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The PBF-LB process reduces material wastage as the un-melted powder can be recycled for a later build.
Furthermore, PBF-LB gives the flexibility of combining various materials like glass, metals, and alloys [2].
Cunningham, "Detecting voids in 3d printing using melt pool time series data," Journal of Intelligent Manufacturing, 2020
Choudhary, "Perspective: Materials informatics and big data: Realization of the "fourth paradigm" of science in materials science," APL Materials, vol. 4, no. 5, p. 53208, 2016
Ramprasad, "Accelerating materials property predictions using machine learning," Scientific Reports, vol. 3, no. 1, 2013

At present, the materials were mainly focused on semiconductor materials, polymer materials and metal materials.
But these researches were relatively less for metal materials, especially for stainless steel materials.
Before laser processing, the materials should respectively be polished on different SiC papers (800,1200) to eliminate the scratches on the materials’ surface.
Advanced materials, 14(24): 1857-1860(2002)
The Journal of Physical Chemistry , 53(9): 1466-1467(1949)

Preparation of Aluminum-magnesium Alloys from Magnesium Oxide by Molten Salt Electrolysis Method Fengli YANG1,a, Shaohua YANG1,2,b , Zhaowen WANG 2,c , Zhongning SHI2,d, Bingliang GAO 2,e 1 School of Materials and Chemistry, Jiangxi University of Science and Technology 2 School of Materials and Metallurgy117# , Northeastern University a sophieyfl@163.com;b xizi527@163.com;c zwwang@sohu.com; d znshi@163.com;e:blgao@163.com Key word: Magnesium Oxide, Preparation, Alloy, Molten Salt Abstract.
The component of electrolyte should be higher than that of decomposed materials.
Warrendale: Minerals, Metals & Materials Soc, (1991), p.349-355
Warrendale: Minerals, Metals & Materials Soc, (2007), p.283~ 286
Preparation of aluminum- magnesium alloys starting from magnesium oxide[J].Journal of Northeastern University: Natural Science, 28(6), (2007), p.839-842

Acknowledgment The projects are supported by the natural science foundation of shaanxi province (No.2010JM6012) and China postdoctor (No. 20100471835).
Hua: Some recent investigations and new progresses in the application of boundary element methods, Journal of Tsinghua University, Vol.41(4/5) (2001), p. 89-93 [5] G.P.
Shi: Predicting dynamic behaviors of a whole machine tool structure based on computer-aided engineering, International Journal of Machine Tools and Manufacture, Vol.43 (2003), p. 699-706 [6] Y.W.
Zhang: Research on dynamic characteristics of assembled thin plates structure by BEM, Key Engineering Materials, Vol. 297-300 (2005), p. 2368-2374

Generally there are A, C stages for Brittle materials and A, B stages for salt layers, in which stage B is last for a longer time.
SPE11374, 1983 [3] Yang Chunhe, Daemen J J K, Yin J1altHua: International Journal of Rock Mechanics and Mining Science, 1999, 36 (2):233-242 [4] TANG Jiping, Wang Shuqi, Chen Mian, The drilling theory and practice in salt rock stratum [M].
(In Chinese) [5] Lou Yishan, Li Zhonghui, Zhang Chunyang et., Chinese Journal of Rock Mechanics and Engineering, 2008, 27 (S2): 3570-3574.

In fact, the RCC can be looked as a composite material.
The shape function, the relation of stress and strain and the methodologies of calculating interlaminar Shear Stress have been proposed. 3-D composite layered elemen Fig.1. 8 node composite layered element It assumes that all material orientations are parallel to the reference plane (Figure.1), further, any warped layers act as if they are flat and parallel to the reference plane.
Acknowledgements This work was financially supported by the ShanDong Science Programe (2010GFS10607).
L., A Non-Conforming Element for Stress Analysis, International Journal for Numerical Methods in Engineering, 1976(10): 1211-1219
Journal of DaLian university, 1996(6): 301-306.

Influence of Cellulase to Filtration and Fiber Morphology of Bleached Softwood Pulp Min Du 1, a, Xinping Li 1, b, Meng Luo2, c 1School of Papermaking Engineering, Shaanxi University of Science and Technology, Xi’an, 710021, China 2Shanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, Xi’an, 710021, China amiziimi@163.com, blixp@sust.edu.cn, c851086773@qq.com Keywords: cellulase, bleached softwood pulp, filtration, fiber morphology Abstract: Cellulase named as Celluclast 1.5L was used to deal with bleached softwood pulp.
Experimental Materials.
Vol. 20(2001), p.53 [5] Bajpai P., Mishra S.P., Mishra OM P. et al: Tappi Journal.
C., Amaral M.E., et al: Biochemical Engineering Journal.

The devices are made from various materials such as concrete, rubber or plastic, metal and asphalt.
Singh: Sustainable solar-wind hybrid powerplant for implementation in Malaysia, Journal of Applied Science, vol. 11, No 7, 2011, pp 1121 1128 [5] J.M Davila-Vikhis and R.S Mishra, Performance of hydro kinetic energy system using an axial-flux permanent magnet generator, Energy 65 (2014) pp 631-638 [6] K.M.Saqr and Md Musa: A prespective of the Malaysia highway Energy consumption and future power supply, Energy policy, Vol 39, No 6, 2011, pp 3873 3877 [7] K.
International Journal of Scientific & Engineering Research, Volume 4, Issue 6, June-2013

Model tests According to the flow speed, flow direction and the water level materials that have been measured in the engineering river section and the geographic area in August in the year 2008, the model is being testified.
The space buoy is a common element in science fiction that refers to a stationary object in outer space that provides navigation data or warnings about that particular area.
JOURNAL OF WATERWAY AND HARBOR .2005,(9)154－158
JOURNAL OF WATERWAY AND HARBOR. 2002,(9):111－115.

In both cases, the cracks continue to propagate in this region before either detaching lumps of surface material, or changing direction to cause catastrophic failure [1].
For example in gears and bearings the cracks brunch up towards the free surface, so that a piece of material is removed leaving a pit on the surface.
Hearle and Johnson: Mode II stress intensities for a crack parallel to the surface of an iiiiiiElastic Half-space subjected to a moving point load, journal of the mechanics and physics,Vol.
Barber: Short sub-surface cracks under conditions of slip and stick caused by a moving compressive load, ASME Journal of Applied Mechanics, Vol. 52 (1985), p. 811
Panasyuk: Pitting of the rolling bodies contact surface, Karpenko iiiiiiPhysico-Mechanical Institute, National Academy of Sciences of Ukraine, 5 Naukova St., 79601 iiiiiiLviv, Ukraine, Wear 251 (2001), p. 1347.