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The procedures concerned the assessment of resistance to mechanical (impact and cut) and thermal (flame) factors.
Mechanical properties.
Fig. 1 SEM images of tested composites Mechanical properties.
Cabulis, Experimental Investigation of the Mechanical Properties and Fire Behavior of Epoxy Composites Reinforced by Fabrics and Powder Fillers, Processes 9 (2021) 738
Boczkowska, The Effect of Manufacture Process on Mechanical Properties and Burning Behavior of Epoxy-Based Hybrid Composites, Materials 15 (2022) 301

Gray haze, photochemical smog, acid rain and so on compound pollution problem increasingly prominent, especially the atmospheric pollution of fine particles (PM2.5) has been highlighted as the major environmental problem [1].These endanger human body health and are important pollutants affecting the quality of atmospheric [2,3].
Oscillator relied mainly on analog circuit closed-loop self-excitation oscillator drives, physical properties of the oscillator itself determines the loop resonance frequency, oscillation stability and Q value.
Now TEOM system’s fault is analog circuit closed-loop stability of the oscillator determined by the physical properties, the mechanical structure of the vibrator, and depends on the analog circuit design parameters and external disturbance to the circuit.These factors increased the oscillation system achieving stability the difficulties.
dM in the formula (2) is quality variation of the self-excited frequency with oscillation system changing from f0 to f1.K0 is the elastic constants ofcomposite oscillator and is determined by elastic coefficient,geometry and weight distribution and other factors of the oscillation component material.
The current amplitude was proportional to mechanical vibration amplitude.

There might be the dual effect of the segregation on structures and property of the composites.
But the solidification, as common alloy is affected by selecting crystallization and crystallizing rate larger than solute diffusing rate, the solute segregation cannot avoid forming in the metal matrix, and affects the solidifying structures finally.
The segregation causes the non- uniform distribution of local composition in the composite, so that affects properties of material; on the other hand, solute segregation, especially active elements riching at the fiber/matrix interface and producing suitable chemical reaction, is favourable to improving wetness and combination between the matrix and the ceramic reinforcement.
The interface and segregation phenomenon in alumina short fiber reinforced Al-Cu alloy composites manufactured by squeeze casting are observed and analyzed on metallogrraphic microscope and scanning electron microscope (SEM), and the main affecting factors are discussed in this paper.
The segregation produced in the composite, which causes the composition non-uniformly distributed to result in the difference of structure in the composite even as to affect the using properties of the composite, should try to be lightened or eliminated.

It will not only affect the subsequent production of company’s related products but also does harm to the enterprise image and brings much trouble for the enterprise.
Basic Implications of Virtual Mechanical Manufacturing Technology Confined by a variety of factors, traditional mechanical design technology usually relies on personal experience or habits to conduct mechanical engineering designs on the basis of a series of static hypotheses.
Process model can combine process parameters with design properties of products which can influence the manufacturing functions.
Dynamic Simulation Technology of Mechanical System VPT Dynamic simulation technology of mechanical system, namely the virtual prototyping technology (VPT) in the mechanical engineering design is a digital mechanical design method based on computer simulation model of the product.
On the Application of Virtual Technology in Mechanical Engineering [J].

GFRP bars possess mechanical properties different from steel bars, including high tensile strength combined with low elastic modulus and elastic brittle stress-strain relationship.
Therefore, design procedures should account for these properties.
Properties of Specimen Specimen Index fck [MPa] Beam (L) [m] Section (BxD) [mm] Ls [mm] db [mm] Ls/db ρf [%] ρbal [%] No.
Based on previous study, this study shows distribution of flexural strength affected by length of splice.
After crack, behavior was represented the linear property.

Weld deposition of hardfacing is used for repairing mechanical components in mining, sugar industry and others.
The abrasive resistance of FCAW deposits depends on several factors that strongly influence solidification and the solution of the weld metal such as heat input, the number of layers and the type of shielding gas but it depends mainly on the microstructure which defines their properties [5].
Chromium steel is sensitive to crack in heat affected zone (HAZ).
The preheating of sample have affect hardness value at HAZ regions. 2.
Dilution can affect to microstructure and mechanical properties of hardfacing deposit.

The physicochemical properties of nano-emulsions are interesting for practical applications especially in agriculture because of their small droplet size and long-term stability.
This study provides a strategy to evaluates the effect of environmental factors on the quality of the formulated product, which is utilized for the prediction of its shelf life and determine proper storage conditions.
Increased temperature increases the solubility of Tween 80, making the surfactant more soluble in the oil phase and affecting the spontaneous curvature of the surfactant film.
Conclusion This study provides a strategy to evaluate the effect of environmental factors on the quality of the formulated product, which is used to predict shelf life and determine proper storage conditions.
Aflatoxin B1 and M1: Biological Properties and Their Involvement in Cancer Development, Toxins. 10 (6) (2018) 214

Delamination or interlaminar fracture often occurs in composite laminate due to several factors such as high interlaminar stress, stress concentration, impact stress as well as imperfections in manufacturing processes.
This kind of failure can affect performance of composite materials in their services [3].
Table 1 and 2 describe the laminate mechanical properties and cohesive zone parameters, respectively [10, 11].
Mechanical properties of CFRP HTA/6376C Mechanical Properties Values E11 120000 MPa E22 10500 MPa E33 10500 MPa ν12 0.3 ν13 0.3 ν23 0.51 G12 5250 MPa G13 5250 MPa G23 3480 MPa Table 2.
Parameters of CZM Mechanical Properties Values GIc 0.260 kJ/m2 σmax 30 MPa K 106 N/mm3 In this simulation, element type of SOLID185 is used to model the 3D solid, while INTER205 elements are employed as the interface elements.

The wood milling scheme Rapid wear test method Analysis of the research on parameters affecting the characteristic quantities of wear resistance such as milling cutter tip including Am, r, x, y, … is the cutting length L (Fig. 2).
Location of the inflection point of the tool wear curve depends on many working factors of working factors when milling, mechanical properties of tool milling materials and materials to be machined.
Research on the factors that affect wear during initial running and stable working state is important to improve the quality of machining surfaces as well as to increase tool life and power saving level ...
The mechanical properties of machining tropical woods are for experiment materials - churasia and magnolia: Material Density [kg/m3] Tensile strength sT [MPa] Compressive strength sc [MPa] Flexion strength sF [MPa] Churasia tabularis var attopenesis 600-810 2.8 44.7 118 Magnolia dandyi 450-600 2.6 36.8 86.5 The dependence of linear wear A and the milling tool tip radius r on cutting length L was determined by the rapid wear test.
Therefore, it can be concluded that the wear resistance depends on the mechanical properties and the structure of the wood. 3.

It’s noted that the modulus and stiffness of RAC, even the bond of RAC and rebar are key factors in the future study.
The reason for drop of strength is analyzed from material properties and mechanical change of strength of fire-damaged specimens, and the theoretical prediction is put forward.
In the first phase, the relative deformations grew steadily as the recession of the mechanical properties of materials.
Unlike the experiments under the room temperature, the mechanical properties under room temperature didn’t play the mainly role in the fire.
Then the RAC components presented better performances as it owns better thermal properties. 6.