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Therefore it can be concluded that these materials are also dense.
This method is very usual in ceramic and ceramic based materials [22].
Hofmann, J. of Materials, ID 517904, 1-8 (2013)
Wang, Progress in Materials Science, 57, 487-656 (2012)
Journal of Refractory Metals and Hard Materials, 27 , 521-527 (2009)

These faults will reduce the instability of  loose materials on both sides of the main channel.
Formation mechanism of  material source  One type of the loose materials is the collapse accumulation which can be called as potentially unstable body.
The other one is the loose materials which left in the debris flow gully in history.We call this loose materials as unstable body.
So under the action of heavy rain, surface water, and earthquake, the loose materials stability becomes poor.
Local collapse which can provide materials for debris flow will occur.

Kim2 1 Div. of Material Science Eng.
Acknowledgements The research was performed by the financial of ‘Center for Nanostructured Materials Technology’ under ‘21st Century Frontier R&D Programs’ of the Ministry of Science and Technology, Korea.
Atrens: Corrosion Science vol.39 (1997), p.855 [3] J.
Luan: Journal of Alloys and Compounds vol.336 (2002), p.88 [4] J.H.Perepezko: Mater.
Breslin: Corrosion Science vol.42 (2000), p.27

Effects of Chemical Compositions of Welding Rods on J-R Fracture Resistances and Tensile Properties of Type 347 Welds Ji-Hyun Yoon1,2,a, Bong-Sang Lee1,a and Eui-Pak Yoon2,b 1 Nuclear Materials Division, Korea Atomic Energy Research Institute 150 Deokjin-dong, Yuseong-gu, Daejeon, 305-353, Korea 2 Division of Advanced Materials Science Engineering, Hanyang Univ. 17 Haengdang-dong, Seongdong-gu, Seoul, 133-791, Korea a jhyoon4@kaeri.re.kr, bbongsl@kaeri.re.kr, cepyoon@hanyang.ac.kr Keywords: Type 347, Weld, Austenitic stainless steel, Surge line, Carbon, Nitrogen, Niobium, J-R, Tensile, Nb(C,N) Abstract.
However, there has been relatively little research directed towards the effects of welding materials on mechanical properties of type 347 weld which was deposited by gas tungsten arc welding (GTAW) method [3,4].
Optical micrograph showing typical γ-δ duplex microstructure of type 347 weld Experimental Material.
DeLong: The Welding Journal July (1974), p. 273s
SEM-EDS analysis for ppts providing void initiation sites in SS347W-1 weld. [5] ASTM, E 8: Standard Test Method for Tension Testing of Metallic Materials (ASTM, USA, 2001)

Concrete is a porous material. 
Acknowledgements This work is financially supported by the National Natural Science Foundation of the P.
Construction and Building Materials,1997,11(7): 413
[22] American Society for Testing and Materials.
ACI Materials Journal, 1992，89(1):49-53

Experimental Materials Plain-weave cotton, silk and nylon fabrics with the weights of 120, 95 and 170 g/m2, respectively, were used.
It is derived from natural renewable resource materials such as corn and cassava [7].
Her research interests are in eco-textile fields including bio-based materials, agricultural waste utilization for textiles and dye synthesis for cleaner dyeing technology.
Vol. 33(6) (2004), p. 329 [5] Preferred Fiber & Materials Market Report 2018, in Textile Exchange (2018) [6] R.S.
Na Phatthalung : Applied Mechanics and Materials Vol. 535 (2014), p. 641 [15] J.

Due to their high strength, exceptionally good fracture toughness and wear, corrosion as well as fatigue resistance, maraging steels are considered as important materials for space, military, automobile, tooling and other commercial applications.
Materials Methods Hot rolled conventional maraging steel was obtained from M/s Bharat Aerospace, Mumbai, India.
Jarfors, Taishi Matsushita, Dimitrios Siafakas, Roland Stolt,`On the nature of the anisotropy of Maraging steel (1.2709) in additive manufacturing through powder bed laser-based fusion processing’, Materials & Design, 204, (2021),109608, [2] Branco, Ricardo, José DM Costa, Filippo Berto, Seyed Mohammad Javad Razavi, José A.
Materials Science and Engineering: A 798 (2020): 140130
Thompson, Alaa Elwany, Linkan Bian, `Effects of building orientation and heat treatment on fatigue behavior of selective laser melted 17-4 PH stainless steel`, International Journal of Fatigue,Volume 94, Part 2, (2017), 218-235, [6] Wang, B.; Zhang, P.; Duan, Q.Q.; Zhang, Z.J.; Yang, H.J.; Li, X.W.; Zhang, Z.F.

Analysis of Flow Field for Link Rod Butterfly Valve Xuedong Ma1, a, Jie Teng2,b 1 School of Mechanical Engineering and Automation ,University of Science and Technology Liaoning Liaoning, Anshan ,Liaoning Province,114051, China 2 School of Mechanical Engineering and Automation ,University of Science and Technology Liaoning Liaoning, Anshan ,Liaoning Province,114051, China amadong912@126.com , btengjie654321@163.com Keywords: Link rod butterfly valve, Flow field, Finite element Abstract: The link rod butterfly valve relies on the link mechanism inside the flow channel to realize opening.
Building analysis project of COSMOSFloworks and setting the boundary condition Material attribute setting and initial condition setting about the hot air depend on the analysis guide of COSMOSFloworks.
[4] Xinming Yuan,Genhai Mao, The numerical simulation of flow field and resistance Characteristics of Valve Pipe, Journal of Hydroelectric Engineering, 1999(4) :60-65

Non-coal strata appears gas generally in three ways: one situation is a structure connect coal strata of outside the tunnel site or tunnel deep; The second situation is although there is no coal strata in tunnel site, some black carbonaceous strata and mudstone has been reached generation gas phase, with the material basis for generating gas; The third situation is the compound action product of previous two cases.
Journal of Railway Engineering Society, 2010, 5(5):39-42(In Chinese)
Jiangxi Coal Science, 1999 (4) :24-58(In Chinese)
Communication of Science and Technology, 2004,9 (123) :9-14(In Chinese)

A Measuring Method of Flexible Bar based on Machine Vision Shaowei Liu1,a, Wu Liu1,b, Guoqing Ding1,c, Xin Chen1,d 1Department of Instrument Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, China 200240 aanry@sjtu.edu.cn, ballenlau@sjtu.edu.cn, cgqding@sjtu.edu.cn, dxchen.ie@sjtu.edu.cn Keywords: Flexible Bar, Machine Vision, Finite Element Analysis, Thickness, Bending Rigidity Abstract.
In the model, the settings of modeling are as following: the flexible bar’s diameter is 1.6 mm; its length is 19.2 mm; the thickness of thin neck is 20 mm, and the distances between the position of the minimum thickness and two endpoints are 10.8 mm and 8.4 mm; its material is beryllium bronze; its density is 8.3 g/cm3; its Young modulus is 133 GPa; its Poisson's ratio is 0.4.
Acknowledgements This research has been supported by the National Nature Science Foundation of China (No.50905116).
Guarnieri: Journal of Applied Physics Vol.11 (1979), p.6761 [2] K.