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Materials Smart Materials.
SMPs are the most common material used to fabricate 4D printed materials due to the wide spectra of materials under it.
The International Journal of Advanced Manufacturing Technology; 2019;105:701–17
Self-healing Materials. 2010;5424–30
Science (80- ). 2019;366:105–9

Piston Contact Stress Analysis and Simulation JIANG Fan1, a 1Zhejiang tongji vocational college of science and technology, Hangzhou 311231, China afanfan_0099@163.com Keywords: Assembly interference, Contact stress, Simulation analysis.
Simulation results indicate that contact surface average Mises stress of valve seat was about equal to yield strength of materials with interference in 0.01mm; while in conditions of interference in 0.02mm and 0.03mm; radial deformation of valve seat was obvious.
Based on analysis and considering mechanical properties of materials, unilateral interference between piston and seat would not exceed 0.01mm; when friction coefficient was defined as 0.05 and unilateral interference was set as 0.01mm, output stress would be 892.14N, which far less than hydraulic pressure arising from pull-out stress who would only be 300N.
Zhou: Journal of the China Railway Society Vol.31 (2009), p.31 [4] Y.B.Xia, C.M.
Lu: Journal of Southwest Petroleum Institute Vol.26 (2004), p.71 [5] Z.P.Guo, G.F.

Many semiconductors have been studied, but only a very few large band gap materials can generate enough photo-voltage to cleave water for a single photoelectrode PEC water splitting cell especially processing under solar illumination.
Materials and Methods A desired dimension (50 mm x 10 mm) of titanium foils with thickness of 0.127 mm from STREM Chemicals Company were placed in ethylene glycol electrolyte with 5 wt% ammonium fluoride (NH4F) and 5 wt% hydrogen peroxide (H2O2) for 1 hour at 60 V.
Sreekantan, Study of WO3 incorporated C-TiO2 nanotubes for efficient visible light driven water splitting performance, Journal of alloys and compounds 547 (2013) 43-50
Sajjad, Development of modified N doped TiO2 photocatalyst with metals, nonmetals and metal oxides, Energy & Environmental Science 3 (2010) 715-726
Sreekantan, Heat treatment effects of WO3-loaded TiO2 nanotubes with enhanced water splitting hydrogen generation, Materials Science in Semiconductor Processing 16 (2013) 947-954

Due to the shape complexity and the load applied to the composite, the preform consisted of two or more joint regions for the various materials and layers of fabric that degraded the flow front progression and its permeability.
In general, the mechanical qualities of RTMCs are depending on many parameters such as materials, preform architectures and loading conditions, further research is necessary.
Sun: Composites Science and Technology Vol. 59 (1999), p. 405 [5] D.A.
Takita: International Journal of Fatigue Vol. 30 (2008), p. 1720 [8] A.
Kocsis: Journal of Materials Science Vol. 40 (2005), p. 5609 [13] G.

The Influence of Current Density on Tribological Behavior Ni-Co Electroplated Coatings Mária Hagarová1, a *, Dagmar Jakubéczyová2, b , Pavol Hvizdoš2, c, Zuzana Fečková1, d, Marek Vojtko1, e, Gabriel Dúl1, f 1Technical University of Košice, Faculty of Metallurgy, Park Komenského 11, 042 00 KOŠICE, Slovak Republic 2Institute of Materials Research Slovak Academy of Sciences, Watsonova 47, 040 01 KOŠICE, Slovak Republic a*maria.hagarova@tuke.sk, bdjakubeczyova@umv.saske.sk, cphvizdos@umv.saske.sk, dzuzana.feckova@tuke.sk, emarek.vojtko@tuke.sk, fgabriel.dul@tuke.sk Keywords: Ni-Co coating, electrodeposition, current density, tribology Abstract.
Engineering and Science 1 (2011) 27-32
Smith, Recent developments in the electrodeposition of nickel and some nickel-based alloys, Journal of Applied Electrochemistry, 63 (2006) 957-972
Hagarová, Experimental methods of assessment of PVD coatings properties In: Journal of Metals, Materials and Minerals. 17 (2007) 29-35
Materials Science Forum. 782 (2014) 598- 602

Simultaneously totally demonstrated strategies by utilizing as beginning materials oxalates, carbonates, acetic acid derivations, citrates have the burden of the presence of carbonaceous anions.
Materials and Method Bi-2223 was prepared by thermal treatment method [13].
Figure (1) XRD pattern for Bi-2223 with different sintering temperature One of the most important measurements that indicates superconducting materials is the electrical resistivity measurement, during four probe technique as a device of a cryogenic system of liquid helium was used for this purpose.
Journal of Sol-Gel Science and Technology 77.1 (2016): 100-108
Journal of Superconductivity and Novel Magnetism 28.7 (2015): 1913-1924

It described unitively the nonlinear characteristics of various materials on the plane and the meridian plane through an expression, which contained and approached the existing nonlinear strength theory.
Characteristics and development of Tsinghua Elasto-plastic Model for soil [J]., Chinese Journal of Geotechnica Engineering, 2006, 28(1), In Chinese
Chinese Journal of Geotechnica Engineering, 2006, 28(2)：256-259, In Chinese
Science in China Ser.
E Engineering & Materials Science, 2004, 34(11)：1283-1299, In Chinese

However, the material suffers from low strength and large shrinkage upon dehydration.
Materials and methods Preparation of pure chitosan.
Xu, Preparation and characterization of stable chitosan nanofibrous membrane for lipase immobilization, European Polymer Journal, 43(2007) 3710-3718
Domard, Study of a chitin-based gel as injectable material in periodontal surgery, Biomaterials, 23 (2002) 1295–1302
Cao,Montmorillonite /polypropylene nanocomposites: Mechanical properties, crystallization and rheological behaviors, Applied Clay Science,.52 (2011) 171-178

The Material Parameters of Model.
The refuge chamber will produce plastic deformation in gas explosion shock loading, therefore, elastic-plastic materials selected.
The single cabin, door panels and stiffeners, flange and other materials are made of Q235 steel.
References [1] A.H.Zhao: Journal of North China Institute of Science and Technology Vol. 7 (2010), p. 27 [2] Z.B.Shi: Coal Mine Accident Investigation and Case Analysis (China Coal Industry Publishing House, Beijing 2009)
[3] S.Wang, L.Z.Jin and J.Li: Journal of Safety Science and Technology Vol. 6(2010), p. 119 [4] M.Song and S.R.Ge: Mining & Processing Equipment Vol.41 (2013), p. 97 [5] Z.L.Jing and A.N.Zhang: Coal Mine Machinery Vol. 34(2013), p. 103 [6] X.T.Fan: Mining Safety & Environmental Protection Vol. 37(2010), p. 25 [7] H.F.Fang, L.H.Cai, R.Y.Hu and Q.H.Chen: Safety in Coal Mines Vol. 43(2012), p. 167

Thus, studies on the size and shape-control synthesis of magnetic materials are of great interest and are actively being pursued [6–9].
Chen: Materials Characterization Vol. 61 (2010), p. 489 [10] J.
Qian: Journal of Crystal Growth Vol. 276 (2005), p. 571 [11] L.
Wang: Journal of Alloys and Compounds Vol. 472 (2009), p. 271 [12] Z.
Stucky: Science Vol. 279 (1998), p. 548 [17] T.