Search results

Study on Critical Drilling Parameters for Auger Drilling Songcheng Tan 1,2,a, Longchen Duan 1,b,*, Songe Tan 1,c and Hao Shi 1,d 1Faculty of Engineering, China University of Geosciences (Wuhan) 2Engineering Research Center of Rock-Soil Drilling & Excavation and Protection awstansongcheng@163.com, bduanlongchen@163.com, cfeitian008@126.com, dqiuhuaxn@163.com Key words: Auger drilling; Critical model of drilling parameter; Trajectory of chip transportation Abstract: Auger drilling is widely employed in pile foundation engineering and sampling test for geological sciences, and is even considered as one of the idealest methods for space sampling.
Introduction Auger drilling is widely used in pile foundation engineering, geological sampling for sand soil, and even regarded as one of the best drilling approaches for space sampling because of its continuity of transportation of soil as well as the high efficiency of construction etc.
The experiments done by Kenny indicates that drill torque is increased with the increase of the drilling depth, the density of drilling material and the feeding rate [1].
Pile Foundation engineering Auger drill in pile foundation engineering is mainly applied to miscellaneous fill, clay layer, siltyclay, siltseam, sand layer, and gravel (particle sizes are less than 150mm, gravel content is 30% to 40%).

Ferula fibers may be proposed as an alternative reinforcing agent in composite materials.
Because of the complexity of the structure and composition that present in natural cellulose materials, how to extract plant cellulose by efficient and environmentally friendly way will become a key step to utilize biomass further.
[5] Hu Yujie, He Chunju: Natural polymer materials (Beijing: chemical Industry Press, 2012)
[9] Man Chen, Yonghong Ma, Yang Xu, et al: Polymer-Plastics Technology and Engineering, 2013, 52(15):1566-1573
[24] Dahou W, Ghemati D, Oudia A, et al: Biochemical Engineering Journal, 2010, 48(2):187-194

Pairs of materials used for hip implant joints The most frequent combinations of materials used for hip implant joints are Metal-on-Polyethylene bearings (MoP), followed by Metal-on-Metal bearings (MoM), Ceramic–on-Polyethylene (CoP), and Ceramic-on-Ceramic (CoC).
Method and Materials For this experiment we used a range of equipment and accessories located in Laboratory of Medical Engineering of the Faculty of Product Design and Environment.
Lemons, An Introduction to Materials in Medicine, 2nd Edition, California, Elsevier Academic Press: (2004) 535
Tribology and interface engineering series, (U.K.) (2006)
[19] Standard Test Method forWear Testing of Polymeric Materials Used in Total Joint Prostheses.

It includes not only the scientific computing data visualization but also the engineering data and measurement data visualization.
First, we meticulously organize the teaching materials, the way of presenting the algorithm, page layout.
The system complements the material in Chapters 2-12 of the textbook used in this course, Tongcheng Huang’s Data Structures[6].
Students used the system in the recitation session laboratory before the lecture in which the corresponding material was discussed.
The first problem tested the material in two of the graph exercises in the system-categorizing graphs and graph searches.

Structure and mechanical properties of starch/ styrene-butadiene latex composites Gang Chen1,a*, Zhengjun Zhu1,b, Pekka Salminen1,2,c and Martti Toivakka3,d 1State Key Laboratory of Pulp and Paper Engineering, Guangzhou 510640, China 2Styron LLC, Samstagern 138833, Switzerland 3Laboratory of Paper Coating and Converting, Abo Akademi University, Turku FI20500, Finland a* Corresponding author：papercg@scut.edu.cn, bzzhu@styron.com, cpsalminen@styron.com, dmtoivakka@abo.fi Keywords: Starch, Migration, Phase separation, Co-continuity, Mechanical properties, Perera approach Abstract: The structure of the starch/styrene-butadiene latex composites was characterized using Scanning Electron Microscopy (SEM).
However, the fluctuations of crude oil raw materials and the increasing environmental concerns put stress on SB latex industry.
Experimental Materials.
Ahmad, Mechanical and biodegradation properties of sago starch natural rubber latex Composites, 7th Asian Australian Conference on Composite Materials, Taibei 2010

., Yilan, Taiwan 2 Department of Civil Engineering, National Ilan University, No.1, Sec. 1, Shen Nung Rd., Yilan, Taiwan ahrhsieh@niu.edu.tw Keywords: Time lag phenomenon, Thermal environment, Construction type, Domestic building, Taiwan.
Introduction The construction type of a building envelope is the key factor to its indoor temperature changes and energy consumptions [1,2,3].
Case Study Subjects The case study subjects in this research were classified into two categories, according to the construction materials of envelop, as Reinforced Concrete Construction Type and Composite Construction Type.
The Reinforced Concrete Construction Buildings of this research were referred to as the buildings with the external walls and roofs of the building envelopes mainly made of the building materials of Reinforced Concrete.
On the other hand, Composite Construction was a generic term to describe any building construction with external walls and roofs involving multiple dissimilar materials rather than reinforced concrete.

