Başlık için Makine Mühendisliği Bölümü listeleme
Toplam kayıt 57, listelenen: 25-44
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Improvement the wear behavior of low carbon steels by friction stir processing
(IOP Publishing LTD, 2017)A low carbon structural steel was surface-hardened by friction stir processing (FSP) through 4 mm thickness from the surface. The hardness of the alloy increased from 140 Hv0.1 to about 240 Hv0.1 after single-pass FSP. ... -
In pursuit of barrierless transition metal dichalcogenides lateral heterojunctions
(IOP Publishing LTD, 2018)There is an increasing need to understand interfaces between two-dimensional materials to realize an energy efficient boundary with low contact resistance and small heat dissipation. In this respect, we investigated the ... -
The influence of surface functionalization on thermal transport and thermoelectric properties of MXene monolayers
(Royal Soc Chemistry, 2018)The newest members of a two-dimensional material family, involving transition metal carbides and nitrides (called MXenes), have garnered increasing attention due to their tunable electronic and thermal properties depending ... -
Influence of tantalum additions on the microstructure and shape memory response of Ti50.5Ni24.5Pd25 high-temperature shape memory alloy
(Elsevier Science Sa, 2014)A Ti50.5Ni24.5Pd25 (at%) high-temperature shape memory alloy (HTSMA) was alloyed with 1, 3, and 5 at% Ta additions in an effort to enhance the shape memory properties, particularly the dimensional stability for actuator ... -
Internal mass transfer considerations during the pyrolysis of an isolated spherical softening coal particle
(1989)[No abstract available] -
An investigation of heat transfer gain with introduction of graphite powder to helium gas
(1993)Analysis is made of heat transfer by turbulently flowing helium gas with suspended graphite particles in a circular pipe. At very high temperatures, the radiative heat to gas alone can be profoundly improved because of the ... -
Material Characterization of Ultrasonically Consolidated Laminated Ti-Al Composites (Uc-Lmc)
(Amer Soc Mechanical Engineers, 2016)Ultrasonic consolidation (UC) is an additive manufacturing process where thin and dissimilar metallic layers are bonded through the action of ultrasonic oscillation energy with low energy consumption. The surface oxide ... -
Mechanical and thermal properties of h-MX2 (M = Cr, Mo, W; X = O, S, Se, Te) monolayers: A comparative study
(Amer Inst Physics, 2014)Using density functional theory, we obtain the mechanical and thermal properties of MX2 monolayers (where M = Cr, Mo, W and X = O, S, Se, Te). The C-centered phonon frequencies (i.e., A(1), A(2)'', E ', and E ''), relative ... -
A method for determination of chemical rate mostly encountered in coal combustion processes
(1988)[No abstract available] -
Mo2C as a high capacity anode material: a first-principles study
(Royal Soc Chemistry, 2016)The adsorption and diffusion of Li, Na, K and Ca atoms on a Mo2C monolayer are systematically investigated by using first principles methods. We found that the considered metal atoms are strongly bound to the Mo2C monolayer. ... -
Modelling free and oxide-supported nanoalloy catalysts: comparison of bulk-immiscible Pd-Ir and Au-Rh systems and influence of a TiO2 support
(Royal Soc Chemistry, 2018)The relative stabilities of different chemical arrangements of Pd-Ir and Au-Rh nanoalloys (and their pure metal equivalents) are studied, for a range of compositions, for fcc truncated octahedral 38- and 79-atom nanoparticles ... -
MXenes/graphene heterostructures for Li battery applications: a first principles study
(Royal Soc Chemistry, 2018)MXenes are the newest class of two-dimensional (2D) materials, and they offer great potential in a wide range of applications including electronic devices, sensors, and thermoelectric and energy storage materials. In this ... -
Numerical computation of turbulent flow in pipes
(1993)Developing turbulent flow in pipes of circular cross-section with length-to-diameter ratio of 100 has been computed at eight Reynolds numbers ranging from 3.8 X10 "SUP 4" to 3.88 X10 "SUP 5" . Numerical solutions of the ... -
On the Formability of Ultrasonic Additive Manufactured Al-Ti Laminated Composites
(Springer, 2018)Ultrasonic additive manufacturing (UAM), different from most of additive manufacturing technologies, enables manufacturing of composite parts consisting of two or more materials. The current study focuses on mechanical ... -
Peculiar Piezoelectric Properties of Soft Two-Dimensional Materials
(American Chemical Society, 2016)Group II-VI semiconductor honeycomb monolayers have a noncentrosymmetric crystal structure and therefore are expected to be important for nano piezoelectric device applications. This motivated us to perform first principles ... -
Piezoelectricity in two-dimensional materials: Comparative study between lattice dynamics and ab initio calculations
(Amer Physical Soc, 2017)The elastic constant C-11 and piezoelectric stress constant e(1),(11) of two-dimensional (2D) dielectric materials comprising h-BN, 2H-MoS2, and other transition-metal dichalcogenides and dioxides are calculated using ... -
Positive and negative two-way shape memory effect in [111]-oriented Ni51Ti49 single crystals
(Elsevier Science Sa, 2015)This study investigates the effect of precipitates and compressive loading at selected temperatures on the two-way shape memory effect (TWSME) properties of a [111]-oriented Ni51Ti49 single crystal shape memory alloy. The ... -
Promising Piezoelectric Performance of Single Layer Transition-Metal Dichalcogenides and Dioxides
(American Chemical Society, 2015)Piezoelectricity is a unique material property that allows one to convert mechanical energy into electrical one or vice versa. Transition metal dichalcogenides (TMDC) and transition metal dioxides (TMDO) are expected to ... -
Promising thermoelectric properties of phosphorenes
(IOP Publishing LTD, 2016)Electronic, phononic, and thermoelectric transport properties of single layer black-and blue-phosphorene structures are investigated with first-principles based ballistic electron and phonon transport calculations employing ... -
Real-time virtual clothes try-on system
(Inst Natl Cercetare-Dezvoltare Textile Pielarie-Bucuresti, 2016)Virtual clothes try-on has recently come into the researchers' focus owing to its commercial potential. It can be used as an efficient tool in online shopping, allowing users to narrow down their choices to a few designs ...