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Online since: March 2015
Authors: Yuan You Xia, Chun Shu Chen, Hua Bin Wang, Mudthir Bakri
Evaluation of pile application for slopes on Bedrock stability Mudthir Bakri1, a, Yuanyou Xia 1,b ,Chunshu Chen1,c , Huabin Wang 2,d 1, Wuhan University of Technology, Wuhan, 430070,China 2Huazhong University of Science and Technology, Wuhan 430074, China ambbakri@hotmail.com, bxiayy1965@126.com, cccsjxx@126.com, dhuabin@mail.hust.edu.cn Key words: slope stability; safety factor; socketed length, pile displacement; failure mode.
MATERIALS AND METHOD Numerical method and Materials Generally the stability of slopes reinforced with one row of piles is evaluated using pressure or displacement based methods, by applying a presumed or measured pressure or displacement distribution on piles granting to receive or in-situ evaluated values induced by lateral soil movements; merely it cannot describe the actual coupled pile-soil interaction, and it lead to an inexact estimations.
Material Properties required in the model computations Material Properties Pile Sliding soil Rock Density (Kg/m3) 2400 2000 2200 Elastic Properties Young's Modulus (Mpa) 1.
Canadian Geotechnical Journal. 1995;32(5):808-18
Applied Mechanics and Materials: Trans Tech Publ, 2014. p. 424-31.
Online since: October 2015
Authors: Erik Prada, Michael Valášek, Lenka Baločková
In this case, the test data represent a kind of virtual movement of the component, in which the simulated verification of the materials defects takes place, while no contact between sensor head and component can occur.
Baločková: The method for solving kinematics of an industrial robot, Applied Mechanics and Materials.
Baločková: Notional proposal of a mechatronic system of an artificial (robotic) snake and its electromagnetic actuator, International Journal of Science Commerce and Humanities.
Skařupa, P.Tuleja: Robotika : technické prostriedky pre automatizáciu výrobných procesov: navrhovanie, konštrukcia, príklady riešenia, Applied Mechanics and Materials.
Bobovský: Snake Robot Movement in the Pipe Using Concertina Locomotion, Applied Mechanics and Materials, Vol 611, p.121, (Trans Tech Publications, Switzerland 2014)
Online since: December 2011
Authors: Jarinee Jongpluempiti, Kiatfa Tangchaichit
Materials and Methodology In this study, three species of cassava rhizome, Kasetsart 50, Rayong 72 and Huay Bong 60, were used for biomass from cassava crop.
These raw materials were found in Nakhon Ratchasima province, Thailand and used as feedstock in this study.
The proximate analysis of a material to determine the content of at least some of its constituent components provides important information regarding the material.
Materials are composed primarily of the four components of moisture, volatiles, fixed carbon, and ash.
Sajjakulnukit: Renewable Energy Vols. 31 (2006), pp 599-610 [9] Patomsok Wilaipon: American Journal of Applied Sciences Vols. 7 (5) (2010), pp 698-701 [10] Christer Jansson, Anna Westerbergh, Jiaming Zhang, Xinwen Hu and chuanxin Sun: Applied Energy Vols.86 (2009), pp S95-S99 [11] Ashok Pandey, Carlos R.
Online since: February 2011
Authors: Wei Xu, Xuan Cang Wang
The relevant test materials.
The influence of asphalt types on fiber asphalt mixture’s properties resistance to water damage Testing process and raw materials are consistent with the above mentioned, Dolanit ® AS fiber was choosed as an example, fiber content is 0.3% (this fibers content is weight ratio of fiber accout for the total fiber asphalt mixture, the same below), the mixture gradation was AC-16C type, the optimum asphalt content was taken as 4.8%, test results are as follows: Table 1 Test results of Marshall immersion test and freeze-thaw splitting Asphalt+Fiber(AC-16C) Marshall residual stability MS0 Freeze-thaw splitting residual strength ratio TSR MS1(KN) MS2(KN) MS0(%) RT1(MPa) RT2(MPa) TSR(%) Karamay 70# 10.11 8.60 85.26 1.03 0.84 83.23 Karamay 70#+Dolanit AS 11.39 10.47 93.38 1.09 0.92 86.28 SBS-70# 12.43 10.82 88.31 1.10 0.94 86.28 SBS-70#+Dolanit AS 13.76 12.80 94.40 1.15 1.02 90.34 From Table 1 to kown: ①Residual stability of asphalt mixture added Dolanit AS fiber is higher than
The influence of fiber types on fiber asphalt mixture’s properties resistance to water damage Testing process and raw materials is the same as above, for the six fiber AC-16C and no fiber AC-16C, the fiber content was taken 0.3%, the optimum asphalt content was taken 4.8%, test results are as follows: (a) (b) Fig. 1 Test results for asphalt mixture Marshall immersion and freeze-thaw splitting: (a) Karamay 70# conventional asphalt AC-16C (b) SBS-70 # modified asphalt AC-16C From the above table and figure to know: ①the use of fiber and the modified asphalt, fiber asphalt mixture’s MS0 and TSR are significantly higher than non-fiber and using ordinary asphalt, which mean the fiber and modified asphalt can improve mixtures’ performance resistance to water damage, so if the project allows, modified asphalt fiber mixture is proposed as pavement materials. ②For Karamay 70# ordinary asphalt mixture, fiber types sort
Journal of materials science, Vol. 40(2005), p. 87-95
Online since: November 2012
Authors: Liu Xia
The material properties play well, saving materials and reducing self weight of structure.
As is shown in figure 2, a stem cell of truss beam structure is, with cross-sectional area, length, the modulus of elasticity materials , node displacement vector.
