样式: 排序: IF: - GO 导出 标记为已读
-
Impact of nose radius and machining parameters on surface roughness, tool wear and tool life during turning of AA7075/SiC composites for green manufacturing Mech. Adv. Mater. Mod. Process. Pub Date : 2020-08-02 Rajesh Kumar Bhushan
Green manufacturing demands least wastage. Minimum chip formation reduces adverse effect on environment. Nose radius has a major role in reducing development of chips. Selection of proper nose radius and machining parameters will reduce amount of chip, therefore protect the environment. In finish turning of Al alloy-SiC, nose radius wear mainly affect the surface feature of the final product. It is
-
Mathematical modeling of the electron-beam wire deposition additive manufacturing by the smoothed particle hydrodynamics method Mech. Adv. Mater. Mod. Process. Pub Date : 2019-12-13 Dmitriy Nikolayevich Trushnikov, Elena Georgieva Koleva, Roman Pozolovich Davlyatshin, Roman Mikhailovich Gerasimov, Yuriy Vitalievich Bayandin
The actual problem for calculating a shape of free surface of the melt when analyzing the processes of wire-based electron-beam surfacing on the substrate, being introduced into additive manufacturing, is the development of adequate mathematical models of heat and mass transfer. The paper proposed a formulation of the problem of melt motion in the framework of the Lagrangian description. The mathematical
-
Numerical 3D simulation of wire deposition process to predict distortion of parts Mech. Adv. Mater. Mod. Process. Pub Date : 2019-10-15 Oleg Yu Smetannikov, Petr V. Maksimov, Dmitriy N. Trushnikov, Gleb L. Permyakov, Vladimir Ya Belenkiy, Alexander S. Farberov
In the work, on the basis of the analysis of publications, existing approaches to the numerical modeling of additive processes of product formation are shown. The work itself is devoted to the study of the influence of parameters of the process of surfacing wire materials on the formation of residual deformations in parts. A mathematical formulation of the non-stationary thermomechanical problem is
-
Nickel nanoparticles inside carbon nanostructures: atomistic simulation Mech. Adv. Mater. Mod. Process. Pub Date : 2019-03-20 Liliya R. Safina, Julia A. Baimova, Radik R. Mulyukov
Ni nanoparticle on a graphene substrate, inside the fullerene and carbon nanotube was studied by molecular dynamics simulation technique. Morse interatomic potential have been used for Ni-Ni and Ni-C interactions, and AIREBO potential has been used for C-C interaction. The pairwise Morse potential was chosen for the description of the Ni–C interaction because of its simplicity. It is shown that Morse
-
Finite element simulation of the braiding process. Mech. Adv. Mater. Mod. Process. Pub Date : 2019-01-23 S Del Rosso,L Iannucci,P T Curtis
Braiding is one of the most common technique employed for the manufacture of fabrics and ropes. It is also commonly used to produce near-net shaped preforms for advanced fibre reinforced composites. This paper presents an explicit finite element approach to create and simulate the braiding process for the virtual manufacture of 2D braids. The process starts from the definition of an analytical function
-
A new hypothesis on the mechanism of nano-filled elastomers reinforcement Mech. Adv. Mater. Mod. Process. Pub Date : 2018-12-17 Alexander Konstantinovich Sokolov, Oleg Konstantinovich Garishin, Alexander L’vovich Svistkov
Incorporation of active fillers to rubber markedly improves the strength properties and deformation characteristics of such materials. One possible explanation of this phenomenon is suggested in this work. It is based on the fact that for large deformations the binder (high-elastic, cross-linked elastomer) in the gaps between the filler particles (carbon black) is in a state close to the uniaxial extension
-
Experimental and analytical investigation on resin impregnation behavior in continuous carbon fiber reinforced thermoplastic polyimide composites Mech. Adv. Mater. Mod. Process. Pub Date : 2018-10-24 Shota Kazano, Toshiko Osada, Satoshi Kobayashi, Ken Goto
In molding of carbon fiber reinforced thermoplastics (CFRTP), resin impregnation behavior to fiber yarns is very important because higher viscosity of molten thermoplastics inhibites resin impregnation to the interspace among fibers. Resultant resin un-impregnation causes lower mechanical properties of CFRTP. The purpose of this study was to clarify the relation among molding method, molding conditions
-
Estimating the creep behavior of glass-fiber-reinforced polyamide considering the effects of crystallinity and fiber volume fraction Mech. Adv. Mater. Mod. Process. Pub Date : 2018-09-29 Takenobu Sakai, Yuto Hirai, Satoshi Somiya
