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Van de Ven, Fluid Power System Dynamics, Department of Mechanical Engineering, Center for Compact and Efficient Fluid Power A National Science Foundation Engineering Research Center, University of Minnesota, Minneapolis, U.S.A. (2015)
Balan, Hydraulic Installations for Heavy Machine-Tools, Journal of Engineering Studies and Research Volume 18, No. 2, pp. 116-120 (2012)
Motomancea, Modeling and Simulation of Closed-Loop Counterbalancing Hydraulic Units for Heavy-Duty Machine-Tools, Applied Mechanics and Materials Vol. 332 pp 417-422© (2013)

Daily maintenance refers to the cost caused by preventive maintenance in a planned way or repairing some slight damage part for structure intact bridge and subsidiary facilities.Bridge maintenance are generally conducted regularly.Bridge maintenance costs include: maintenance personnel fees and other maintenance cost (curing materials and testing tool loss fee).
Special inspection cost refers to the expenditure that is caused by detailed detection, trials, estimate and evaluation of the distress condition of the quality of materials and working performance of bridge construction and components.
When the bridge reaches its service life and needs to be dismantled, there will be two expenses: dismantle cost, in short BC, and the savings resulting from recycling the old bridge's materials, in short, SC (i.e., the scrap value of the bridge).
Journal of Beijing University of Technology, 2010, 36 (4): 503-504.
Hebei University of Science and Technology , 2009,36 ( 3 ) : 99-101.

Environment of constant acceleration due to excessive stress may lead to fracture of materials may produce micro-cracks, and continue to expand over time, sequential, cumulative damage, and finally lead to lower strength of the material, fatigue, fracture, or life transformation, the structural integrity of the part or the whole failure, the part or the whole damage of the structural integrity.
Discover the disfigurement of material and manufacture techniques 4.
The star after experiencing mechanical tests does not result in extra material.
Beijing: China Science and Technology Press, (2008) [3] Randa, R.B., Tech, B.
AIAA Journal of Spacecraft and Rockets, 15(5):313-316, (1978)

Ruban3,d 1Institute of Quantum Materials Science, 620107, Ekaterinburg, Russia 2Institute of Metal Physics UD RAS, 620041, Ekaterinburg, Russia 3Royal Institute of Technology (ΚΤΗ), SE-100 44, Stockholm, Sweden aoleg.gorbatov@iqms.ru, byug@imp.uran.ru, ca_kuznetsov@imp.uran.ru, da.v.ruban@gmail.com Key words: short-range order, magnetism, induced magnetic anisotropy, phase diagram Abstract.
Introduction Fe-Si and Fe-Al alloys constitute the basis of soft magnetic materials [[1] Chin-Wen Chen.
Magnetism and metallurgy of soft magnetic materials (Dover, New York, 1986) ] and have been intensively studied for decades [[2] H.J.
Okamoto, Binary alloy phase diagrams, (ASM International, Materials Park, Ohio, 1990) ] are similar and consist of disordered solid solution which transforms to the D03 or B2 phase with the increase of the concentration of alloying elements.
Hafner, Journal Phys.

Recently, mixed metal oxide nanohybrid materials can often be more efficient photocatalyst than pure substances.
Experimental Details Materials: Iron (II) sulphate heptahydrate (FeSO4.7H2O, 99 %), copper sulphate pentahydrate (CuSO4.5H2O, 99 %), titanium dioxide, natrium hydroxide (NaOH), K2Cr2O7, ethanol and ethylene glycol (EG) were purchased from Merck.
The prepared nanohybrid exhibit a potential material to remove heavy metals from waste water.
Xiao, Magnetic Fe3O4@C/Cu and Fe3O4@CuO core–shell composites constructed from MOF-based materials and their photocatalytic properties under visible light, Appl.
Rao, Preparation and charaterization of magnetite nanoparticles by sol-gel method for water treatment, international journal of innovative research in science, engineering and technology, IJIRSET 2 (2013) 2969-2973

