Usually additive manufactured metal parts are showing a different mechanical behavior compared to conventionally produced parts used the same material. Apart from process-related macroscopic part imperfections (pores, surface roughness, etc.) the microstructure has a decisive influence on the mechanical properties of the materials. Thus, in order to optimize mechanical properties of metal parts...

Robot mechanisms science must be understood as acquiring an in-depth understanding of the mechanical behavior of a robot and involve domains such as kinematics, dynamics and singularity analysis. Two issues must be addressed: • analysis: determine all the mechanical properties of a given robot that are necessary to control it and to verify that its behavior will satisfy a given set of requireme...

CAD Computer Aided Design typically involves the design manufacture and inspection of a me chanical part The problem of reverse engineering is to take an existing mechanical part as the point of departure and to inspect or produce a design and perhaps a manufacturing process for the part We propose to explore the feasibility of a new approach to inspection and reverse engineering applications I...

Inspired by the idea of charge decomposition in calculation of the dipole preserving and polarization consistent charges (Zhang et al., J. Comput. Chem. 2011, 32, 2127), we have proposed a numerically stable restrained electrostatic potential (ESP)-based charge fitting method for protein. The atomic charge is composed of two parts. The dominant part is fixed to a predefined value (e.g., AMBER c...

In this paper we explain the mechanical design of the robot herring that we have developed. The use of mechanical accumulators is a fundamental issue in the design of this robot. Two different types of mechanical accumulators are implemented and tested as a spine on the robot. We argue that using an Euler buckled spine, on a robot fish, will give more efficient robots and a naturally occurring ...

Molecular mechanical logic devices have been proposed as a method of eventually achieving very small size (device volumes of a few cubic nanometers) and thus of achieving very high packing densities. However, the heat generated by mole quantities of molecular mechanical logic devices packed into a small volume can be a major problem. Previous mechanical logic devices (in which the logic gates i...

Objective(s): Scaffolds are considered as biological substitutes in bone defects which improve and accelerate the healing process of surrounding tissue. In recent years a major challenge in biomaterials is to produce porous materials with properties similar to bone tissue. In this study, the natural bioactive hydroxyapatite scaffolds with nano Diopside /Forstrite coating was successfully synthe...

The first step in mining activities is rock excavation in both mine development and production. Constant pressure for cost reduction and creating an improved/safe work environment for personnel has naturally resulted in increased use of mechanical excavation systems in many mining operations. Also, mechanical excavation and mining is more compatible with automation, meaning possibility of reduc...

Loading conditions and complex geometry have led the cylinder heads to become the most challenging parts of diesel engines. One of the most important durability problems in diesel engines is due to the cracks valves bridge area. The purpose of this study is a thermo-mechanical analysis of cylinder heads of diesel engines using a two-layer viscoelasticity model. The results of the thermo-mechani...