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Paleosol is an important factor affecting the stability of loess slope, and its mechanical properties, deformation and failure mechanism are still under in-depth exploration and research.
Introduction Loess slope with complex structure, old and new loess have varies engineering properties.
Quantitative Analysis on stress relaxation phenomenon of Malan loess by using factors of stress relaxation(I=(σmax-σmin)/σmax).
Seismic damage assessment and seismic subsidence of loess with Different properties.
[7] GB/T50269-97,Code for Measurement Method of Dynamic Properties of Subsoil[S].in Chinese

This phenomenon will affect bend angle and bend curvature, and can be influenced by various factors.
The amount of spring-back/spring-go is influenced by various process parameters, such as clearance between die and punch, tool shape and dimension, contact friction condition, punch and die radiuses, material properties, sheet anisotropy, and sheet thickness.
Li X. and his colleges [3] showed that the accuracy of spring-back simulation is directly affected by the material-hardening model.
Table 1 shows the properties of the used Ck 45 sheet.
The plastic properties of rolled sheet differ from the thickness direction, normal anisotropy, and also vary with orientation in the sheet plane.

The bond interface wave and mechanical properties are analyzed.
Some factors affecting the quality of welding and the corresponding solutions are waiting for a further study.
The size and mechanical properties of two tubes are shown in Table1.
The mechanical properties of the test results show that the binding interface bond properties and mechanical properties of Al/Ti composite tube, in accordance with the determined process of the explosive welding, fully meet the requirements of engineering.
Pavliukova, Structural and mechanical properties of metallic-intermetallic laminate composites produced by explosive welding and annealing, Mater.

The ultrasonic transmission at the contact interface is vulnerably affected by preload force factors and so on by the vibration experiments of the ultrasonic vibration cutting system.
In the end, the mechanical vibrations are passed to the horn and the longitudinal ultrasonic vibrations are generated by the horn, which the 600 chutes are opened at its front end.
Due to the inconsistencies of the material properties at the contact interface, the discontinuities of the ultrasonic wave at the interface appear.
The small changes of the preload at the contact interface will lead to the unstable output of the ultrasonic energy and impact on the ultrasonic vibration, thereby affects the effect of the vibration cutting.
Seen from the Fig.8 and Fig.9, the longitudinal amplitude of the output is 17.4um and the bending amplitude is 4.2um.The gap is obvious to the theoretical output value and the reason is influenced by the degree of connection interface bonding of the transducer or the horn, preload and the chute in horn.[1] Fig.8 The test result of the vertical amplitude Fig.9 The test result of the bending amplitude Conclusions The physical properties of materials influence the propagation of ultrasonic waves in the material.

Physical-Chemical Properties of Molybdenum Films Prepared with Magnetron Sputtering N.A.
The causes that lower protective properties of the coating and lead to the penetration of HF solution can be divided into the following groups: 1) External factors (quality of the preparation and substrate roughness); 2) Physical and mechanical parameters of the film (especially the structure and thickness of the coating, mechanical stress).
Protective coating properties also depend on its structure.
The question of the coating thickness influence on its protective properties requires more detailed studies.
The data indicate the existence of additional factors, which lead to pinhole formation on the glass surface.

Influences of Tool Pin Profile on Microstructure and Mechanical Properties of Al/Cu Composites Fabricated Via Friction Stir Processing Amir Mostafapour1, a, Saeed Mahmoodi Darani1, b, Mohamad Kazem Besharati Givi2, c and Arash Aghagol2, d 1Mechanical Engineering Department, University of Tabriz, Tabriz, Iran 2Mechanical Engineering Department, College of engineering, University of Tehran, Tehran, Iran aa-mostafapur@tabrizu.ac.ir, bmahmodidarani@gmail.com, cbgivi@ut.ac.ir, da.aghagol@ut.ac.ir Keywords: Friction Stir Processing, Al/Cu Composite, Microstructure, Tensile Properties, Microhardness Abstract.
Longitudinal specimens in the direction of FSP lines were cut as per the ASTM E8M to investigate tensile properties of metal matrix composites and were compared to tensile properties of the base metal.
Tensile properties.
Good dispersion of the Cu particles and finer grains in the samples produced by the SQ tool are the factors that increase the strength of these composites.
Application of further FSP passes on the samples eliminates the clustered Cu particles and creates a more homogenous microstructure with finer grains that these advantages improve the mechanical properties of the composites.

WPC siding would cause aging problems in alternating light and rain environment, which could cause some defects:fading, mechanical properties reducing, and affect appearance and durability finally[4].
In addition, water can aggravate surface fading of WPCs, so fading is caused by different environmental factors.
The effect of UV light and xenon lamp accelerated aging on mechanical properties of recycled milk-cartons/PE composite siding.
There are different study conclusions of the effect of UV light accelerated aging on mechanical properties of WPCs, Lundin [11]pointed out mechanical properties of WPC decreased most in the initial 1000h, while Starket al. thought mechanical properties reduced obviously in the later 1000h.
Effect of accelerated weathering on the physical and mechanical properties of natural-fiber.

The properties of porous silicon carbide composite are studied, such as surface HV and corrosion resistance, and the influence of the pore agent content to mechanical properties.
Besides, the chemistry stability and mechanical properties of the composite are the important performances.
Hardness is a main parameter of mechanical properties of material.
With the pore agent content increasing, the porosity of composite also increases, but mechanical properties of material inevitably reduce.
The mechanical properties of composite pore agent content [%] 10 12.5 15 bending strength [MPa] 98.4 99.3 95.1 compressive strength [MPa] 93.4 94.5 89.6 We determined that the range of pore agent content is 10~15%, and tested the mechanical properties of composite when the pore agent content respectively is 10%, 2.5% and 15%, they are shown in table 1.

Fig. 3 Failure probability change for distribution parameters of mechanical properties (a) Yield strength (b) Fracture toughness.
The sensitivity factors of fracture toughness are very small.
Fig. 6 shows the influence of mechanical properties distributions on failure probability.
The weibull distribution of both yield strength and fracture toughness has the lowest Pf values when the mean value of mechanical properties is low.
Fig. 6 Failure probability change for different distributions of mechanical properties (a) Yield strength (b) Fracture toughness.

Properties of composite were measured using hardness and density test.
Kord B. had mentioned increase amount of maleic anhydride will increase the mechanical properties of composite from his experiment involving tensile, flexural and impact test[8].
Coverage of polypropylene is affecting the result of density test where if polypropylene can cover fibre in larger area then water will less contact with fibre.
Hardness of composite is affected by two main factors, namely: adding of maleic anhydride and compact level inside composite due to fibre composition.
Combining both factors, author will select sample with lower density and higher hardness value.