Abstract In this study copper-silver (CuAg) structures with varying Ag content were fabricated by in situ alloying and Laser Powder Bed Fusion (L-PBF) Additive Manufacturing (AM). morphology, distribution elemental analysis conducted using Scanning Electron Microscopy (SEM) dynamic imaging for CuAg10, CuAg20 CuAg30 atomised powder. The resultant pore defect morphology each as built annealed CuA...

Polymer composites have attracted considerable attention as potential light weight and cost-effective shielding materials which could be used for applications in nuclear reactors, waste transportation, protective cloth/apron personnel hospitals, instruments on-board satellites from space radiations. In this context, we developed diglycidyl ether of bisphenol A (DGEBA)-based epoxy resin loaded w...

indicate that the mechanical properties such as Young's Modulus of thin films are significantly different from the bulk values. Due to the lack of proper understanding of the physics in the micro-scale domain the state-of-art estimation techniques are unreliable and often unfit for use for predicating the mechanical behavior of slight modifications of existing designs as well as new designs. Th...

We use the Surface Evolver to determine the shear modulus G of a dry 2D foam of 2500 bubbles, using both extensional and simple shear. We examine G for a range of monodisperse, bidisperse and polydisperse foams, and relate it to various measures of the structural disorder of each foam. In all cases, the shear modulus of a foam decreases with increasing disorder.

A novel iterative approach is presented to estimate Young's modulus in homogeneous soft tissues using vibration sonoelastography. A low-frequency (below 100 Hz) external vibration is applied and three or more consecutive frames of B-scan image data are recorded. The internal vibrational motion of the soft tissue structures is calculated from 2D displacements between pairs of consecutive frames,...

In this work, we introduced an elastographic simulation framework, which estimates upper bounds on elastographic image quality by accounting for three-dimensional (3D) tissue motion and the 3D nature of the ultrasound beam. For the boundary conditions and the range of applied strains considered in this study, it was observed that for applied strains smaller than 0.7%, fast two-dimensional (2D) ...

At present, 3D printing is experiencing a great boom. The demand for new materials also related to its expansion. This paper deals with manufacturing innovative polymer composite filaments suitable the Fused Filament Fabrication method in printing. As filler, common and uncostly glass beads were used mixed biocompatible biodegradable poly (ε-caprolactone), as matrix. material was characterized ...

In this paper we give an effective method for finding a unique representative of each orbit of the adjoint and coadjoint action of the real affine orthogonal group on its Lie algebra. In both cases there are orbits which have a modulus that is different from the usual invariants for orthogonal groups. We find an unexplained bijection between adjoint and coadjoint orbits. As a special case, we c...