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It is a key to chose the interphase materials to improve the oxidation resistance and mechanical properties of SiC/SiC composites[6].
The sintered samples mechanical property was evaluated by three-point bending at room temperature.
The relationship between porosity and flextural strength was strongly affected by the structure factor of the materials and porosity[12], therefore it is need to modify the pore distribution and morphology.
The good bonding between YAG and SiC benifit to mechanical properties of bending strength.
Cellular ceramics: intriguing structures, novel properties, and innovative applications.

Introduction Laminated composites possess superior mechanical properties, such as high specific strength and stiffness, corrosion resistance, and better fatigue properties in comparison with metallic solutions, which makes them good candidates for long-term structural applications [1].
The current method is to take photographs of the crack propagation processing continuously, then use the artificial method to measure the crack extension length, which is influenced by human factors, and has low precision, low efficiency.
The global threshold is simple, without affecting the image brightness and contrast characteristics [13].
From Fig. 3, it can be seen that the image has some defects, and some places are less connected, which will affect the following operation.
Minak, An integrated approach based on acoustic emission and mechanical information to evaluate the delamination fracture toughness at mode I in composite laminate, Mater.

The meaning of classification into families is since members of one family have certain common properties: similar properties, methods of processing, and often, very similar application [1,2].
What turned out to be exceptional about the resulting fibers were their mechanical properties.
Limiting factors for the wider application of polymers and fiber-reinforced polymers (FRPs) are relatively poor performance under impact loads due to their lack of plastic deformation.
Polymers present a particular challenge for shaping their properties because their properties make them that way.
However, polymers that can be easily and selectively depolymerized into monomers usually require low-temperature polymerization methods and have poor physical properties and mechanical strength for practical use [20].

Research on Advance Control of Chaotic Vibration Machine with High Vibration Intensity (Ⅰ ) ----- Mechanical Properties and PLC Control Decision Xiaolan Yang1, 2 a, Jifeng Liu1, 2，Hansong Yang2, Bingzhi Kong1, Jiawei Li1 and Mengnan Si1 1Nanjing Institute of Technology, Nanjing, Jiangsu, 211167, China 2College of Engineering，Huanghe S & T University, Zhenzhou 450015 ayxhh001@163.com Keywords: High vibration intensity, Chaotic vibration, Vibration machine, Advance control, Intelligent frequency conversion Abstract.
Analysis of Mechanical Properties and Control Ideas Analysis of Mechanical Characteristics.
According to equation (2), we can know the complex motion of such a mill system, due to the system is affected of the frequency conversion, collision, impact and vibration, the state of strong nonlinear vibration or chaotic vibration with certain excitation and uncertain response are appeared usually.
through the advance control software, control signals are transferred to the inverter by PLC, the frequency conversion control of the vibration mill can be achieved, on the other hand, PLC continues to receive the detection signals from the sensor transfer, and through its integral amplifier and calculator, parameters such as vibration intensity are transmitted to the advance control software; Selected inverter has a built-in PID controller, its function parameter set can define upper and lower limits of external input signals; As the frequency setting signals, the inverter allows the analog voltage or analog current input signal, and use the differences between the target signal and the feedback signal to adjust the output frequency, in this way, not only regulation accuracy can be contented but also the output frequency can be adjusted with a certain sensitivity; the output voltage of controller can be expressed as: Where, : input deviation, : given value, : measured value, :scale factor
References [1] Jifeng Liu, Xiaolan Yang, Jinchao Zou: Journal of mechanical engineering, Vol.44 (2008), p190

Finally the forged product is then heat-treated to improve the mechanical properties.
The finished products have the following mechanical properties: Rp0,2 > 300 MPa, Rm > 340 MPa, A5 > 10 %.
The type of the material, the state of its microstructure, its casting and forging properties are defining factors.
Increasing the silicon surplus alters the mechanical properties; especially the elongation can be negatively affected.
Afterwards the microstructure and the mechanical properties of the cast-forged material were analyzed.

When the concentration is exceeded, restructuring processes take place in the cement system, leading to deterioration of the properties of the composite binder.
By controlling the composition, concentration, fineness and other parameters of the cement composite, one can achieve high performance properties of the final product.
Kharchenko, Structure and properties of soil concrete masses based on nano-modified microcements, Housing construction. 9 (2016) 55-58
Kastyurina Study of the effect of chemical additives on the properties of cement systems, Vestnik of Polotsk State University.
Jasko, Effect of plasticizers on the properties of cement with the addition of calcium sulfoaluminate, Technique and technology of silicates. 22 (2) (2015) 25-28

In particular, external factors such as pH, temperature, electric and magnetic fields, light, and the concentration of biomolecules can be used to induce the release of biologically active substances and drugs from biomaterials such as smart hydrogels [3].
As a result, the mechanical properties of such smart hydrogels have been improved, and the drug release profile of them has become more stable.
Cross-linking of hydrosols (liquid polymers) converts them into hydrogels with improved physical and chemical properties, including water-holding capacity, hardness and structural integrity, which affects their cytocompatibility as well as biochemical properties [11].
In addition, in our previous work, it was proved that humic substances, due to their ability to cross-link some polysaccharides and proteins, are materials that improve not only the mechanical properties of polymer hydrogels, but also directly affect such smart properties as transdermal ability [15, 16].
Mooney, Alginate: Properties and biomedical applications. 

Introduction The need for construction materials that possess improved fire-resisting properties led professor Joseph Davidovits to the synthesis of new materials which he named geopolymers [1].
These materials have excellent mechanical properties and high resistance to thermal and chemical attack while their synthesis is based on the activation of aluminosilicate materials by an alkali metal hydroxide and an alkali metal salt and their transformation into a three-dimensional inorganic amorphous structure [2].
There is a number of factors that are reported to affect geopolymerisation.
First of all, the SiO2/Al2O3 molar ratio of starting materials is crucial since it causes significant structural differences which determine the final properties of geopolymers.
Probably, when the solution comes close to be saturated in Si, the dissolution reaction of the slag shifts to the left, leaving unreacted material and affecting the microstructure of the geopolymer.

The chemical composition and mechanical properties of materials are shown in Table 1 and Table 2.
Mechanical Properties of Materials Specimen Code Tensile Strength (MPa) Yield Strength (MPa) A 353 255 C 696 470 Experimental Procedure.
Especially for specimen code A having a thickness of 0.6 mm and mechanical properties of tensile strength 353 MPa, the destruction took place not only on the edge of the square tubes where crush initiators were located and the initial crush occurred, but also on the other edge of the square tube, where a little damage was detected.
For specimen code C having thickness 1 mm and mechanical properties of tensile strength 696 MPa, the destruction occurred only on the edge of the square tube, where crush initiators were located and the first crush occurred.
The crush initiators position on thin-walled square tubes affects IEA performance.

Yet, the major drawbacks in using magnesium alloys are the limited mechanical properties (strength, hardness, corrosion resistance) especially at high temperatures [2].
Precipitation hardening usually improves the magnesium alloy mechanical properties resulting in a severe reduction of the corrosion resistance [2,3].
Rare earth (RE) elements are known to improve the mechanical properties and corrosion resistance of magnesium alloys [4-18].
Stress-strain curve is clearly affected by work hardening (Fig. 2(a)).
The stoichiometry factors x and y can be respectively 0.66 and 0.33, as reported by Apps et al. in [10] for a Y- Nd-containing magnesium alloy, using quantitative dispersive energy spectroscopy.