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Calculus of the Relationship of the Cutting Moment at Drilling of the Stainless Steel X15CrNiSi20-12
Online since: May 2015
Authors: Marius Iacob, Aurelian Vlase, Ovidiu Blăjină
The great difficulties for the cutting of the stainless steels involved intense studies to create new materials for cutting tools and sensible choice for the tools geometric parameters and cutting regime [7, 8, 9].
Davis, Ed., ASM Specialty Handbook: Stainless Steels, ASM International, Materials Park, Ohio, 2000
Alintas, Time domain simulation of torsional-vibrations in drilling, International Journal of Machine Tools and Manufacture, Vol. 46, Elsevier, (2006) 2073-2085
Processing, Structure and Performance, ASM International, Materials Park, Ohio, 2005
Wirote, Combined sliding-mode speed-torque observer, WSEAS International Conference on System Science and Simulation in Engineering, ICOSSSE'05, Tenerife, Spain (2005) 191-196
Davis, Ed., ASM Specialty Handbook: Stainless Steels, ASM International, Materials Park, Ohio, 2000
Alintas, Time domain simulation of torsional-vibrations in drilling, International Journal of Machine Tools and Manufacture, Vol. 46, Elsevier, (2006) 2073-2085
Processing, Structure and Performance, ASM International, Materials Park, Ohio, 2005
Wirote, Combined sliding-mode speed-torque observer, WSEAS International Conference on System Science and Simulation in Engineering, ICOSSSE'05, Tenerife, Spain (2005) 191-196
Online since: January 2013
Authors: Fang Wei Zhao, Xiao Ling Shi, Ji Long Xie, Rong Quan Yu
Fatigue is an important factor for the destruction of material and structural failure.
Bolster material S-N curve use power function, whose parameters is shown in table 2.
The total stress spectrum of fatigue weakest part is substituted into materials P-S-N curve by Miner cumulative damage rule to calculate fatigue damage.
Yao: China safety science journal, Vol. 14 (2004) No.5, p110
Chen: Fatigue and Fracture (Huazhong University of Science and Technology Press, China 2002)
Bolster material S-N curve use power function, whose parameters is shown in table 2.
The total stress spectrum of fatigue weakest part is substituted into materials P-S-N curve by Miner cumulative damage rule to calculate fatigue damage.
Yao: China safety science journal, Vol. 14 (2004) No.5, p110
Chen: Fatigue and Fracture (Huazhong University of Science and Technology Press, China 2002)
Online since: October 2019
Authors: Siriporn Pranee, Thanakit Sirimahasal, Lida Simasatitkul, Samitthichai Seeyangnok, Semih Durmus, Yutthana Kalhong
Hence, in this work α-HH has been prepared by a hydrothermal process using CG raw material in ethylene glycol/water solution at 95ᵒC for 7 hrs.
Materials and Method All of the reagents were purchased from Sigma Aldrich with purity 99.5%.
Phase morphology of CG and samples The particle size, shape and morphology influence the strength of the materials.
The raw material supported by Thai Citric Acid, Co, LTD., Thailand References [1] C.R.
Kong, Preparation of α‐calcium sulfate hemihydrate from calcium sulfate dihydrate in methanol–water solution under mild conditions, Journal of the J Am Ceram Soc. 94(10) (2011) 3261-3266
Materials and Method All of the reagents were purchased from Sigma Aldrich with purity 99.5%.
Phase morphology of CG and samples The particle size, shape and morphology influence the strength of the materials.
The raw material supported by Thai Citric Acid, Co, LTD., Thailand References [1] C.R.
Kong, Preparation of α‐calcium sulfate hemihydrate from calcium sulfate dihydrate in methanol–water solution under mild conditions, Journal of the J Am Ceram Soc. 94(10) (2011) 3261-3266
Online since: June 2012
Authors: Kayrbekov Zhaksyntay, Aubakirov Ermek, Myltykbaeva Zhannur
Catalytic processing of coal into liquid fuels: mechanochemical activation of coal
Kayrbekov Zhaksyntay 1a, Aubakirov Ermek2b, Myltykbaeva Zhannur3c
1,2,3 Al-Farabi Kazakh National University, Scientific Research Institute of new chemical technologies and materials, Almaty, Kazakhstan
aZhaxyntay.Kairbekov@kaznu.kz, b Ermek.Aubakirov@kaznu.kz, cZhannur.Myltykbaeva@kaznu.kz
Keywords: Coal, mechanical processing.
Selective transformation of the composition of organic mass of coal (OMC), can contribute to appearance of destructive transformations of carbon materials under milder conditions, thereby changing both the depth and speed of the process and the resulting composition of liquid and gaseous products.
Modern science and technology evolve in the direction of creation of technologies that take place under the influence of high-energies, including the effects of mechanical energy.
Basic researches in the field of natural sciences according to the program «To develop scientific bases of processing of combustible minerals and receiving new materials» References [1] A.
[3] Yarmenko ZM, Fedushinskaya LB, NV Gurzel Sedimentation analysis of suspensions of fine powders: Colloid Journal. 1995. № 4.
Selective transformation of the composition of organic mass of coal (OMC), can contribute to appearance of destructive transformations of carbon materials under milder conditions, thereby changing both the depth and speed of the process and the resulting composition of liquid and gaseous products.
Modern science and technology evolve in the direction of creation of technologies that take place under the influence of high-energies, including the effects of mechanical energy.
Basic researches in the field of natural sciences according to the program «To develop scientific bases of processing of combustible minerals and receiving new materials» References [1] A.
[3] Yarmenko ZM, Fedushinskaya LB, NV Gurzel Sedimentation analysis of suspensions of fine powders: Colloid Journal. 1995. № 4.
