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The modulus of elasticity strongly depends on the the environmental factors, and as the modulus changes, resulting in the change of pavement susceptibility to mechanical characteristics [1].
Therefore, assuming a changeless surface layer’s modulus as the depth increases may be misleading during the traditional design or analysis of the mechanical properties of asphalt concrete pavements [4].
In order to know about the influence of surface layer's modulus changed as non-uniformity gradient on the mechanical characteristics of asphalt concrete pavements, this paper assumed the different changes on the modulus of surface layer with different gradient and then researches the mechanical properties of asphalt concrete pavements by using the finite-element method.
Stress intensity factors variations with different modulus of surface layer are shown in Fig. 4 and Fig. 5.
Fig. 4 variation of the stress intensity factor KⅠ with modulus of surface layer Fig. 5 variation of the stress intensity factor KⅡ with modulus of surface layer Conclusions This paper assumes the different changes on the modulus of surface layer with non-uniformity gradient, and then researches the mechanical properties of asphalt concrete pavements with different modulus of surface layer by using the finite-element method.

Influence of Anisotropic Properties upon Stress Intensity Factors under Biaxial Stress Akira Shimamoto1, a, Hiroshi Ohkawara1, a and Jeonghwan Nam 2, b 1 Saitama Institute of Technology, 1690, Fusaiji, Fukaya, Saitama 369-0293, Japan 2 Hi-tech Mechanical Design Research Center, Yeungnam University, Kyoungbuk, Korea a shimamot@sit.ac.jp, bnam@jj.ac.kr Keywords: Anisotropy, Stress Intensity Factor, Experimental Stress Analysis, Fracture Mechanics, Biaxiality Ratios Abstract.
In this study, stress intensity factors were investigated and determined by photoelastic and caustics methods to clarify the mechanical behavior of crack tips under various biaxiality ratios.
Caluculation of stress intensity factors Photoelasticity.
Conclusions The stress intensity factors KI, KII, of PC band plates with isotropic and anisotropic properties were determined by photoelastic and caustics methods under biaxial stress conditions.
When the notch angle θ is 0ﾟ under biaxial load conditions, there is no influence from either isotropic or anisotropic properties, only KI is affected. 2.

Characteristics such as low density and abrasiveness, superior mechanical properties and low cost are the most sought in these composites.
Characteristics such as low density and abrasiveness, superior mechanical properties and low cost are the most sought ones in these composites [1].
The humidity contents of the fibers can cause variations in properties of composites, especially mechanical properties, leading to degradation and failure.
Other factors associated with the chemical treatment are the exposure time of the fibers at alkaline conditions, the concentration of the solution and the temperature.
Mechanical properties of composites: (a) Young’s modulus e (b) tensile strength.

Results showed that when the manufacturing parameters are: time of 47min, pressure of 19MPa and temperature of 156°C, the composites have higher mechanical properties.
The mechanical properties increase with increasing of pressure.
The composites have largest difference between the maximum and minimum of mechanical properties under time and pressure, so time and pressure are main factors affecting mechanical properties of composites.
The mechanical properties increased with increasing of pressure
J. ,56:90–96(2006b) [6] Alemdar, A., Sain, M., Biocomposites from wheat straw nanofibers:morphology, thermal and mechanical properties,Compos.

Nevertheless, composite material properties depend on many factors such as fiber direction, length of fiber, matrix material and manufacturing process.
Introduction Mechanical properties can be improved by the combination of material, i.e. so-called composite materials.
For fiber-reinforced composite, the mechanical properties depend on many factors including properties of raw materials, volume fraction, length and orientation of fiber.
The work aims to study the effect of carbon fiber length and orientation on material mechanical properties.
Lin, Fabrication and Mechanical Properties of MWNTs/ Phenolic Nanocomposite, 2006

Main affect factors of curriculum teaching system are teaching rhythm ratio and learning damping of students.
However, the lacks of appropriate methods research the relationship between two main factors and expressed characteristics of curriculum teaching system.
Start with course assessment grade which is expressed characteristics of curriculum teaching system, using simulation method, this paper researches statistical characteristic of two main factors in curriculum teaching system, and reveals inner relation existed in factors.
In order to make statistical property trend, class size is 100 students.。
Summary (1) In curriculum teaching system, assessment grade, learning damping and teaching rhythm all submit to normal distribution approximately, which gives a well theory foundation to research muilt factors affect and interactions in curriculum teaching system

The ability of the inclusions to promote the acicular ferrite formation depends on various factors such as chemical composition, morphology and size of the inclusions.
Various factors such as the chemical composition, prior austenite grain size, cooling rate and different types of non-metallic inclusions affect the formation of AF [23–26].
Graphical presentations of the simulated HAZ thermal cycles as well as the microstructures and mechanical properties of the simulated HAZs are reported in our previous paper [17].
Afkhami et al., “Thermomechanical simulation of the heat-affected zones in welded ultra-high strength steels: Microstructure and mechanical properties,” Mater Des, vol. 213, p. 110336, Jan. 2022, doi: 10.1016/j.matdes.2021.110336
Shi et al., “Effect of nitrogen on the microstructures and mechanical properties in simulated CGHAZ of vanadium microalloyed steel varied with different heat inputs,” Materials Science and Engineering: A, vol. 649, pp. 270–281, Jan. 2016, doi: 10.1016/j.msea.2015.09.056

A set of various factors and phenomena defines the quality of welded joints.
It testifies to a better quality of shielding and smaller probable changes in symmetry of structure formation and mechanical properties of the heat affected zone.
A set of various factors and phenomena defines the quality of welded joints.
This fact asserts better quality of shielding and the lowest possible change in the symmetry of structure formation and mechanical properties of heat affected zone.
It testifies to a better quality of shielding and smaller probable changes in symmetry of structure formation and mechanical properties of the heat affected zone.

The mechanical property tests showed that it has good mechanical properties, tensile strength is up to 46.5MPa and the loss amounts of the hydrolytic degradation after 80 days is 42%.
It is considered to be one of the most valuable synthetic polymer materials as its excellent mechanical properties, biocompatibility and antithrombogenicity[1].
Fig. 3 Weight loss of PU during degradation（degradation condition: 37℃, pH=7.0） 2.2 Effects of various factors on waterborne polyurethane We should control the amount of raw materials, reaction time, temperature and other factors strictly in the preparation of waterborne polyurethane, in order to make the product with excellent adhesion and stability, thus giving comprehensive properties of the final product. 2.2.1 Effect of R value R value referred to the molar ratio of the isocyanate and polyester diol and the hydroxyl of 1,4-butanediol.
The changes of R value directly affect the stability of emulsion and coating mechanical properties of the membrane, as shown in Table 1 and Fig.4.
Select the degradable biocompatible materials as raw materials, avoiding yellow color during storage and the carcinogenic aniline produced in the use, the waterborne polyurethane products prepared expressed good mechanical properties, biodegradation and other excellent properties, which can be widely applied in medical polymer materials.

The influences of sintering conditions on microstructure and mechanical properties were studied.
Because of the similar green porosity of the three samples, the linear shrinkage and weight loss are two main factors determining the porosity of the sintered samples.
The interlocking microstructure is in favor of enhancing the mechanical properties.
Such microstructure is detrimental to the mechanical properties.
The morphologies of the sintered samples determine the mechanical properties.