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The aggregated particles in composite materials tend to increase the susceptibility to chemical and mechanical failure.
In order to get nanocomposites with satisfactory mechanical properties, the dried nanoparticles should be isolated from aqueous solution and dispersed individually in the polymer matrix homogeneously no matter which kinds of manufacturing processes are adopted such as freeze-drying, surface modification, and special dispersion processes [3-6].
Polyethylene glycol (PEG, Mw: 6000), poly(propyl oxide)-poly (ethyl oxide)-co-poly(propyl oxide) (Pluronic F-127, Mw: 12,000) and poly(d, l-lactide)-co-poly (ethylene glycol) (PELA, Mw: 20,000) were selected to improve the dispersion of n-HA crystallites and modify their surface properties.
The development of techniques to improve the colloid stability of n-HA crystallites would be beneficial for the processing of n-HA/polymer composites with improved mechanical properties and potentially enhanced bioactivity, bone healing and remodeling abilities.
Several factors are crucial to affect the colloid stability of HAP, which include special groups existing on the n-HA surface, the solvent used to disperse n-HA particles and the drying process to harvest n-HA particles, etc.

It is worth noting that in screen printing electronic products, the characteristics and quality of products are affected by more than 50 factors, such as printing speed, angle and shape of scraper[28].
There are many factors affecting the quality of gravure printing, such as the rheological properties of nanowire ink in the transfer process [32], the surface wettability of ink [33], etc.
Moreover, the silver nanowires were sintered by intense pulsed light (IPL)irradiation to ensure the films have high optical, electronic and mechanical properties.
Although the etching method has some advantages in the properties of the films, and the operation is simple, there are still some defects.
In the process of etching, the etching solution will penetrate into some areas that need to be retained, resulting in over etching, thus affecting the fineness of the pattern.

The different methods only influence the surface region of the components so that the bulk properties are not affected.
Alloying additions such as Nb can improve the oxidation behavior [3] but alloying of the whole bulk material influences the mechanical properties.
However, brittle coatings can cause failure due to crack initiation during thermocyclic exposure and mechanical load [5].
The performance of the F-BLI² sample can be improved by increasing the dose by a factor of two from 1 to 2 × 10 17 F/cm².
These would be applied after the processing of the components without deteriorating the previous modified properties (microstructure, strength, etc.).

Many factors of the scene, such as lighting conditions, the measured object geometry and surface characteristics, noise and the camera features, are all concentrated in the image grayscale value, so image matching has been the focus of study in stereo vision field.
Although, the important geometrical property of epipolar line constraint of stereo vision system can provide certain facilities for image matching, the searching process along such epipolar lines is still very time-consuming and is affected seriously by noise.
When the mapping process of stereo vision system between 2D image coordinates of object points and 3D coordinates of scene is stimulated by the BP neural network, it is not need to build a complex system recovery model, and not need to consider the effects of lens distortion and environment factors, so this can reduce the error as a result of incomplete mathematical mode and improve the reconstruction accuracy of 3D coordinates.
Liu: China Mechanical Engineering, Vol. 14(2003) No.1, pp.9-12.
Mark: Neural Network Design (Mechanical Industry Press, China, 2002), pp.197-222.

This problem is the main factor which affects the quality of the fine-blanked parts.
The mechanical properties of workpiece were an ultimate tensile strength of 530 MPa and an elongation of 26%.
The bridge width is generally known as an important parameter which affects on the deflection of the product and material strip.
However, the bridge width also affects on the material flow features.
The results illustrated that the bridge width affected on the material flow feature as well as the amount of die-roll formation.

The research results indicate that resistance degradation of members affected by low cycle fatigue damage leads to strength and stiffness degradation.
In addition, the strength deterioration of members rapidly was affected by existing strength deterioration model due to the serious cracking of concrete and compressive yielding of longitudinal reinforcement after the member arrived at ultimate strength.
So the destroy index can be expressed by the cumulative hysteretic energy, it was rewritten as (8) where, is the hysteretic energy dissipation in the ith half-cycle, is the strength deterioration factor about member parameters
In contrast to Park-Ang model, the damage model established in this paper can reflect the variation of their mechanical properties under a horizontal earthquake action reasonably.

Introduction Ultrasonic motors (USM) principles of operations are based on the concept of driving the rotor by a mechanical vibration force generated on the stator (PZT Transducer) via piezoelectric effect.
Mishandling of material deformation can produce a jerking effect, which can affect degree of accuracy of the USM.
Using these relations the torque factor of the motor and the diameter of the rotor including driving wheel and the shaft can be determined.
The transferred force to the shaft can be determined using the following torque factor relationship: (3) This relation shows that the torque factor has to be carefully selected during the design process of the motor.
This considered the properties of the material used to manufacture the shaft and the moment of inertia of the rotor.

Material mechanical properties The thermal parameters are the most important factor affecting the hot forming simulation.
The mechanical properties of 22MnB5 steel are extracted from NUMISHEET2008 benchmark03[10] and the material basic parameters are listed in Table 1 including density ρ, heat capacity Cp, thermal conductivity k, linear expansion α, Young’s modulus E and Poisson’s ratio v.
They are calculated using the properties of the air at the film temperature, Tfilm=(940+20)/2=480°C.
The properties of the air are shown in Table 3, including density ρ, heat capacity Cp, thermal conductivity k, viscosity μ and volumetric expansion β.
MAT 106 is selected in the blank, which may enter data tables of the material as a function of temperature including stress-strain, Young’s modulus, Poisson’s ratio, thermal conductivity, heat capacity and so on Material mechanical properties.

The advantage of the system lies in the inexpensive raw materials, but they are also responsible for the relatively weak part properties.
The scaling factor is provided by the machine manufacturer to take shrinkage of a material and the machine specific process conditions into account.
Geometry is an important factor, since wall-thicknesses affecting shrinkage rates.
Technologies, which rely on support structures, are introducing an additional geometric element and constraint, which in turn affects accuracy.
Osman, Effect of layer printing delay on the mechanical properties and dimensional accuracy of 3D printed porous prototypes in bone tissue engineering, Ceramics International, http://dx.doi.org/10.1016/j.ceramint.2015.03.004

They revealed that inhaled fumes particles having distinct morphologies, surface properties, and chemical composition had a distinct biological effect on the working operator.
A tungsten carbide drill bit of 600 μm was considered as a tool electrode due to its high melting point (2850 ℃) and good mechanical properties i.e high toughness and hardness.
Whereas the concentration of fumes particles is affected by the spark energy produced in the machining zone.
Fig. 4 Variation of FMC with electrolyte concentration Fig. 5 Variation of FMC with the duty cycle Morphological analysis of fumes particles The morphology of fume particles is primarily used for analysing aerodynamic properties and surface area of particles.
The quantity of inhaled fumes particles significantly depends on two factors (i) aerodynamic properties and (ii) surface area of particles [13].