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The main advantages of so called nanocompounds are their - in comparison to microcompounds - outstanding mechanical, thermal and electrical properties.
It is well known that their mechanical and physical properties of semicrystalline polymers are governed by supermolecular morphology, which is controlled by the respective crystallization process.
To know, how nanoparticles affect the crystallization behaviour and the question where they are located in the polymer structure is a key factor for explaining the possible effects of the nanoreinforcements and their extraordinary influence on properties already at low filler contents (< 5 vol.%).
This material was chosen as a representative of polyolefins, which are the most common used thermoplastics due to their well-balanced physical and mechanical properties, easy processing and recycle characteristics.
In addition, in comparison to other engineering thermoplastics, PP has a lower density, allowing potential weight reductions along with excellent moisture barrier properties and good optical properties due to its higher crystallinity [8].

In terms of a stabilizing agent for road rehabilitation and construction, many research studies have confirmed that the properties of GP are similar to that of Portland cement [7].
The basic properties are 130 minutes of initial setting time and compressive strength test more than 40 ksc, which reach the ideal grading curve for geopolymer production by CR.
Based on the emission factors of materials are listed in Table 3.
The emission factors of CR is 0.0045 Kg CO2-e/kg.
Size of crushed rock significantly affects the properties of CR-GP.

Because the process of blade in electrochemical machining(EMC) can be effected by many factors, such as blade shapes, machining electrical field, electrolyte fluid field and anode electrochemical dissolution, different ECM machining parameters maybe result in great affections on blade machining accuracy.
Being a non-mechanical metal removal process, ECM is capable of machining any electrically conductive materials with high stock removal rates regardless of their mechanical properties, such as hardness, elasticity and brittleness.
These process parameters are capable of affecting the machining accuracy of ECM.
According to ECM electrolyte fluid theory, two main factors, electrolyte temperature T and electrolyte pressure between electrolyte inlet and outlet P have important influence on κ.
The main causes resulting in high failure rate is that there are so many various ECM process parameters which can affect ECM process stability and machining accuracy.

RSM is a dynamic and foremost important tool of design of experiment (DOE), wherein the relationship between responses of a process with its input decision variable is mapped to achieve the objective of maximization or minimization of the response properties [5][6].
In addition the most effective factor and the order of importance of the controllable factors to the multi-performance characteristics in the turning process were determined.
Thus, by properly adjusting the control factors, we can improve work efficiency and produce quality parts.
Thus, RSM and grey relational analysis was employed to identify the optimum parameter settings of these significant factors.
Effect of turning parameters on grey relational grade (1, correspond low level factors, 2, corresponds middle level factors and 3 corresponds higher level factors) Analysis of variance Since the experimental design is factorial design, it is then possible to separate out the effect of each machining parameter at different levels.

Based on the selected turbulence model, and considering the natural flow of air as a viscous incompressible steady flow, and the fan blades as the flexible body, simulated the flowing line graph of wind wheel surface, and the overall mechanical performance data at any moment.
As the key component in the wind turbine generator, the blade's performance directly affects the running efficiency and stability of the generator.
[3] FRP material properties [4] Linear density Span-wise elastic modulus shear elastic modulus Poisson's ratio 1.95×103 kg/m 3 1.93×1010 Pa 2.8 8×1 0 10 Pa 0.15 Boundary conditions Boundary conditions at the inlet This article considered the blades as being in a dangerous state of operating conditions, namely high rotate speed in the high-speed wind field, and the wind speed is 25m/s, the rotate speed is 30rpm.
Definition: u1, air flow speed at the wake stream; v0, speed of natural flow; a, inducing factor in the axis direction.
Fig. 5 the stress diagram for the blades Fig. 6 the strain diagram for the blades As shown in the Figure 7 and Figure 8, the force and torque in the root is so big, and there is the periodic aerodynamic force from the complex and unsteady flow field around the experiential blades, therefore, all these factors lead the blades to be flutter, which would speed up the fatigue fracture for the blades.

