Güncel Gönderiler: Makine Mühendisliği Bölümü
Toplam kayıt 57, listelenen: 21-40
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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 ... -
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 ... -
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 ... -
Equilibrium limit of thermal conduction and boundary scattering in nanostructures
(Amer Inst Physics, 2014)Determining the lattice thermal conductivity (kappa) of nanostructures is especially challenging in that, aside from the phonon-phonon scattering present in large systems, the scattering of phonons from the system boundary ... -
Harmonised method for impact resistance requirements of E-glass fibre/unsaturated polyester resin composite railway car bodies
(Elsevier Sci LTD, 2018)This paper shows for the first time an approach to harmonise and unify various railway standards into a single method for small object strike against rail vehicles. Emerging composite materials applications for structural ... -
Ab initio calculations of martensitic phase behavior in Ni2FeGa magnetic shape memory alloys
(Elsevier Science Sa, 2014)A series of spin polarized energy calculations based on density functional theory (DFT) have been carried out to investigate the structural, magnetic, electronic and mechanical properties of Ni2FeGa magnetic shape memory ... -
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 ... -
Tailoring Thermal Conductivity of Ge/Si Core-Shell Nanowires
(Wiley-Blackwell, 2015)Low-dimensional nanostructured materials show large variation in their thermal transport properties. Here, we investigate the influence of core-shell architecture on nanowire ( NW) thermal conductivity using molecular ... -
Darbeli Radyo Frekans Enerji Jeneratör ve Anten Tasarımları ve Etkilerinin İncelenmesi
(IEEE, 2017)Elektromanyetik alan ile tedavi sistemleri günümüzün önemli araştırma konularından birisidir. Bu projede DMAT tedavi sistemleri için değişik tiplerde anten ve bobin tasarımları ve analizleri yapılmıştır. EMA maruziyeti, güç ... -
Shape Memory Behavior of [111]-Oriented NiTi Single Crystals After Stress-Assisted Aging
(Chinese Acad Sciences, Inst Metal Research, 2016)The shape memory behavior of [111]-oriented Ni51Ti49 (at.%) single crystals was investigated after stress assisted aging at 500 degrees C for 1.5 h under a compressive stress of -150 MPa. It was found that a single family ... -
U-Shape Slot Antenna Design with High-Strength Ni54Ti46 Alloy
(Springer Heidelberg, 2016)In this paper, a compact, printed, capsule-U-shape ultra-high-strength Ni54Ti46 antenna that can be used in biomedical and communication applications is presented. An accurate electromagnetic model of the shape memory alloy ... -
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 ... -
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 ... -
Compressive response of Ni45.3Ti34.7Hf15Pd5 and Ni45.3Ti29.7Hf20Pd5 shape-memory alloys
(Springer, 2015)The shape-memory properties of Ni45.3Ti34.7Hf15Pd5 and Ni45.3Ti29.7Hf20Pd5 polycrystalline alloys were determined through superelasticity and shape-memory tests in compression. It has been revealed that the Ni45.3Ti34.7Hf15Pd5 ... -
Shape memory and transformation behavior of high strength 60NiTi in compression
(IOP Publishing LTD, 2016)This study investigates the transformation behavior of highly Ni-rich 60NiTi alloys after aging at 600 degrees C for 3 h. After 600 degrees C-3h aging, R-phase disappeared and alloy transformed in one step. The latent heats ... -
Effects of aging on the shape memory and superelasticity behavior of ultra-high strength Ni54Ti46 alloys under compression
(Elsevier Science Sa, 2016)This study investigates the effects of aging on the shape memory and superelasticity behavior of a Ni-rich Ni54Ti46 (at%) alloy. Differential scanning calorimetry (DSC), X-ray diffraction (XRD), transmission electron ... -
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 ... -
Effects of cutting parameters on machinability characteristics of Ni-based superalloys: a review
(De Gruyter Poland Sp Zoo, 2017)Nickel based superalloys offer high strength, corrosion resistance, thermal stability and superb thermal fatigue properties. However, they have been one of the most difficult materials to machine due to these properties. ... -
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 ... -
Effects of orientation on the shape memory behavior of Ni51Ti49 single crystals
(Elsevier Science Sa, 2017)The orientation dependence of the shape memory responses of [001], [011] and [111]-oriented Ni51Ti49 single crystals and Ni50.8Ti49.2 polycrystals are systematically studied in compression. Thermal cycling under constant ...
