vibration of the human lumbar spine as segmental multi-layer Timoshenko and Euler–Bernoulli beams Int. J. Mech. Mater. Eng. Pub Date : 2018-07-13 H. Asgharzadeh Shirazi, M. Fakher, A. Asnafi, S. Hosseini Hashemi
The aim of this study is to propose a method for studying the free transverse vibration of the human lumbar spine using Timoshenko and Euler–Bernoulli beam theories. The cross section of the lumber spine is assumed to be uniform, and the material properties are different for the vertebral bodies, endplates, and intervertebral discs. To derive equations with biomedical approach, they were developed
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Taguchi-fuzzy multi-response optimization in fly cutting process and applying in the actual hobbing process Int. J. Mech. Mater. Eng. Pub Date : 2018-04-11 Minh Tuan Ngo, Vi Hoang, Sinh Vinh Hoang
Applying nanofluid made by adding alumina nanoparticles to industrial oil may reduce the cutting force, friction, and cutting temperature and, from that, improve the tool life in the hobbing process. However, it is difficult to set up the experiment for the actual gear hobbing process, because measuring the cutting force and temperature in the hobbing process is very complicated and expensive. Therefore
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Establishing a simple and reliable method of measuring ductility of fine metal wire Int. J. Mech. Mater. Eng. Pub Date : 2018-03-02 Shiori Gondo, Shinsuke Suzuki, Motoo Asakawa, Kosuke Takemoto, Kenichi Tashima, Satoshi Kajino
Measurement of the ductility like elongation and reduction of area of the fine metal wire is important because of the progress for the weight reduction and miniaturization of various products. This study established a simple and reliable method of measuring the ductility of a fine metal wire. Tensile and loading-unloading tests were performed with applying initial load to high-carbon steel wire (diameters
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RETRACTED ARTICLE: Hydrothermal analysis on MHD squeezing nanofluid flow in parallel plates by analytical method Int. J. Mech. Mater. Eng. Pub Date : 2018-02-26 Kh. Hosseinzadeh, M. Alizadeh, D. D. Ganji
In this paper, the heat and mass transfer of MHD nanofluid squeezing flow between two parallel plates are investigated. In squeezing flows, a material is compressed between two parallel plates and then squeezed out radially. The significance of this study is the hydrothermal investigation of MHD nanofluid during squeezing flow. The affecting parameters on the flow and heat transfer are Brownian motion
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Study of the sensitivity of high-strength cold-resistant shipbuilding steels to thermal cycle of arc welding Int. J. Mech. Mater. Eng. Pub Date : 2018-02-05 Pavel Layus, Paul Kah, Elena Khlusova, Victor Orlov
Structure and properties of welded joints of low-alloy thermomechanically processed (09G2FB) and quenched and tempered shipbuilding steels (10XN2MD, 08XN3MD, and 12XN3MF), welded with manual metal arc welding (MMA) and submerged arc welding (SAW), were studied. Effects of specific energy input on the microstructure, mechanical properties, and impact energy of the heat-affected zone (HAZ) have been
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Flow and heat transfer of dusty hyperbolic tangent fluid over a stretching sheet in the presence of thermal radiation and magnetic field Int. J. Mech. Mater. Eng. Pub Date : 2018-01-22 K. Ganesh Kumar, B. J. Gireesha, R. S. R. Gorla
This paper explores the impact of thermal radiation on boundary layer flow of dusty hyperbolic tangent fluid over a stretching sheet in the presence of magnetic field. The flow is generated by the action of two equal and opposite. A uniform magnetic field is imposed along the y-axis and the sheet being stretched with the velocity along the x-axis. The number density is assumed to be constant and volume
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Simulated and experimental investigation of the airfoil contour forming of 301 austenitic stainless steel considering the springback Int. J. Mech. Mater. Eng. Pub Date : 2018-01-05 Reza Bagheinia, Aazam Ghassemi
Metal forming has played a significant role in manufacturing development, thus investigations in the field of metal forming to improve the quality of the forming process are necessary. In the present study, the experimental and numerical analysis of airfoil contour forming of 301 austenitic stainless steel is examined in order to reduce the spring reversible ability under preheat temperature. Considering
