Materials Literature
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Finite element simulation is presented to study the rate effects of the shape memory response of bent NiTi wire “C-shaped” exposure to load. A three-dimensional constitutive model for shape memory alloys proposed by Auricchio is implemented in the built-in library of Ansys Workbench 18.2 to capture the shape memory be…
Phononic metamaterials are capable of manipulating mechanical wave propagation in applications ranging from nanoscale heat transfer to noise and vibration mitigation. The design of phononic metamaterials to control low-frequency vibrations, such as those induced by ground transportation and low-amplitude seismic waves…
In this work, a novel approach combining liquid deposition with selective laser melting (SLM) is used for fabricating reduced graphene oxide (RGO)/S136 metal matrix composites (MMCs). The grain sizes, crystallographic textures, phase compositions and mechanical properties can be tailored by controlling the RGO content…
In this paper, we study the mechanical behavior of surface nanoconnectors that are developed using two contacting sets of patterned copper (Cu) nanowire (NW) arrays. Specifically, comprehensive molecular dynamics (MD) simulations are conducted to establish the mechanics and the mechanisms involved at the atomic level…
Interactions of superconducting Nb(47 wt% Ti) with liquid binary In-35 wt% Sn and Bi-containing ternary (In, 15 wt% Bi)-35 wt% Sn solders have been examined for the first time up to 450 °C. Reaction of NbTi with InSn results in an intermetallic phase, (Nb,Ti)Sn2, the morphology and chemical composition of which depend…
The present work deals with the experimental determination of enhancement in the heat transfer using ZnO nanofluid in helical copper tube heat exchanger at constant wall temperature. ZnO nanoparticles were prepared with aid of ultrasonic irradiations using zinc nitrate and KOH as raw materials. The effect of Reynolds…
The removal mechanism of machinable ceramics in turning was studied, and a theoretical model of cutting force based on energy theory was proposed. Based on the turning test of machinable ceramics and kinematics analysis of the tool-workpiece system, a model of tool-workpiece contact zone considering the tool tip arc r…
The β relaxation is a crucial feature in metallic glasses (MGs). However, its structural origin is not fully elucidated. Using a contact resonance atomic force microscope, we investigated the local structural heterogeneity of MGs and its correlation with β relaxations. It was found that MGs have various degrees of the…
Abstract RNA interference (RNAi) has potential advantages over other gene therapy approaches due to its high specificity and the ability to inhibit target gene expression. However, the stability and tissue-specific delivery of siRNA remain as the biggest obstacles for RNAi therapeutics. Here, we developed such a syste…
The influence of the particle size distribution on the strength of the coated Al2O3 parts was studied, through the size and distribution of the sintered neck. The powder was heated in situ by a UV laser, and the relationship between the sintered neck waist diameter and the particle diameter was obtained under an image…
The carbon fiber/epoxy resin composites were prepared by the resin transfer molding (RTM) process. Effect of resin toughness and carbon fiber type on the high speed impact properties was investigated using the air cannon impact test. The effect of high speed impact damage on the residual compressive property of the co…
Titanium dioxide/graphene (TiO2/G) composite conductive materials were prepared by modified hydrothermal method. The effects of hydrothermal temperature and the amount of graphene on the electrical conductivity of the composites were investigated. The structure, microstructure and conductivity of the composites were c…
The influence of cast steel shot-peening on the tensile properties of the second generation single crystal superalloy DD6 under 500, 600,650℃ was investigated by SEM, X-ray and TEM. The results show that the shot-peening has no influence on the tensile strength of DD6 alloy at 500, 600,650℃, and the yield strength is…
In this study, the microstructures and electrical and mechanical properties of Cu-1.3 mass%Cr (1.3Cr) and Cu-2.5 mass%Cr (2.5Cr) alloy specimens fabricated by selective laser melting (SLM) were investigated. The effects of heat treatment on the microstructures and properties of the SLM specimens were also studied. Cu-…
The paper evaluates the spatial damage sensing ability of self-sensing mortars containing up to 40% waste metallic iron powder by volume as cement-replacement. The spatial damage-sensing ability is evaluated using a framework that integrates the electrical resistance tomography (ERT)-based conductivity reconstruction…
Growth mechanisms of dynamic granular arrays based on magnetically controlled particles are presented. Method of the external rotating magnetic field (ERMF), based on a dipole interaction of magnetic spherical Fe3O4 particles in highly ordered volume arrays is proposed and a design for its practical implementation is…
Cemented carbides with mesoscopically non-homogeneous properties by design represent a potential to enhance performance in metal cutting and rock drilling. Development of in-homogeneous structured hard materials through an ICME approach requires a thorough understanding of diffusion kinetics during solid and liquid st…
Global ocean circulation, governed by the salinity of seawater, is a key contributor in supporting marine life and in regulating climate. Biologging has enabled researchers to record in-situ ocean parameters from free-ranging animals, as they swim through their environment. Current salinity sensors are bulky, expensiv…