In this study, multilayer diamond-like carbon films 1 µm thick with different numbers of repetitions were deposited onto austenitic stainless steel SUS304 substrates using source gases. The influence the gas and difference in number on adhesion strength wear resistance was subsequently investigated. samples subjected to cross-sectional microstructure observations, elemental analysis by glow-dis...

For suffi ciently small dimensions, the response of shape memory alloy (SMA) actuators is not independent of the sample size. The response of SMA single crystal micro/nanopillars is shown to depend on the size of the specimen. An increase in the critical stresses for the start and fi nish of austenite to martensite transformation is seen when reducing the diameter into the submicron region. In ...

To improve the surface properties of a substrate coating plays an important role. The performance of the coating layer over the substrate can be known under different load conditions. Finite element simulation is one of the techniques to validate the result where the improvement of the coating is done by optimization. Through FEM, very complex stress strain field of thin films or bulk material ...

Abstract Weight reduction and improved strength are two common engineering goals in the joining sector to benefit transport, aerospace, nuclear industries amongst others. Here, this paper, we show that suitable addition of carbon nanomaterials a tin-based solder material matrix (C-Solder® supplied by Cametics Ltd.) results two-fold soldered composite joints. Single-lap shear joint experiments w...

Laser surface treatment conducted at different power levels is an option to modify titanium bone implants produce nano- and microtopography. However, such processing can lead excess mechanical stress within the layer. This research aims calculate level of residual stresses after Ti grade IV, Ti15Mo, Ti6Al7Nb alloys with Nd:YAG laser. Light scanning electron microscopies (SEM), energy-dispersive...

Abstract In this work, melt-spun ribbons of AlSi10Mg added with modifiers (Er, Sr, or nano-TiB 2 ) were produced to investigate the combined effect modification and rapid solidification on eutectic Si. The resulting microstructures are more isotropic in comparison that base alloy affecting mechanical properties alloys. Si morphology supersaturation caused by investigated microscopy, X-ray diffr...

Mammalian appendages such as hair, quill and wool have a unique structure composed of a cuticle, a cortex and a medulla. The cortex, responsible for the mechanical properties of the fibers, is an assemblage of spindle-shaped keratinized cells bound together by a lipid/protein sandwich called the cell membrane complex. Each cell is itself an assembly of macrofibrils around 300 nm in diameter tha...

INTRODUCTION Cortical bone is an anisotropic material, and its mechanical properties are determined by its composition as well as its microstructure. On the microstructure level (a few microns), cortical bone is composed primarily of single osteons and interstitial lamellae. Nanoindentation has been shown to be an effective technique to probe mechanical properties of microstructures at the micr...

The endothelial glycocalyx is a thin layer of polysaccharide matrix on the luminal surface of endothelial cells (ECs), which contains sulphated proteoglycans and glycoproteins. It is a mechanotransducer and functions as an amplifier of the shear stress on ECs. It controls the vessel permeability and mediates the blood-endothelium interaction. This study investigates the spatial distribution and...