Material model uses isotropic material model of linear elasticity, the density of the material is7850kg/m3.
Beijing: Science Press, 2009, p.57-72 [3] GBJ17-1988, steel structure design codes. p.12-39 [4] Schmitt,L.A.
Jármai: Optimum strengthening of a column-supported oil pipeline by a tubular truss, Journal of Constructional Steel Research,2006,62(1-2), p.116-120
Online since: June 2008
Authors: Pezhman Farhadi Sartangi, Seiyed Ali Asghar Akbari Mousavi
Effect of Post Weld Heat Treatment on the Interface Microstructure of Explosively Welded Titanium/Stainless Steel Composite clad Pezhman Farhadi Sartangi 1,a , Seiyed Ali Asghar Akbari Mousavi2,b 1,2 School of Metallurgy and Materials Engineering, School Colleges of Engineering, University of Tehran, Tehran - Iran, P.O.
The variations in the width of the intermetallic phases is governed by the diffusion of constituent elements, grain growth of parent materials, residual stress produced during welding process, thermal mismatching between the flyer and base materials during the heating process and softening of base metals due to annihilation of structural defect [3].
References [1] A.Pocalyko: Welding Journal,Vol.january (1987), p.24
[2] M.Ghosh, S.Chatterjee: Materials Science and Engineering A Vol.390 (2005), p. 217
Chatterjee: Materials Characterization Vol.54 (2005), p.327
Online since: May 2006
Authors: Antoni Budniok, Eugeniusz Łągiewka, Jolanta Niedbała
Electrolytical Obtaining of Ni-Mo Coatings with Polypyrrole Jolanta Niedbała, Antoni Budniok, Eugeniusz Łągiewka Institute of Materials Science, University of Silesia 40-007 Katowice, Bankowa 12, Poland e-mail 1 : jniedbal@us.edu.pl, e-mail 2 :budniok@us.edu.pl, e-mail 3 : lagiewka@us.edu.pl Keywords: electrolytic coatings, polypyrrole, Ni-Mo alloy Abstract.
Electrodeposition is unique in that it can be used for processing ceramics, polymers, metals, composites and hybrid materials [6-10].
Conductive polymers have been investigated for use as the electrode materials for a number of applications including rechargeable batteries, electrochemical sensors etc. [11-12].
Although polymers of pyrrole have been known for over 50 years, interest in these materials has greatly increased in the past decade because polypyrroles when doped intrinsically electrically conductive.
Taking into account the properties of Ni-Mo alloys and PPy the composite materials containing these two components is expected to exhibit very interesting properties.
Online since: July 2006
Authors: M. Psoda, Andrzej Michalski, D. Siemiaszko, Jakub Jaroszewicz, Marcin Rosiński
Psoda 1 1 Warsaw University of Technology, Department of Materials Science and Engineering, 02-507 Warsaw, Wołoska 141, Poland e-mail: a mihalski@inmat.pw.edu.pl, b ds@inmat.pw.edu.pl, c jakubjaroszewicz@wp.pl, d ninmar@inmat.pw.edu.pl Keywords: pulse plasma sintering, PPS, WC, nanocrystalline, tungsten carbide Abstract.
%Co powders using pulse plasma sintering (PPS), a new technique, developed at the Faculty of Materials Engineering of Warsaw University of Technology.
In the PPS apparatus, the material is placed in a graphite die between two graphite punches.
Conference on Powder Metallurgy & Particulate Materials, Published by Metal Powder Industries Federation Princeton, NJ, p.105
Rosiński, International Journal of Self-Propagation HighTemperature Synthesis 12 (2003) 237
Online since: October 2007
Authors: Chang Seog Kang, Ik Hyun Oh, Jae Seol Lee, Jae Ik Cho, C.Y. Jeong, Joon Sik Park
Park2,f 1 Korea Institute of Industrial Technology, Materials and Parts Team, Gwangju Research Center, Gwangju, 506-824 Korea 2 Hanbat National University, Advanced Materials Engineering, Daejeon, 305-719 Korea a cskang7@kitech.re.kr, buwjaeik@kitech.re.kr, ccyjeong@kitech.re.kr, d ihoh@kitech.re.kr, e jslee7@kitech.re.kr, fjsphb@hanbat.ac.kr Keywords: bulk metallic glass, mechanical properties, composites, ductility, crystallization Abstract.
The application of BMGs has been extended from structural parts such as commercial golf club to functional parts such as pressure sensor or hydrogen storage materials [2].
When certain extents of the crystallization preceed, both strength and ductility was increased compared with the as-cast BMG, implying that a selection of optimized heating conditions for BMG can control the strength and ductility, when BMG is considered as a precursor for nano-structured materials.
Chang, Journal of Materials Science Vol. 40, (2005) p. 4999.
Online since: September 2013
Authors: Xia Feng, Xin Zhao, Qing Song Chen, Gui Jie Li
Introduction By applying the fundamental principles and methods of ecology to plan, design, construct, manage and operate, ecological campus is an environmental-friendly artificial ecosystem integrating functions like study, work, life, leisure together, in which forms a harmonious human-and-nature relation, reasonable layout structure of each species, high-quality environment, effective utilization of materials, energies and information [1].
For example, terraced landscape can be built utilizing gradually-up domain; natural spaces are molded utilizing natural materials, rural materials, and even local materials.
References [1] Jun Zhang: Journal of Heilongjiang Nongken Normal College Vol. 4 (2001), p. 58.
(in Chinese) [3] Kongjian Yu: Landscape: culture, ecology and Perception iffusion Processes in Advanced Technological Materials, 3rd Edition (Science Press, China, 2005).