Smart Wheelchair Stair Lift Using RFID Detection Method and Fuzzy-PI with PLC Ladder Control FULL Songkran Kantawong Faculty of Engineering, Bangkok University, Pathumtani, Thailand Email: songkran.k@bu.ac.th Keywords: Wheelchair Stair Lift, Fuzzy-PI Control, PLC Ladder Control, RFID, CDM, Stair guide Rail, Steering Gear Box.
System Block Diagram Wheelchair Stair Lift Mechanism Module Design The wheelchair stair lift plat form is shown in Fig. 3 that are consisted of five main parts such as lamp lift plate, two independent safety arm rods, control box unit, key pad control and stair guide rail coupling units.
The simulation results of material strength is revealed that the maximum yield strength is equal toare appeared at the both end sides of the plate that have less than material yield strength rated at , while the elastic modulus is equal to and the Poisson ratio is equal tothat have less than the critical values.
The displacement change is equal to in loading situation that are occurred at the both end sides of the scissor beams and not important effect to this material strength.
The matlab simulations are done for F-PI control and fuzzy ladder control, while the solid work simulations program version 2010 are done for testing the material strength, elastic modulus and displacements.

Effect of rapid quenching in magnetic field on the microstructures and electrochemical performances of AB5-type alloys Yougen Tang, Chenxi Jiang, Yazhi Wang, Xiaopei Gao, Jinbao Zhang Key Laboratory of Resources Chemistry of Nonferrous Metals, Ministry of Education, School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China Email：ygtang@263.net Keywords: AB5-type hydrogen storage alloys; rapid quenching; magnetic field; microstructures; electrochemical performances Abstract.
Introduction Energy crisis and environmental pollution are strongly concerned recently, which simultaneously accelerates the development of new energy materials.
Among various materials considered to store hydrogen, hydrogen storage alloys have been widely used for negative electrode of nickel metal hydride batteries regarded as the preferred rechargeable batteries for portable power tools, EVs, HEVs, and PHEVs at present [2, 3].
On the other hand, the important role of magnetic field in preparation of materials was concerned by more and more people.

Monceau 4,d 1 Faculty of Engineering and Computer Sciences, FH Osnabrück University of Applied Sciences 49009 Osnabrück, Germany 2 Betriebsforschungsinstitut - VDEh, Düsseldorf, Germany 3 Institut für Werkstofftechnik, Universität Siegen, Germany 4 CIRIMAT CNRS-INPT-UPS, ENSIACET, Toulouse, France a u.krupp@fh-osnabrueck.de, brobert.orosz@bfi.de, cchrist@ifwt.mb.uni-siegen.de, d daniel.monceau@ensiacet.fr Keywords: Nickel-base alloys, creep, cyclic oxidation, internal oxidation, internal nitridation, embrittlement.
At very high temperatures, solid-state diffusion of both the corrosive species and the metallic alloying elements is the key issue of high-temperature degradation.
The results show clearly that components or materials of low wall thickness and/or sharp edges exhibit a particular susceptibility to "breakaway oxidation" in combination with massive internal attack.
Acknowledgments The financial support by Deutsche Forschungsgemeinschaft (DFG) and the supply with the test materials Alloy 80A (Nicrofer 7520 Ti) by Krupp VDM, Altena, Germany, and CMSX-4 by Alstom, Baden, Switzerland, is gratefully acknowledged.
Christ: Materials and Corrosion, Vol. 57 (2006) p. 154 [21] R.

Materials and Methods Description of sample collection.
Scheffknecht, Use of wood dust fly ash from an industrial pulverized fuel facility for rendering, Construction and Building Materials. 189 (2018) 825-848
Okmanis, Use of Wood Ash in the Forest and Its Effect on the Concentration of Essential and Heavy Metallic Elements in Soil and Blueberries (Vaccinium myrtillus L.), Key Engineering Materials. 850 (2020) 179-183