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A plastic brick clay with high clay mineral content was selected and the effects of different extruder heads on the main physical properties of the extruded products were investigated.
In addition to the physical properties of the products, the pressure caused by the extruder heads was determined by theoretical calculation and measurement.
The results obtained through an optimized inner geometry or rotation speed of the extruder screw have beneficial effects on product properties or reduce power consumption [1, 2, 3, 4].
Pressure depends not only on the geometry of the screw and the head, but the on rheological properties of the clays used [5, 6].
The physical properties of fired brick products changed to a measurable extent depending on the shape of the extruder heads and the rotation of the extruder screw.

For finding the properties about heating plastic material, some researchers analyze temperature distribution in poly(ethylene terephthalate), PET, plate when heated [1].
Moreover, the side of preform is one of the factors about the actual receiving the energy from the lamps through radiation.
Moreover, each lamb power intensity is different for a better temperature distribution on the bottle.[6,7] All these factors must be decided before machine working.
We use numerical method to predict the number of all factors first, and then we check the values about all factors with experiments.
The main factors about the lamps are the power intensity of each lamp.

Many physical factors, including the inappropriate materials composition, may induce gear failure.
Mechanical properties Analysis. 5.1.
High brittle properties of material doesn’t suitable for gears.
It is clear from the above results that increasing the glass fiber content in polymer composites results in excellent mechanical properties.
[9] V.Karthi, K.Marimuthu, Experimental Analysis of Mechanical And Metallurgical Properties of Polymer Matrix composites material for wear reduction in Gears.

(1) Random errors are mainly caused by some factors which are difficult to control, such as the fluctuations of measurement value, detection personnel proficiency, sensory errors and changes in external conditions and a series of problems.
Statistical properties are mostly following a normal distribution.
(3) Systematic errors are mainly caused by detection equipment defective, incomplete or not the specified conditions, the experimental theory, using the instruments incomplete or not in accordance with the specified conditions, experimental theory, experimental methods or experimental conditions not meting the requirements, detection personal habits and other factors.
It contains many factors that light brightness, device performance, binocular imaging system mounting structure, camera imaging model, image preprocessing, image positioning and segmentation, stereo matching and 3D reconstruction, detection process and other processes, affect systematic errors [2].
The Impact of Lighting Brightness The light brightness is an important factor to affect obtained image quality in the environment.

A decrease in the machinability of this material is associated with a change in their mechanical and thermophysical properties during grinding to ensure the specified dimensions.
Thus, microhardness of the surface decreases with an increase in the temperature in the cutting zone; therefore, all operating factors contributing to an increase in the temperature in the cutting zone or an increase in the duration of thermal exposure lead to a decrease in surface hardening.
The depth of cut and the control wheel speed affect the dimensions of the machined part by reducing the actual metal removal from the machined surface, but at the same time practically do not affect the stability of the resulting dimensions. 4.
Strelnikov, The influence of the formulation components and the mixing technology on physical and mechanical properties of abrasive wheel, MATEC Web of Conferences 297, 09005 (2019). https://doi.org/10.1051/matecconf/201929709005 [2] D.B.
Bovnegra, Improving the Performance Properties of Abrasive Tools at the Stage of Their Operation, Lecture Notes in Networks and Systems 76, pp. 136-145 (2020). doi: 10.1007/978-3-030-18072-0_15 [9] V.

This project is to develop a simple method to identify tribological properties of various lubricants by metal forming method.
Ring compression test is one of the most popular methods to evaluate friction condition because the deformation of the ring is easily affected by the lubrication.
t = mk (2) Euler’s fixed meshing where m is the friction factor and k= σ/3 is the shear yield stress.
The developed simulator proves its capability to generate an accurate friction calibration curve and able to predict a lubricant’s coefficient of friction, µ and shear factor, m.
Acknowledgement The authors would like to thanks Lee Wai Kit and Richard Wong King Sung, graduates of mechanical engineering, UTAR for helping the authors in collecting the experiment data.

During the aging process, two factors react.
The combination of the two factors improves the strength and superelasticity of the specimens till the over-aging arises corresponding to the 72h aging duration.
Xu, Factors affecting recovery stress in Fe–Mn–Si–Cr–Ni–C shape memory alloys, Materials Science and Engineering: A 528 (2011) 1125-1130
Chumlyakov, The effect of nanoprecipitates on the superelastic properties of FeNiCoAlTa shape memory alloy single crystals, Acta Materialia 61 (2013) 3445-3455
Abrudeanu, Characterization of the mechanical dissipation in shape-memory alloys during stress-induced phase transformation, Journal of Materials Science 3 (2013) 1-5

Shielding properties of the composites against thermal and Cf-252 fast neutron were measured.
Factors affecting the shielding properties were investigated.
It can be seen that with increasing boron mole numbers per unit volume, the qualities of two factors increased accordingly.
Cf-252 fast neutron shielding properties.
The fast neutron shielding properties of four samples are shown in Fig.8.

Numerous research studies have been performed on mechanical properties of fiber concrete and concrete structural members reinforced with fibers under various loading conditions.
Because of the damping ratio of reinforced concrete structures change range is small, and there are lots of factors affect the structural damping ratios[[] WANG Suguo, The Effect of Slabs on the Failure Mode of Reinforced Concrete Frame Structures Journal of CiviI，Architectural&Environmental Engineering. 2009(2);V01.31 No.1:66-70. ], such as material damping, the surrounding medium, support style etc.
The vibration properties of the cantilever slab can be changed with slab quality, stiffness, overhang length, and damping etc.
By computing and comparing displacement and vibration frequencies it was found that overhang length and reinforcement diameters had much greater influence on structural properties.
Of course, there are complex factors influencing the displacement and vibration frequencies of the cantilever slabs, for examples, overhang length, reinforcing, elastic modulus, damping and mass, etc. 4.

However, because of the complexity and particularity in bridge structure, monitoring variables are greatly influenced by environmental factors, which results in more difficulties in evaluation.
The main reason is that the dynamic parameters of a real bridge are affected greatly by the uncertainty of the non-structural factors and boundary condition, especially the interference of the environment.
The temperature difference between members is mainly caused by the difference of material thermal properties and geometry shape.
The temperature change affects elastic modulus, E, of concrete.
The temperature change affects boundary condition of structure.