The time-temperature superposition principle (TTSP) is often used to estimate the viscoelastic behavior of polymers. It can also be used to evaluate the influence of a given variable, or set of variables, on viscoelastic properties. In this research, the effects of time, temperature, fiber volume fraction and the relative crystallinity of polyamide (PA) and glass fiber-reinforced polyamide (GFRPA)
-
Microstructure and mechanical properties of aluminium-graphene composite powders produced by mechanical milling Mech. Adv. Mater. Mod. Process. Pub Date : 2018-09-06 Jiangshan Zhang, Zhixin Chen, Jingwei Zhao, Zhengyi Jiang
Graphene has been reported to be a promising nanofiller in fabricating advanced metal matrix composites. Graphene nanosheets (GNSs) have been incorporated into an aluminium matrix composite using mechanical milling and hot pressing in the current study. The SEM observation shows that aluminium particles are firstly flattened into flakes, and then fractured/ rewelded into equiaxed particles as the ball
-
The effect of matrix cracking on mechanical properties in FRP laminates Mech. Adv. Mater. Mod. Process. Pub Date : 2018-08-04 M.J. Mohammad Fikry, Shinji Ogihara, Vladimir Vinogradov
Fiber Reinforced Polymer (FRP) laminates have properties, which are highly dependent on the ply fiber orientations and which can be designed for optimum laminate performance. The purpose of this study is to investigate the effect of matrix cracking on the mechanical properties of FRP laminates with various off-axis angles, and to provide a critical test for an analytical solution using variational
-
Measurement of third-order elastic constants and stress dependent coefficients for steels Mech. Adv. Mater. Mod. Process. Pub Date : 2018-02-09 Sennosuke Takahashi
There has been little discussion of the third-order elastic constants of steels in the literature until now. In this study, the precise second- and third-order elastic constants of polycrystalline steels were measured under adiabatic and isothermal conditions. To measure the minute change in the propagation time of the elastic wave corresponding to the tensile stress, the uniform and isotropic specimens
-
Effect of graphene on polar and nonpolar rubber matrices Mech. Adv. Mater. Mod. Process. Pub Date : 2018-02-05 Bismark Mensah, Seok In Kang, Wonseok Wang, Changwoon Nah
So far, the effect of graphene oxide (GO) and reduced graphene oxide (rGO) in rubber matrix has not been well established. The effects of graphene oxide (GO) and reduced graphene oxide (rGO) on the physical properties of polar acrylonitrile-butadiene rubber (NBR) and non-polar Ethylene-propylene-diene terpolymer rubber (EPDM) matrix have been investigated and their properties compared. NBR vulcanizates
-
Statistical methods for mechanical characterization of randomly reinforced media Mech. Adv. Mater. Mod. Process. Pub Date : 2017-11-21 Mikhail Tashkinov
Advanced materials with heterogeneous microstructure attract extensive interest of researchers and engineers due to combination of unique properties and ability to create materials that are most suitable for each specific application. One of the challenging tasks is development of models of mechanical behavior for such materials since precision of the obtained numerical results highly depends on level
-
Rheonomic phenomenon shrinkage of holes drilled in fibreglass and carbon fibre-reinforced polymer composites Mech. Adv. Mater. Mod. Process. Pub Date : 2017-11-13 Aleksandr Dudarev, Konstantin Volegov, Georgiy Kurzanov
The research is devoted to machining polymer composite materials and reflects a non-trivial, accuracy-affecting phenomenon that occurs while drilling polymer composite materials, i.e. reduction of holes diameter over time after processing. The article contains experimental data obtained in the research of rheonomic shrinkage of holes after drilling various grades of polymer composite materials. The
-
Reviewing the class of Al-rich Ti-Al alloys: modeling high temperature plastic anisotropy and asymmetry Mech. Adv. Mater. Mod. Process. Pub Date : 2017-10-02 Helal Chowdhury, Holm Altenbach, Manja Krüger, Konstantin Naumenko
In the last decades, the class of Ti-rich TiAl-based intermetallic materials has replaced many contemporary alloys till 900 °C. Due to higher oxidation resistance, 20% lower density and higher (about 150 °C more) operating temperature possibility of Al-rich TiAl alloys over Ti-rich side, phases from the Al-rich region of this alloy system are considered to be highly potential candidates for high temperature
-
