Search results

It is well known that welding heat input will greatly affect the microstructure and mechanical properties in the heat-affected zone (HAZ) of steels.
It is generally accepted that the formation of acicular ferrite is one of the most important factors for improving toughness in CGHAZ in high strength steels [7].
Results Microstructural characterization and mechanical properties of the base steel.
Table 2 shows the mechanical properties of as-rolled base plates.
Mechanical properties of CGHAZ with different heat inputs.

Introduction     When predicting the interaction of the vehicle running gear with the soil, you must first research environment (ie, soil mechanical properties). 
Bekker, who created the semi-empirical method, the mechanical properties of the ground into the pressure characteristics (vertical direction) and shear properties (horizontal direction). 
Loads in the mechanical properties of the soil under inquiry, the proven, running gear load is also an important factor. 
Mechanical properties of the soil under two mechanical load Soil under vertical load stress - strain relations.The compressive strength of soil subsidence and directly affects the running resistance of the tire. 
Figure 5 Shear stress, deformation curve Conclusion All in all, the mechanical properties of the soil under the vehicle load factors role has two main aspects. 

Austempered Ductile Iron (ADI) is a new generation of cast iron materials developed in recent decades; but its excellent comprehensive mechanical properties make it become hard-machining material.
The main factors that affect the prediction of cutting force were analyzed with experimental data.
Because of the excellent mechanical and physical properties of ADI, it has been widely used in many fields, such as ships, aerospace and heavy industry.
But how machining ADI becomes a key issue due to its excellent comprehensive mechanical properties which make it become hard-machining material.
The specific cutting process must be analyzed to minimize the controllable influencing factors and remove minor impact factors.

This article listed in the mechanical equipment reliability prediction method starting from the physical properties of the product, give full consideration to the use of the expected environment, abrasion and other degradation, mechanical product failure rate is established.
The combination of these factors makes engineering design parameters can be used to describe the design of the equipment used in known environment life, and the ratio of failure in the design life and patterns.
But at a lower stage, mechanical equipment reliability issues more easily, because affecting the reliability of the design can get a clear understanding of details.
To expect the service life of mechanical components, by considering the specific wear, erosion, fatigue failure mechanism of degradation and the use of lubrication, the possible existence of pollutants, the contact between the loading surface, sliding speed, contact area, surface hardness and material properties[3].
The reliability analysis should include verification that sufficient pressure will be applied to affect a good seal

This phenomenon can be explained by two main influencing factors.
The force affecting the material during rotary swaging consists of two individual components, axial and radial [29].
Rao, Mechanical properties of Aluminum-Copper(p) composite metallic materials, J.
Macháčková, Sub-structure and mechanical properties of twist channel angular pressed aluminium, Mater.
Macháčková, Sub-structure and mechanical properties of twist channel angular pressed aluminium, Mater.

The physical and mechanical properties of the boards were assessed.
Three factors namely grapevine-cement ratio, water-cement ratio and particle size were applied in this study for the board manufacturing.
Table 2 Variable factors Grapevine:cement Water:cement Particle size[mesh] 1:5 7:20 >9 3:10 9:20 9-20 2:5 11:20 20-80 Results and Discussion Hydration Test The results obtained from the hydration test are shown in Table 3.
The physical and mechanical strength properties of the boards were affected by the grapevine-cement and water-cement ratios.
Kakaras, Mechanical and physical properties of cement-bonded OSB, Holz Roh- Werkst. 64(2006)517-518

On the basis of the energy factors concepts, the paper analyzes the extraction process and energy effectiveness model of energy factors.
Introduction Nowadays, energy and environment problems which are caused by the wide use of air-conditioner are greatly affecting the living environment and the sustained development of human beings.
It is the design control mechanism and the control elements which reflect the energy properties in the design process, whose expressions are characteristic number, parameters, indicators etc.
Energy factors extraction.
Three key problems about extraction of energy factor and establishing the energy effectiveness patterns will be studied in detail: the first is the quantitative expression of the influence range of energy properties to the energy elements.

Introduction Awareness of environmental issues and sustainability materials contribute to the important factors that encourage researchers to explore the potential use of natural fibers.
Fiber orientation is one of the factors that influence properties of the composite where the direction affects the stiffness and strength compared to the fibers that are oriented in more than one direction, such as in a mat [8].
This clearly shows that, tensile temperature and the fibers orientation can be affected the composite properties.
While when the fibers orientation opposite of the applied force this also will reduce the mechanical properties of the composite.
Ahmad, “Curing Characteristics, Mechanical and Morphological Properties of Kenaf Fibre/Halloysite Nanotubes Hybrid-Filled Natural Rubber Compounds.”

Here we use ACADS examination questions 1(a)，is a two-dimensional homogeneous slope, material properties as Table 1 , The ultimately recommended answer of the examination question is safety factor of 1.00.
Table 1 Physical and mechanical properties of soil Physical and mechanical parameters Cohesion Internal friction angle Density Modulus of elasticity Poisson's ratio Value 2000 19.6 20 1.0e4 0.25 Fast Lagrange analysis method to determine slope stability factor A.Computing model The coordinate system of calculation as the X axis horizontal, Y-axis vertical, the horizontal distance of 50m, the vertical distance of 20m; using Mohr-Coulomb constitutive model；As the axial deformation can be ignored, so the calculation is a plane strain problem；Boundary conditions：Left and right side for the direction X, the bottom for X＆Y；Grid: direction X is divided into 50 grid, direction Y is divided into 20 grid.
In order to facilitate comparative analysis, fill the safety factors under different pore water pressure in Table 2.
From this example we can found that the affecting of pore water pressure on slope safety factor has a bottleneck, If the pore water pressure break through this bottleneck value, then the slope safety factor will rapidly reducing.
(2) I also calculate the safety factor under different pore water pressure of other typical slope，the results are all correspond with (1)，but the bottleneck values are not same，bottleneck value have a great relationship with the physical and mechanical parameters, height and angle of the slope and other factors of soil.

A number of factors can affect deformation behavior, including the interaction stresses between phases, the crystallographic relationships between phases, and the morphology.
Interaction stresses can result from the difference in the elastic properties of the two phases.
These interaction stresses and strains are determined by a variety of factors, including interfacial area, the strength of the interfaces, and the mechanical properties of the individual phases.
Since these factors can be manipulated during manufacture and processing, the single phase and interaction properties of two-phase alloys can be manipulated to modify the overall bulk mechanical properties and optimize for improved performance.
This necessary stress transfer can considerably affect the bulk deformation behavior based on the relative properties of the two interacting phases.