Pyrolysis Kinetic Analysis of Palm Kernel Shells Using Free Model Method: Effect of Heating Rate and Iron Ore Catalyst ARIANY Zulkania1,2,a*, GITA Fitriani1,b and IRAWATI1,c 1Chemical Engineering Department, Faculty of Industrial Technology, Universitas Islam Indonesia, Jalan Kaliurang Km 14.5, Yogyakarta 55584, Indonesia 2Study Centre for Materials Science and Engineering, Chemical Engineering Department, Universitas Islam Indonesia, Yogyakarta 55584, Indonesia a*ariany.zulkania@uii.ac.id, b18521010@students.uii.ac.id, c18521042@students.uii.ac.id Keywords: Biomass, Iron Ore, Kinetic Reaction Palm Kernel Shell, Pyrolysis, Thermogravimetry Abstract.
Material and Methods Ingredients.
The material used is palm kernel shells (PKS) and iron ore obtained from South Kalimantan.
PKS is cleaned and dried under the sun, then crushed and sieved to obtain a material size of (-25+35) Mesh.
Bindar, Chemicals component yield prediction and kinetic parameters determination of oil palm shell pyrolysis through volatile state approach and experimental study, Journal of Analytical and Applied Pyrolysis. 161 (2022) 105399

Results and analysis The result shows the base material strengths are about 658Mpa in the five testing groups.
After been corroded, the base material's mechanical strength is changed.
There are sensitive to corrosion and continuity channel in the material, and this kind of channel is anode in specific sounding.
They are always first corrosion spots in the material surface under the combined effects of stress and media, the formation of cracks, and gradually to the invasion inside the material until fracture.
Welding Journal.

In most of these approaches, the rock surrounding the bore hole is considered as a nonlinear continuum material.
For this, the demand for a new tool has boosted the birth of RFPA2D (Rock Failure Process Analysis code) based on FEM, which may be of help to improve the better understanding of seismicities induced in rock failure and failure mechanisms of brittle rock materials.
The rock property is chosen so as to simulate the brittle behavior of rock material summarized in Table 1.
Kou: Crack propagation and coalescence in brittle materials under compression ENG FRACT MECH 61 (3-4) (Sep.
Cook: Analysis of Borehole Breakouts, Journal of Geophysical Research Vol. 94.

Skid steer loader shovel action features combined with advantages of the shovel method of cooperation, we design the trajectory of shovel as follows: (1) In the line segment shown in the Figure,the boom and bucket keeps still ,the bucket bottom and the bottom of the material maintain Figure 1.Schematic diagram of coordinate level, the whole machine maintains a uniform speed frame of working devices of inserting into the stockpile to the A point; (2) In curve segment shown in the Figure, the whole machine maintains a uniform speed of progress at, the boom keeps upgrading and bucket keeps turning to complete the setting track.
Tracking curve and error curve of shovel track In Fig.5 and Fig.6, 1mm amplitude jitter occurs in 0.625s, the boom and bucket cylinder being in contact with the material since 0.625s accounts for this happening , sudden loading exerts certain shock on the hydraulic system.
Chinese Mechanical Engineering,7,64-66(1996) [2] He Qinghua, Zhang Daqing, Huang Zhixiong and Zhang Xinhai: Adaptive Control of Hydraulic Excavator Manipulator, Journal of Tongji University (Natural Science), 9,1259-1263(2007) [3] Zhang Daqing: Reaearch on Motion Control of Working Device of Hydraulic Excavator, Central South University(2006) [4] Ning Qiaoqiao: Reasearch on Adaptive Control of Loaders in Digging, Jilin University(2008) [5] Cai Zixing: Robotics, Tsinghua University Press(2009) [6] Wu Long: A Study on Automatic Control of Wheel Loaders in Rock/soil Loading, The University of Arizona(2003) [7] Zhang Haitao, He Qinghua, Zhang Xinhai and Huang Zhixiong: Modeling And Control Of The Motion System Of a Hydraulic Robotic Excavator, Robotic, 3,113-117(2005)

Experimental Materials.
Acknowledgements: Financial support for this work was provided by The National Natural Science Foundation of China (31072085) and The National Basic Research Program of China (973 program, 2005 CB121000) References: [1] X.Chen, K.
MU: Journal of Shandong Agricultural University Vol.1 (2002), p. 14 [4] J.