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Structural Analysis of Biologically Inspired Small Wind Turbine Blades Int. J. Mech. Mater. Eng. Pub Date : 2017-08-22 Cory Seidel, Sanjay Jayaram, Leah Kunkel, Alexander Mackowski
Renewable energy resources are becoming more important to meet growing energy demands while reducing pollutants in the environment. In the current market, wind turbines are primarily restricted to rural use due to the large size, noise creation, and physical appearance. However, wind turbines possess the ability to run at any time of the day. Horizontal axis wind turbines remain the most widely used
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Effect of nonlinear thermal radiation on double-diffusive mixed convection boundary layer flow of viscoelastic nanofluid over a stretching sheet Int. J. Mech. Mater. Eng. Pub Date : 2017-08-18 K. Ganesh Kumar, B. J. Gireesha, S. Manjunatha, N. G. Rudraswamy
The present exploration deliberates the effect of nonlinear thermal radiation on double diffusive free convective boundary layer flow of a viscoelastic nanofluid over a stretching sheet. Fluid is assumed to be electrically conducting in the presence of applied magnetic field. In this model, the Brownian motion and thermophoresis are classified as the main mechanisms which are responsible for the enhancement
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A quasi-analytical solution of homogeneous extended surfaces heat diffusion equation Int. J. Mech. Mater. Eng. Pub Date : 2017-08-16 Ernest Léontin Lemoubou, Hervé Thierry Tagne Kamdem
In this study, a quasi-analytical solution for longitudinal fin and pin heat conduction problems is investigated. The differential transform method, which is based on the Taylor series expansion, is adapted for the development of the solution. The proposed differential transform solution uses a set of mathematical operations to transform the heat conduction equation together with the fin profile in
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Effect of torch process on the steels used for bucket, shovel handle, and other high-tonne mining equipment Int. J. Mech. Mater. Eng. Pub Date : 2017-08-14 H. Ochoa Medina, J. Leiva Yapur, O. Fornaro, Z. Cárdenas Quezada
The gouging torch process using air carbon arc cutting (CAC) device is a standard maintenance procedure carrying out in high-tonne equipment used in the minery industry. The application of this process could locally affect the mechanical properties and the microstructure in the thermally affect zone (HAZ). The changes involve variation in the local carbon concentration and a tempering effect. In commonly
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Dynamic assessment of direct-current mobility in field-assisted sintered oxide dispersion-strengthened V-4Cr-4Ti alloys Int. J. Mech. Mater. Eng. Pub Date : 2017-07-24 Vinoadh Kumar Krishnan, Kumaran Sinnaeruvadi
Vanadium alloy is one of the potential candidate material for structural applications in a commercial fusion reactor. Extended survival of a structural material has a direct consequence on the net energy produced in a fusion reaction, it is important to develop ultra-functional materials with tailored microstructures, to meet the harsh fusion environments. Microstructure of material, indeed depend
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Non-contact experimental methods to characterise the response of a hyper-elastic membrane Int. J. Mech. Mater. Eng. Pub Date : 2017-07-24 M. Kamper, A. Bekker
Membranes often feature in dynamic structures. The design of such structures generally includes the evaluation of their dynamic characteristics, such as natural frequecies and mode shapes. The quasi-statics ad dyamic responses of thin rubber sheeting were investigated through non-contact experimental techniques. The rubber sheeting was modelled as a membrane structure and the material was assumed to
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Elastic waves in fractured rocks under periodic compression Int. J. Mech. Mater. Eng. Pub Date : 2017-06-05 Elena L. Kossovich, Alexey V. Talonov, Viktoria L. Savatorova
One of the current problems in studying the mechanical properties and behavior of structurally inhomogeneous media with cracks is the characterization of acoustic wave propagation. This is especially important in Geomechanics and prognosis of earthquakes. In this work, the authors propose an approach that could simplify characterization of wave propagation in medium with cracks. It is based on homogenization