Introduction It is well known that PP has excellent comprehensive mechanical properties, but PP’s defects, such as slow crystallization rate, poor low temperature impact performance, and large shrinkage from mould dimensions, limit its wider application in different fields.
It indicates that adding few of s-PB can affect PP’s crystallinity significantly.
However, the influence factors are complicated to crystallization and melting behaviors of PP in blends.
Many factors intercept crystalline PP in blends.
Structure or property of PP/UHMWPE blends.

Many researches on the influence of the bolt-ball joints stiffness on dynamic and static mechanical behavior of these structures are carried out by far.
The results indicate that the bending stiffness of joint and load distribution mode are the main factors impacting the stability performance of single-layer reticulated domes [8]. 4）Z.H.
The results show the bending stiffness is one of the key parameters which affects on the load-carrying capacity of such structures [10]. 6）In order to study the mechanical behavior of semi-rigid Socket joint which is widely used in spatial structures，experiments on 9 specimens were carried out．The experimental studies indicate that the Socket joint has good bending moment capacity and ductility，and it doesn’t reflect the real condition to accept it as a pinned joint [11]. 7） Buckling collapse and its analytical method of steel reticulated domes with semi-rigid ball joints are discussed.
The mechanical property of this joint model is proved to be reliable by comparing the data from experiments and finite element analysis [18,19].
Mechanical performance of single-layer reticulated domes with semi-rigid bolt-ball joints.

The main constraining factor for their use in highway and railroad building is their physico-mechanical deterioration when they are wet: they demonstrate extreme water absorption, swelling, stickiness, plasticity and stress reduction.
Therefore, the problem of developing the “efficient” modifiers of clay soils that can improve their strength properties without lifetime reducing seems to be important.
In this work we study the effect of nano-scale chemical additives on physico-mechanical properties of clay soils; specifically, the montmorillonite clays are taken as an example.
To calculate the energies and the structure properties of montmorillonite clusters we used the set of quantum-chemical software kit – MOPAC 2009 (Version 11.038W), parametric model – PM6.
Fig. 2 Total energies of the layered structure fragments of montmorillonite with inserted ions It is known that water can significantly affect physico-mechanical properties of clay soils.

However, a sustainable concrete is not easy to define; there are many factors that may change its components during its life span.
The heat loss through the kiln structure is an important factor beside the cement kiln technology which affects directly the amount of heat energy to produce the clinker. 1 ton of clinker produced = 3~7 G.
As defined by the Italian technical standards for construction reference DM 14.01.2008 [17], concrete and/or structure durability is defined by the retention of its physical and mechanical properties which are essentials to maintain the lifespan safety of the structure.
Concrete durability can be achieved through resisting weathering and any other exterior degradation factors by maintaining its characteristic performance.
ü The exposure factors affecting the concrete durability.

This paper analyzes the factors, which causes the no-linear of the ultrasonic in the processing system, and the reasons of the ultrasonic reflection and transmission at the contact interface according to the wave theory.
For a long time, due to the test conditions and other factors, many scholars did not focus on the contact interface effects on the system dynamics, or limited to empirical understanding.
The properties of the material at the contact interface is inconsistent so discontinuous propagation occurs at the interface.
The contact interface pretension and the connection mode often leads to instability of the ultrasonic energy output, which producing a great effect on the ultrasonic vibration, thereby affecting the effect of ultrasonic machining.
Fig.5 Trends of the amplitude and preload Fig. 6 Test site Fig.7 Vibrational spectrum shape and dimensional array map when preload 0.046N Fig.8 Vibrational spectrum shape and dimensional array map when preload 0.058N Conclusions Ultrasonic propagation in the material is affected by the physical properties of the material, this paper only discussed the reason that ultrasonic may occur reflection, transmission in the contact interface in ultrasonic machineing, discussed its propagation in the contact interface, through the test established the relationship between piezoelectric ceramics preload and ultrasonic vibration effects.