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Charpy impact test is very sensitive to mechanical processing technologies and product defects.
The center of percussion is different from the designed center of strike and this difference can affect the vibration energy on the pendulum.
Charpy impact test is the most widely used method to test the dynamic properties of materials.
Energy that is lost through other factors is not intended to be included in the measured Charpy energy.
The pendulum vibration energy is one of the important factors affecting the measuring accuracy of the impact absorbing energy, so reducing the vibrational energy of the pendulum can be used to improve the measurement accuracy of the Charpy impact test.

The results obtained by the method of mathematical planning of the experiment made it possible to develop a model of ceramic bricks of the racial composition, to construct empirical dependencies in the system «technogenic product-technological factor-property» and to establish the influence of the addition of fuel slag on the basic physical and mechanical properties of wall ceramics: strength, density, water absorption , shrinkage.
Durability is determined by the combination of physical and mechanical properties of building materials used for the erection of objects.
This raw material has certain properties that affect the quality of products.
In the course of the experiment, standard methods for studying raw materials, analyzing the structure and properties of raw materials were applied.
At the same time, the use of fuel slags allowed to obtain new knowledge about their influence on the structure formation of ceramic bricks and the physical and mechanical properties.

Jia et al. [4] describes the theory and properties of the false compound TbxDy(1-x)Fe2, which has the cubic and Laves-phase structure as Rfe2 possesses much larger magnetostriction in room temperature.
The simulation results indicate that there are many factors which have influence on the resonance frequency.
The moment of inertia of the mirror and mirror support is one of the most significant factors, and the stiffness of the suspension also.
A true mechanical structure was manufactured according to the optimized model.
By virtue of the numerical simulation, many factors which affect the natural frequency of the system are obtained at very low cost, and finally the reasonable model is achieved, corresponding mechanical structure is produced.

Cement soil strength properties [D].
Unconfined compression strength of cement soil factors affecting indoor experimental study [J].Geotechnical Investigation &Surveying, 2005, (3), 8-10
Study on engineering properties of cement-stabilized soil [J].
Experimental study on mechanical properties of cement soil [J].Railway construction, 2001, 8, 31-32
Experimental study on properties of cement soil [J].

Mechanical properties of M-starch/SBR biocomposites were superior than those of unmodified starch/SBR biocomposites.
Several research showed that particle size, dispersion and compatibility were important factors on the properties of starch/rubber composites.
And particle size of starch significantly affected the mechanical property of composites.
Results and Discussion Mechanical Properties.
Coupling agent SMA acted as crosslinking core and therefore improved the mechanical properties.

Surface roughness influence the performance of mechanical component and production cost because its affects factors such as friction, tolerance and more [7].
These high quality epoxy resin bonded glass fabric laminates offer very high mechanical strength and low moisture absorption, combined with excellent electrical properties, under both dry and humid conditions.
The dimension of the workpiecesis 30 mm x 300mm.The mechanical property of e glass fiber is tabulated in Table 1.
Table 1.PROPERTIES OF GFRP PROPERTIES GFRP DENSITY 2.6 g/cm3 TENSILE STRENGTH 3400MPa MODULUS OF ELASTICITY 73000 THERMAL COEFFICIENT 5x 10-6/°C SOFTENING TEMPERATURE 850 °C Fig 1.
The surface roughness are mainly affected by feed rate.

By applying appropriate manufacturing technique for laminated composite, the curing condition of the laminate is one of the factors that will influence the properties of composite.
Mechanical and physical properties may be different when the laminated composite is cured at different angle position.
The behavior of the load bearing composite under the tensile load is mainly dependent on the factors of stiffness and strength of the fibers [12].
From the data, SN4 (45˚) did not gave a good mechanical properties for the laminated composite to be cured at this angle as the behaviour of the composite will be changed sharply than control sample.
Kumar, Mercerization of flax fiber improves the mechanical properties of fiber-reinforced composites, Int.

The aim of these experiments is to carefully and precisely examine the impact of the heat treatment process on the welded joints’ physical properties and microstructure properties.
The results show that the heat treatment does enhance the mechanical properties of the material, but it is essential to conduct experiments to find the optimized parameters; or else, the properties will decrease largely.
The selection of the welding method is also one of the key factors in the success of a sound weld.
Mechanical properties of samples: (a) tensile strength, (b) hardness Design for Experiment Follow Taguchi Model To study the design for experiment for the heat treatment process for the welded samples, the Taguchi model is employed in this study.
Experimental type 3k is an experimental planning for two factors (temperature and hours) with three values: highest (+1), standard (0) and lowest (-1).

There are multiple factors which have an effect on springback, such as mechanical properties of the material, friction conditions, and process parameters and so on.
Material Properties Simulation of the forming processes based on finite element method using Dynaform 5.8.1 software requires as input data the mechanical properties of the used materials.
Determination accuracy of the mechanical properties has an important influence on simulation results.
The results from the tensile test for FEPO steel are shown in figure 1 and the mechanical properties are presented in table 1.
By varying the values of all factors simultaneously, a statistically validated estimate of the results for every possible combination of the factors is possible.

Die casting defects occur because of failure of complex and diverse, from the analysis below of several failures in the form casting mold and start to explore the main factors in the practical application of some measures to improve the life of die-casting mold.
The plastic material toughness is associated with this phenomenon corresponds to the most important mechanical properties.
To maximize the potential of mold steel, heat-resistant mold steel is generally more than to go through repeated rolling or forging process pier, to destroy the original band structure, or carbide together to improve their mechanical properties.
mold and mold manufacturing precision manufacturing process.old and mold manufacturing precision manufacturing process, is also an important factor affecting the life of the mold.
Conclusions Die-casting die life is affecting product quality, production efficiency of the key.