Modelling of Damage Evolution in Braided Composites: Recent Developments Mech. Adv. Mater. Mod. Process. Pub Date : 2017-08-31 Chen Wang, Anish Roy, Vadim V. Silberschmidt, Zhong Chen
Composites reinforced with woven or braided textiles exhibit high structural stability and excellent damage tolerance thanks to yarn interlacing. With their high stiffness-to-weight and strength-to-weight ratios, braided composites are attractive for aerospace and automotive components as well as sports protective equipment. In these potential applications, components are typically subjected to multi-directional
-
Modelling low velocity impact induced damage in composite laminates Mech. Adv. Mater. Mod. Process. Pub Date : 2017-07-26 Yu Shi, Constantinos Soutis
The paper presents recent progress on modelling low velocity impact induced damage in fibre reinforced composite laminates. It is important to understand the mechanisms of barely visible impact damage (BVID) and how it affects structural performance. To reduce labour intensive testing, the development of finite element (FE) techniques for simulating impact damage becomes essential and recent effort
-
Experimental and computational studies of poly-L-lactic acid for cardiovascular applications: recent progress Mech. Adv. Mater. Mod. Process. Pub Date : 2017-07-25 Raasti Naseem, Liguo Zhao, Yang Liu, Vadim V. Silberschmidt
Stents are commonly used in medical procedures to alleviate the symptoms of coronary heart disease, a prevalent modern society disease. These structures are employed to maintain vessel patency and restore blood flow. Traditionally stents are made of metals such as stainless steel or cobalt chromium; however, these scaffolds have known disadvantages. An emergence of transient scaffolds is gaining popularity
-
Recent advancements in mechanical characterisation of 3D woven composites Mech. Adv. Mater. Mod. Process. Pub Date : 2017-07-10 Mohamed Nasr Saleh, Constantinos Soutis
Three dimensional (3D) woven composites have attracted the interest of academia and industry thanks to their damage tolerance characteristics and automated fabric manufacturing. Although much research has been conducted to investigate their out-of-plane “through thickness” properties, still their in-plane properties are not fully understood and rely on extensive experimentation. To date, the literature
-
Computational study for reliability improvement of a circuit board Mech. Adv. Mater. Mod. Process. Pub Date : 2017-06-05 B. Emek Abali
An electronic device consists of electronic components attached on a circuit board. Reliability of such a device is limited to fatigue properties of the components as well as of the board. Printed circuit board (PCB) consists of conducting traces and vertical interconnect access (via) out of copper embedded in a composite material. Usually the composite material is fiber reinforced laminate out of
-
Full-field infrared phase sensitive thermography for microstructural investigation of giant magnetostrictive materials Mech. Adv. Mater. Mod. Process. Pub Date : 2017-05-25 Peng Yang, Chiu T. Law, Rani F. Elhajjar
Giant magnetostrictive materials are increasingly proposed for smart material applications such as in sensors, actuators, and energy harvesting applications. However, reviewing the literature on this topic, the reader observes a large amount of variability in the reported properties that are typically generated from overall strain or point-value strain measurements obtained with strain gages using
-
Experimental investigation of surface roughness, flank wear, chip morphology and cost estimation during machining of hardened AISI 4340 steel with coated carbide insert Mech. Adv. Mater. Mod. Process. Pub Date : 2017-05-04 Sudhansu Ranjan Das, Asutosh Panda, Debabrata Dhupal
Now-a-days, newer hardened steel materials are coming rapidly into the market due to its wide applications in various fields of engineering. So the machinability investigation of these steel materials is one of the prime concern for practicing engineers, prior to actual machining. The present study addresses surface roughness, flank wear and chip morphology during dry hard turning of AISI 4340 steel
-
Wave propagation in a transversely isotropic microstretch elastic solid Mech. Adv. Mater. Mod. Process. Pub Date : 2017-04-26 Baljeet Singh, Manisha Goyal
The theory of microstretch elastic bodies was first developed by Eringen (1971, 1990, 1999, 2004). This theory was developed by extending the theory of micropolar elastcity. Each material point in this theory has three deformable directors. The governing equations of a transversely isotropic microstretch material are specialized in x-z plane. Plane wave solutions of these governing equations results
