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The heat conduction equation: (1) Where: ρ-material density (kg/m3); Cp-specific heat (J/kg•℃); k-thermal conductivity (W/m•℃) and Q-internal heat generation due to the phase change.
Acknowledgements This work was financially supported by the National Science Foundation (51374069，51174249).
References [1]Alzetta F, Toschi F: Iron and Steel Vol. 40(2005), p. 80 [2] Guangzheng Luo, Xin Liu, Jinlong Fan and Xianghua Liu: Journal of Iron and Steel Research Vol. 26(2014), p.13 [3] Timmel K, Miao X, Wondrak T, Stefani F, Lucas D, Eckert S: Eur.

The steady and unsteady seepage of the saturated and unsaturated soil is mainly based on the Van Genuchten material model [1].
M．Th．(1980)，A closed form equation for predicting the hydraulic function of unsaturated soils，Journal Soil Science Society of America, 44

However, if critical temperature is exceeded when machining a component, materials with no strain hardening gain advantage in strength, ductile and elastic properties.
Without accounting for surface temperature and temperature gradients influencing mechanical characteristics of machined materials, calculation errors will worsen.
Increase of heat buildup in the contact zone of tool surfaces and machined materials leads to mechanical property change in the contacting pair, for example, to decrease of hardness of the machined material.
New York: Springer Science+Business Media, LLC, 2007
Journal of Friction and Wear. 35 No. 5 (2014) 389-395.

Quality control of materials, masonry units and mortar that are used to build the modern masonry buildings, is performed rarely in the practices.
Data on the mechanical properties of masonry walls from the materials used in Montenegro are scarce.
Testing the characteristics of materials Material testing consists of testing components of mortar, mechanical characteristics of mortar and masonry units.
Stress-Strain Characteristics of Clay Brick Masonry under Uniaxial Compression (2007) Journal of materials in civil engineering, pp. 326-388
Influence of the geometrical values of hollowness on the physicotechnical characteristics of the concrete vibropressed wall stones (2014) Applied Mechanics and Materials, 584-586, pp. 1381-1387

Material model.
[4] Yanxiong Liu and Lin Hua: Journal of Power Sources 195 (2010), p. 3529
[5] Lijun Yang, Haijun Wei, Lei Zhu, Xuyu Jian, Zhong Wang and Lijun Jiang: Metatlic Functionsl Materials, Vol. l6 (2009), p. 50-51
[7] Junbom Kim, Youngmo GOO and eungeul Yoo: Mechanic Development and New Materials (2005), p. 462
[8] Xianglan Shi, Hongjun Ni and Mingyu Huang: New Chemical Materials, Vol. 36 (2008), p.10~11

It works as the second separation section to the materials from the web and place tubers in strips behind the digger.
Vibrating screen is normally the last working part of the digger, which processes the exhuming materials[6].
Dynamic parameters of screen are related to movement state of materials.
——the friction angle between materials and screen face, （°）.
Journal of Hunan University (Natural Sciences), vol26, no 5, pp39-42,1999.

Irving, Welding Journal, 72 (1994) 47-50
Deb Roy, International Materials Review, 44 (1999) 238-266
Dausinger, ICALEO'92- Laser materials processing, (1993) 523-528
Zuo, Laser materials processing of high strength aluminum alloy.
Wang, Physical properties of metal materials handbook, Metallurgical industry press, Beijing, 1993.

This is an electro active material whose electrical resistance changes with deformation.
These properties make this material suitable to develop force or deformation sensors [15,16].
The second is to change the gripper material, e.g. use stiffer silicone rubber, but it has to be carefully performed since too stiff a material leads away from a compliant mechanism with distributed compliance.
-J., Kota, S, An effective method of synthesizing compliant adaptive structures using load path representation, J. of Intelligent Material Syst.
And Materials. 4693, 2002, 161-172 [10] Lu, K.

Materials and Methods Materials.
The base material used to make the electrospun fibers is PVA, with a hydrolysis percentage of 87%.
DSC measurements can provide us with very relevant data on the thermal behavior and phase transitions that exist within materials.
Chitosan as a starting material for wound healing applications.
Journal of Biomedical Materials Research. 2015 ;103 (Pt A):3081-3093

WPC is used in the building materials [4,5], auto industry [6], furniture [7], logistics [8], packaging [9] and other industries with growing markets [3, 10, 11].
It is very necessary to consider many process parameters (thermal regulation, material flow rate, screw rotation speed etc.) which directly impact the material (temperature or flow rate changes, mechanical behavior evolution) [13].
The numerical simulation technique allows analyzing the material behavior inside the extruder.
Ghoreishy, Quasi-steady State Finite Element Modelling of Polymer Melt Flow in an Intermeshing Co-rotating Twin Screw Extruder, Iranian Polymer Journal 19 (2), 2010, pp.143-154
Potente, Screw Extrusion: Science and Technology, Hanser Verlag, Munich, 2003, pp. 67-77