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Shows the influence of the proportion of glass reinforcement on the physico-mechanical properties of rod fiberglass reinforcement.
Fig. 2 Dependence of strain of time exposure Conclusion Water absorption is not dependent on the degree of reinforcement and divergence of results due, apparently, technological factors.
In addition to the mechanical properties of the percentage content of reinforcing filler affects the porosity which can be attributed to incomplete impregnation of the fiber-shaped filler.
Mechanical properties of glass-fiber reinforcement along the reinforcing fibers increases almost linearly with the degree of reinforcement.
Deformation properties, on the contrary, decreased with increasing content of fiberglass reinforcement reinforcing fibers.

Special attention in contemporary dentistry is given to the oral health problems affecting children.
Carries lesions can affect the teeth in the primary dentition if good oral hygiene and nutrition are not established.
The decision to use 2D or 3D for analysis with FEM depends on many factors: complexity of dental structure, biological materials, properties etc [5].
The details of the mechanical properties of all materials included in the FE models are listed in Table 1.
Table 1 Mechanical properties of the materials involved in the FEM calculations Material E [MPa] u Bone 1,2x104 0,33 Tooth 2,686x104 0,33 Composite resin 1,83x104 0,35 Gic Fuji IX 0,4x104 0,3 Von Mises stress, which is always positive in sign and depends on the whole stress field, is widely used in dental literature as an indicator of the stress level in a restored structure [9].

In doing so, amplitude of stress intensity factor vary in the range of 20 – 35 MPaÖm.
This causes the accumulation of structural and mechanical damages in the material, formation of corrosion and mechanical micro-defects that are potential sites of fatigue crack nucleation and growth [2].
In addition, the changing of structure and properties under the operation increases the risk of unpredictable failure, so it is necessary to establish the relationship between the statistical characteristics of the material and the mechanisms of its fracture [3].
Thus, it practically does not affect the mechanism of its propagation.
Proceedings of the Institution of Mechanical Engineers, Part F: J.

The influence factors of machine tool's machining precision are geometric errors, thermal errors and cutting force errors.
ZHANG Yaoman et al[3] analyzed thermal properties of spindle assembly and headstock of machining center and calculated the thermal distort of spindle and headstock.
On the base of the literature above, thermal error test and temperture test are done on a certain machine center's mechanical principal spindle.
Then, temperture begin to be main affect factor of displacements of all directions.
FEA of Thermal Properties of Spindle Assembly and Headstock of Machining Center[J].

Combining inorganic fillers and polymers is a common practice in packaging, not only for reduction of costs, but also for improvements of properties that are important in packaging, such as barrier [4,5] and mechanical properties [6].
The introduction of CaCO3 noticeably improved rheological behavior of PHBV by increasing complex viscosity and enhancing mechanical properties.
Unfortunately, the mechanical properties were inferior when an overloaded amount of filler was used.
GPC was used to determine the molecular weight of PHBV samples since it is an important factor influencing properties and applications of polymers.
Zhang, Structure and mechanical properties of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV)/clay nanocomposites, J.

Therefore, domestic and foreign scholars use composite technology to composite materials with different properties to obtain composite materials with excellent properties.
Alumina/aluminum cermet composites have both the good properties of aluminum metal and the excellent properties of alumina ceramics, and have an increasingly important position in modern industrial production [5].
Taking all factors into consideration, it is more appropriate to choose a ball-to-material ratio of 2:1.
Fabrication and properties of Al2O3-Al cermet materials using different raw material. composition parameter [J].
Microstructures and mechanical properties of A356-SiCp/A356 cladding composite materials prepared by vacuum solid-liquid casting [J].

Ultrasonic Transducer Design via APDL Optimization Zhang Xianghuia , Li Guihua b School of Mechanical and Electrical Engineering, North China University of Technology, Beijing, China a email: zhangxianghui1@126.com, b email: liguihuatt@163.com Keywords: ultrasonic transducer; single objective optimization; APDL optimization Abstract.
Like almost all mechanical systems, the transducers are always expected to be optimal.
However, the design of sandwich ultrasonic transducers is a difficult task, because overall characteristics of piezoelectric transducers are affected by various factors such as dimensions of every part, inherent properties of materials, etc.
Table 1 gives those parameters that affect the performance of the ultrasonic transducer.
The whole transfer matrix relation for the ultrasonic transducer is derived as follows: First, the whole transducer is conside -red as a connection of a piezoelectric stack element and three mechanical elements.

From these results, the roll torque was found to be directly affected by the horizontal forces, but the rolling force was not affected.
Introduction One of the purposes for the densification of lumber is to improve its mechanical properties, including surface hardness, Young's modulus, and bending strength.
Therefore, it is important to understand the factors that affect T/2RP.
This paper examines horizontal forces F1 and F2 as the influencing factors.
The variation rates of P were not affected by (∆F1 - ∆F2).

Reasonable design of oil tank and study of oil tank fire extinguishing introducing new method are very important to property safety and social stability.
Vehicle safety monitoring is studied and we analyze and summarize the many factors that affect vehicle safety, and practicality of extracting a representative vehicle safety monitoring technology, analytics implementations.
Mao: Mechanical properties of Jintan mine rock salt under complex stress paths, International Journal of Rock Mechanics and Mining Sciences, Vol.56(2012), p.54-61

Introduction The cut-out of composite structures may cut off the fiber and cause stress concentration, leading to the reduction of loading capacity of components, affecting the service life and the safe abundance of the structure directly, especially for the composite parts in the aeronautic structure.
The analytical method based on an inclusion analogy for determining the thermal residual stresses in an isotropic plate reinforced with a circular orthotropic patch and the explicit formulae for both the elastic properties and the thermal expansion coefficients of the equivalent inclusion is given[4].
Cutting specimens for mechanical tests out of the textile-reinforced composite plates results in a complex non-uniform reinforcement structure at their edges may affect the strength of specimens[5]. 
The basic material properties of Quasi-Isotropic Graphite Epoxy were presented in Table 1.
The bulking deformation around the cut-out caused by the eccentric bending moment by the physical dimension asymmetric may be the key factor.