The present paper takes some machine frames as the object of study, three dimensional model is based on the CATIA software, the model and the hypothesized assembly are carried by the CATIA software. It is firstly introduced the aviation manufacture project development by proposed new request, the CATIA...

The structure and properties of a wrought Mg–Al–Zn–Mn alloy (MA5 brand) were characterized by SEM and direct pole figure (DPF). The crystallographic texture and strength anisotropy of the alloy subjected to unconventional thermomechanical treatment (lengthwise section rolling) clearly show marked improvement...

Methods of transmission including high-resolution electron microscopy were used to examine the kinetics of collective recrystallization in submicrocrystalline titanium Grade-4 and VT1-0. The temperature dependence and values of the activation energy for collective recrystallization have been determined....

In this research, instrumented nanoindentation tests were performed to determine the mechanical properties associated with pop-in events of the ZrB2-SiC composites reinforced with and without the mixture of boron nitride nanotubes (BNNTs) and boron nitride nanoplatelets (BNNPs). The results show the...

Wooden structures pollute the environment considerably less than the structures made of bricks, glass or concrete. Walls that use composite gypsum and cardboard-based materials and gypsum and cellulosic fibers-based materials for the interior surface of the walls have been selected for the evaluation...

The oxidation behavior of the amorphous ribbons heat treated under different temperature and holding time was deeply investigated. The oxidation morphology was observed by using of SEM equipment. The experiment results show that at the initial stage of oxidation, the morphology of the oxides is small...

This paper presents the experimental program and measured results, obtained model, statistic analysis and some graphics for springback angle of common sheet metal. There were considered three bending parameters: bending’s angle, sheet’s thickness and radius’ punch. The obtained model is interactive second...

Magnetic properties and magnetocaloric effects (MCE) of the tetragonal (ThCr2Si2-type) PrFe2Ge2 compound are investigated. The compound is determined to be antiferromagnet with the Néel temperature TN=14.5 K and undergoes a transition towards an incommensurate modulated structure at 7 K. A field-induced...

A kind of laser scanning weld seam tracking system is studied. The calibration method for the system parameters is presented and the recognition method for the seam characteristic point is given based on digital image processing. Firstly, preprocess the laser image using median filter method, adaptive...

By using Ca particles as thickening agent and titanium hydride as blowing agent Cellular Al-0.16Sc-0.08Zr foams with a porosity of 72.5±0.5% were successfully fabricated by the melt-foaming method Isochronal aging treatments are beneficial to improve the mechanical properties and corrosion resistance...

For reducing the effect of flexibility, backlash and friction, which is brought by the harmonic gear in the system, this paper proposes a kind of multiple loops’ control method based on double speed loops. The control system includes double speed loops and current loop. Double speed loops are consist...

Microbial extracellular polymeric substances (EPS) have been considered as important renewable resources and technologies. Lately many studies are looking for valuable EPS as well as algae with production potentials and corresponding extraction methods. Spirogyra spp. is a genus of large filamentous...

Cladophora glomera is a genus of widely distributed, global, sessile, large green algae, which is also a euryhaline alga. This study discovered that changes in salinity can induce C. glomera to produce massive amounts of extracellular polymeric substance (EPS) when controlling other environmental conditions....

Compared with the conventional gas turbine, the micro gas turbine has the advantages of small size, light weight, and high power density energy. The application prospect is very broad in the future. However, lots of traditional cooling designs cannot be applied to the disks at the micro scale, which...

Mortars have many uses in construction: to lighten, sonic and thermal insulation, aesthetic purposes, to protect against environmental attack, repair, conservation, union masonry, etc. Mortar matrices may be Portland cement, lime, gypsum, clay and soil, asphalt or polymers. This work shows the result...