-
Parametric optimization of powder mixed electrical discharge machining for nickel-based superalloy inconel-800 using response surface methodology Mech. Adv. Mater. Mod. Process. Pub Date : 2017-04-17 Satish Kumar, Ashwani Kumar Dhingra, Sanjeev Kumar
Electrical Discharge Machining (EDM) is a well-established non-conventional machining process for the machining of electrically conductive and difficult-to-machine materials. But its applications are limited because of the slow machining rate and poor surface finish. Powder mixed EDM (PMEDM) is unitary of the recent progresses in the EDM process in which powder particles mixed in the dielectric fluid
-
Modeling the copper microstructure and elastic anisotropy and studying its impact on reliability in nanoscale interconnects Mech. Adv. Mater. Mod. Process. Pub Date : 2017-03-28 Adarsh Basavalingappa, Ming Y. Shen, James R. Lloyd
Copper is the primary metal used in integrated circuit manufacturing of today. Even though copper is face centered cubic it has significant mechanical anisotropy depending on the crystallographic orientations. Copper metal lines in integrated circuits are polycrystalline and typically have lognormal grain size distribution. The polycrystalline microstructure is known to impact the reliability and must
-
Optimal selection of operating parameters in end milling of Al-6061 work materials using multi-objective approach Mech. Adv. Mater. Mod. Process. Pub Date : 2017-02-27 Jakeer Hussain Shaik, Srinivas J
Machining using vertical CNC end mill is popular in the modern material removal industries because of its ability to remove the material at a fast rate with a reasonably good surface quality. In this work, the influence of important common machining process variables like feed, cutting speed and axial depth of cut on the output parameters such as surface roughness and amplitude of tool vibration levels
-
Linear and non-linear vibration analysis of moderately thick isosceles triangular FGPs using a triangular finite p-element Mech. Adv. Mater. Mod. Process. Pub Date : 2017-02-01 SA. Belalia
The geometrically non-linear formulation based on Von-Karman’s hypothesis is used to study the free vibration isosceles triangular plates by using four types of mixtures of functionally graded materials (FGMs - AL/AL2O3, SUS304/Si3N4, Ti- AL-4V/Aluminum oxide, AL/ZrO2). Material properties are assumed to be temperature dependent and graded in the thickness direction according to power law distribution
-
Optimization of machining parameters and wire vibration in wire electrical discharge machining process Mech. Adv. Mater. Mod. Process. Pub Date : 2017-01-28 Sameh Habib
Wire Electrical discharge machining (WEDM) has higher capability for cutting complex shapes with high precision for very hard materials without using high cost of cutting tools. During the WEDM process, the wire behaves like a metal string, straightened by two axial pulling forces and deformed laterally by a sum of forces from the discharge process. Major forces acting on the wire can be classified
-
In-situ tool wear monitoring and its effects on the performance of porcine cortical bone drilling: a comparative in-vitro investigation Mech. Adv. Mater. Mod. Process. Pub Date : 2017-01-25 Vishal Gupta, Pulak M. Pandey
Drilling is one of the most widely used process in orthopaedic surgical operation and the same drill bit is used a number of times in hospitals. Using the same drill bit a several times may be the cause of osteosynthesis and osteonecrosis. In the present work, the effect of repeated orthopaedic surgical twist drill bit on the tool wear, force, torque, temperature and chip morphology during porcine
-
Flow-induced anisotropic viscosity in short FRPs Mech. Adv. Mater. Mod. Process. Pub Date : 2017-01-17 Róbert Bertóti, Thomas Böhlke
The commonly used flow models for Fiber Reinforced Polymers (FRPs) often neglect the flow-induced anisotropy of the suspension, but with increasing fiber volume fraction, this plays an important role. There exist already some models which count on this effect. They are, however, phenomenological and need a fitted model parameter. In this paper, a micromechanically-based constitutive law is proposed
-
Modelling of thermomechanical behaviour of fibrous polymeric composite materials subject to relaxation transition in the matrix Mech. Adv. Mater. Mod. Process. Pub Date : 2016-11-25 Valeriy Pavlovich Matveenko, Nikolay Alexandrovich Trufanov, Oleg Yurievich Smetannikov, Igor Nikolaevich Shardakov, Igor Nikolaevich Vasserman
