Search results

Furthermore, they concluded that friction between the wheel and rail affected crack propagation.
Due to the higher mechanical properties of U75V, particularly its surface hardness, U75V exhibited a higher slope of crack angle and a lower wear rate compared to U71Mn.
Sura et al. [6] showed the failure mechanism which was related to the several factor such as rim thickness, location of axle load, residual stress.
Table 1 Mechanical properties of wheel and rail according to EN13262 and EN13674-1 standard Component Elastic Modulus (MPa) Yield Strength (MPa) Tensile Strength (MPa) Poisson ratio Elongation (%) Hardness (HBN) Wheel 190,000 540 980 0.3 13 245 Rail 210,000 827 1175 0.3 9 370 However, to improve the analysis for FEM, all models were simplified as shown in Fig. 1.
The mechanical properties of the wheel and rail in this research are presented in Table 1, assuming a linear function from the yield point to the ultimate tensile stress.

ESC is also compatible, and the addition of eggshell has no effect on the fresh properties of concrete.
They have characterised the mineral composition of eggshell and the mechanical properties of this reinforced concrete mixed.
Yerramala, Properties of concrete with eggshell powder as cement replacement. 
Kodanda Rama Rao, Strength and durability Properties of concrete with partially replaced cement with egg shell powder and fine aggregate with Quarry.
Properties of concrete with eggshell powder: A review.

In investment casting, the mechanical strength of investment ceramic shells obviously cannot be overlooked.
The mechanical properties of SL5170 are affected by temperature and strain rate [6].
The instability coefficient is calculated trough the buckling load factor (BLF) that is a multiplicative factor applied to static loads in a static analysis to determine the critical instability load [17].
The glass transition temperature Tg is a material property of the given epoxy resin.
Hadley, An introduction to the mechanical properties of solid polymers, WILEY, 1993.

Furthermore, EHD also has the benefit of being mechanical failure-free owing to its non-mechanical construction.
This mechanical energy causes the ionization of gas molecules, which causes these molecules to accelerate due to the kinetic energy imparted by collision.
Ambient temperature and relative humidity are nuisance factors that affect the drying in a non-uniform way, which might result in erratic data distribution in some cases.
Furthermore, ‘’ is a factor that influences the drying ratio ()[47].
Qu, “Physical and sensory properties of electrohydrodynamic (EHD) dried scallop muscle,” Journal of Aquatic Food Product Technology, vol. 21, no. 3, pp. 238–247, 2012, doi: 10.1080/10498850.2011.590271

Introduction The influence of strain induced precipitation during hot-rolling is a crucial factor in controlling the final microstructure and hence the mechanical properties of microalloyed steels.
Thus, precipitation of microalloying elements plays a very important role in controlling the final microstructure and hence the properties of rolled products.
The aim of the present work is firstly to extend the data on strain induced precipitation using a model microalloyed steel and secondly to compare different mechanical tests operating in different deformation modes.
Among other factors, the dislocation build-up in a material is governed by the type of deformation, which is different for torsion (shear) and dilatometer (axisymmetric compression).
There are few references about the effect of grain size on precipitation kinetics, but it is expected that all factors that influence the flow stress, as the grain size can, will affect the dislocation density and thus precipitation.

And these defects could have very strong adsorption properties of water and oxygen, which are not beneficial to the stability of OSC.
This may significantly change the mechanical and photo-electric properties of films.
Lu, Metal/metal-oxide interfaces: how metal contacts affect the work function and band structure of MoO3, Adv.
Correlation of Localized Structural, Electronic, and Chemical Properties Using Conductive Probe Atomic Force Microscopy and Raman Microprobe Spectroscopy, Langmuir 21 (2005) 3521-3528
Marks, Polymer solar cells with enhanced fill factors, Nat.

Solar Cell Fabrication by Wet Etching Combined with Ultrasonic Vibration for Multicrystalline Silicon Liqun Wu1, a, Yan Chao2, b, Xiaolu Luo3, c School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou, Zhejiang, P.
Front surface texturing in crystalline silicon solar cells has a primary role for improving cell efficiency by means of its antireflection property and light trapping with antireflection [1–3].
Wet chemical processes etch and dry processes etch are two main methods in silicon surface texture preparation, wet chemical etch used sodium or acid to produce pyramids texture on oriented material, while the dry method such as laser-structuring [6], mechanical diamond saw cutting [7], photo-lithographically defined etching [8], porous-Si etching [9], mask less RIE etching [10,11] is recently present to prepare the theoretic texture.
Sodium or acid etching is a stochastic process, and the pyramids structure can be not made regularly, which will affect light trapping.
Since the vibration of molecular is influenced by acid damp, friction between acid molecular and other factors, the motion is a two-stage vibration system.

The chemical structure and properties of cresol red dye are listed in Fig. 1
Chemical structure and properties of cresol red dye.
Accordingly, physical and optical properties of the films were studied and are discussed below. 3.1.
General Properties of Sol and Films The presence of film on the glass slides was indicated by an increase in weight by 140-160 mg after deposition of film.
Boilot, Optical properties of functional hybrid organic-inorganic nanocomposites, Adv.

Introduction Most of the mechanical properties of polycrystals are grain size dependent.
The resulting mechanical behaviour and structural evolution were investigated.
Experimental Results and Discussion Mechanical Behaviour.
It was attempted to characterise the structural features related to the mechanical evolution described above.
The substructure revealed by scanning (SEM) or transmission (TEM) electron microscopy appears fairly affected by the extrusions.

These ultrasonic waves have a multitude of practical applications such as detecting objects, measuring distances across wavelengths, cleaning parts, mixing or accelerating chemical processes. 2.2 Properties of ultrasounds 1.
Unconventional welding technologies are steadily gaining ground as they fill the gaps left by conventional technologies for joining materials with special mechanical properties.[6] 3.1 Components of an ultrasound welding machine Fig. 3.1 Ultrasound welding machine[7] The electromechanical transducer (2) is the active element of an ultrasonic welder, converting the electric current received from the source (1) into elastic oscillations.
The switch to polyester was made because nylon is a material that stretches more and is more prone to premature wear due to the fact that the fabric could easily tear, thus drastically affecting the strength of the material.
Also the high density and low weight helps the comfort factor when worn by vehicle occupants.
A review on ultrasonic welding of various materials and their mechanical properties.