Fiber–reinforced polymer composite materials are widely used in different branches of industry due to their distinctive features such as high specific strength and stiffness and due to as considerable opportunity to formulate materials with controllable variation of properties in response to the action of external factors (smart-materials). A distinguishing feature of products made of composite materials
-
Testing, characterization and modelling of mechanical behaviour of poly (lactic-acid) and poly (butylene succinate) blends Mech. Adv. Mater. Mod. Process. Pub Date : 2016-11-16 T. Y. Qiu, M. Song, L. G. Zhao
Significant amount of research, both experimental and numerical, has been conducted to study the mechanical behaviour of biodegradable polymer PL(L)A due to its wide range of applications. However, mechanical brittleness or poor elongation of PL(L)A has limited its applications considerably, particularly in the biomedical field. This study aims to study the potential in improving the ductility of PLA
-
Modelling plastic deformation in a single-crystal nickel-based superalloy using discrete dislocation dynamics Mech. Adv. Mater. Mod. Process. Pub Date : 2016-11-15 B. Lin, M. S. Huang, F. Farukh, A. Roy, V. V. Silberschmidt, L. G. Zhao
Nickel-based superalloys are usually exposed to high static or cyclic loads in non-ambient environment, so a reliable prediction of their mechanical properties, especially plastic deformation, at elevated temperature is essential for improved damage-tolerance assessment of components. In this paper, plastic deformation in a single-crystal nickel-based superalloy CMSX4 at elevated temperature was modelled
-
Processing of Al2O3–SiCw–TiC ceramic composite by powder mixed electric discharge grinding Mech. Adv. Mater. Mod. Process. Pub Date : 2016-11-14 M. K. Satyarthi, Pulak M. Pandey
The machining of conductive alumina ceramic was successful by the electric discharge grinding (EDG). Therefore, the aim of the present work is to increase the material removal rate (MRR) during EDG of conductive alumina ceramic by addition of ceramic powder with dielectric. To achieve the objective through experimental investigation is carried out and the influence of input process parameters (powder
-
Taguchi-Grey relation analysis for assessing the optimal set of control factors of thermal barrier coatings for high-temperature applications Mech. Adv. Mater. Mod. Process. Pub Date : 2016-10-12 Mohammed Yunus, Mohammad S. Alsoufi, Shadi M. Munshi
In an aerospace industry, the efficient use of thermally sprayed coatings for high-temperature applications is achieved by improving the thermal characteristics (TC) such as thermal drop/barrier (TD) and thermal fatigue cycles (TFC). The characterization of ceramic coatings demands a better understanding of TC and their performance. In this paper, an attempt has been made to use hybrid Taguchi design
-
Analysis on the effect of ZnO on Carbon nanotube by spray pyrolysis method Mech. Adv. Mater. Mod. Process. Pub Date : 2016-06-02 A. Ayeshamariam, D. Saravanakkumar, M. Kashif, S. Sivaranjani, B. Ravikumar
ZnO/CNT nanocomposites were prepared using Zinc acetate source materials and with the assistance of copper plate, glycine and sugar solution. The combined behavior between these two materials may give rise to the production of advanced materials with a wide range of applications in electronics and optoelectronics. The ZnO-CNT nanostructures are successfully prepared by simple perfume spray pyrolysis
-
Investigation of mechanical properties of Armco-iron during fatigue test Mech. Adv. Mater. Mod. Process. Pub Date : 2016-03-25 А. Vshivkov, А. Prokhorov, S. Uvarov, O. Plekhov
In this paper the mechanical properties of armco-iron are studied experimentally. The ultrasonic testing machine USF-2000 was used to carry out fatigue tests involving 106–1010 loading cycles. The frequency of loading is 19.5 ± 0.5 kHz. Based on the experimental data, the Wöhler curve was obtained. For the analysis of physical condition, two new sensors were designed, one of which measured the electric
-
Post-buckled equilibrium state of axially compressed polymeric rod in glass and rubbery transitions Mech. Adv. Mater. Mod. Process. Pub Date : 2016-01-22 Ksenia Alekseevna Tikhomirova, Nikolay Aleksandrovich Trufanov
Glass and rubbery transitions under cooling and heating of polymeric materials underlie a shape memory effect, that is a material ability to save temporarily the deformed shape and restore the original one under the external influence. The present work aims to model the shape memory effect for an axially compressed polymeric rod in its post-buckled equilibrium state, which is the generalization of