Online since: November 2012
Authors: Juan Juan Wu, Qing Lin Yi, Tian Fan Dai
Application Example
Background Material of the Case.
In the process of concrete casting, the main risk factors include construction technical factors, capital factor, material supply factors and meteorological factors, according to the risk factors above, establishing the risk events set
Natural factors includes meteorological factors, force majeure factors; Resource supply factors include basic construction condition factors like material factors, equipment factors, water, electricity and air factors.
Schedule Management Information System of Hydropower Project[D].Wuhan: Huazhong University of Science and Technology(2004) (in chinese) [2]Zonghe Yu,in:Discussion on Schedule control theory and method :submitted to Journal of Optimization of Capital Construction(2000) (in chinese) [3]Feng Cai.
Tianjing:Tianjin University (2007) (in chinese) [4]Hongwei Huang, Long Chen, Qunfang Hu, Guixiang Chen, Yan Wang. the whole life risk management of tunnel and underground engineering, edited by Science Press, Beijing (2010) , in press.
In the process of concrete casting, the main risk factors include construction technical factors, capital factor, material supply factors and meteorological factors, according to the risk factors above, establishing the risk events set
Natural factors includes meteorological factors, force majeure factors; Resource supply factors include basic construction condition factors like material factors, equipment factors, water, electricity and air factors.
Schedule Management Information System of Hydropower Project[D].Wuhan: Huazhong University of Science and Technology(2004) (in chinese) [2]Zonghe Yu,in:Discussion on Schedule control theory and method :submitted to Journal of Optimization of Capital Construction(2000) (in chinese) [3]Feng Cai.
Tianjing:Tianjin University (2007) (in chinese) [4]Hongwei Huang, Long Chen, Qunfang Hu, Guixiang Chen, Yan Wang. the whole life risk management of tunnel and underground engineering, edited by Science Press, Beijing (2010) , in press.
Online since: December 2011
Authors: Wei Ming Lin, Han Bo Zou, Zhao Hui Zhao
Introduction
Ammonia decomposition have attracted considerable attention in recent years as a potential method of on-site hydrogen generation for Proton exchange membrane fuel cells (PEMFCs) due to its remarkable advantages compared with the conventional routes from carbonaceous materials[1-4].
In particular, the Mo-based nitrides have attracted considerable attention in recent years, and their performance is affected by the the support materials.
Experimental Materials preparation.
Acknowledgments We sincerely thank the National Natural Science Foundation of China (20806017), the Guangdong Province Natural Science Foundation (10151009101000009) for financial supports.
Wang: Journal of Catalysis Vol. 236 (2005), p. 181 [2] T.V.
In particular, the Mo-based nitrides have attracted considerable attention in recent years, and their performance is affected by the the support materials.
Experimental Materials preparation.
Acknowledgments We sincerely thank the National Natural Science Foundation of China (20806017), the Guangdong Province Natural Science Foundation (10151009101000009) for financial supports.
Wang: Journal of Catalysis Vol. 236 (2005), p. 181 [2] T.V.
Online since: December 2016
Authors: Laura Rozenberga-Voska, Aleksejs Zolotarjovs, Jānis Grabis
However, there is no comprehensive understanding of the luminescence mechanisms and the development of new materials is very often based on trial and error methods [9].
The starting materials were dissolved in deionised water (Dy2O3 in diluted nitric acid) and stirred on the hotplate until the transparent solution boiled and underwent dehydratation.
Lakshmanan, Luminiscence and Display Phosphors: Phenomena and Applications, Nova Science Publishers, New York, 2008, pp 9, 274
Pooja, Tuning of Emission Colours in Strontium Aluminate Long Persisting Phosphor, Journal of Physics D: Applied Physics 36 (2003) 2244-2248
Dutczak, Eu2+ activated persistent luminiscent materials, Doctoral Thesis, Debye Institute, University of Utrecht, 2013
The starting materials were dissolved in deionised water (Dy2O3 in diluted nitric acid) and stirred on the hotplate until the transparent solution boiled and underwent dehydratation.
Lakshmanan, Luminiscence and Display Phosphors: Phenomena and Applications, Nova Science Publishers, New York, 2008, pp 9, 274
Pooja, Tuning of Emission Colours in Strontium Aluminate Long Persisting Phosphor, Journal of Physics D: Applied Physics 36 (2003) 2244-2248
Dutczak, Eu2+ activated persistent luminiscent materials, Doctoral Thesis, Debye Institute, University of Utrecht, 2013
Online since: January 2009
Authors: Jin She Yuan, Dang Qiang Yang, Chang Min Yang
Concentrator can use the relatively inexpensive materials such as
plastic lenses and metal housings to capture the solar energy shining on a fairly large area and focus
that energy onto a smaller area which gives greater power output per unit area of silicon compared to
the flat plate systems
[2].
Of several choices for a top surface material, a common choice is tempered and low-iron glass.
In many modules, the rear surface material is typically a thin polymer sheet Tedlar.
Karlsson:Solar Energy Materials & Solar Cells Vol.75(2003), p.567 [2] MARIA BROGREN, PER NOSTELL AND BJO RN KARLSSON: Solar Energy Vol. 69 (Suppl.) (2000) p. 173 [3] Kenji Araki, Michio Kondo, Hisafumi Uozumi, Yoshishige Kemmoku "A 28 % EFFICIENT, 400 X AND 200 WP CONCENTRATOR MODULE", E-mail: k-araki@ac.daido.co.jp [4]Tripanagnostopoulos, Y., Th.
Ebrahim Ali Alfegi, Kamaruzzaman Sopian, Mohd Yusof Hj Othman and Baharudin Bin Yatim: American Journal of Applied Sciences 5 (7)( 2008) p.866-871
Of several choices for a top surface material, a common choice is tempered and low-iron glass.
In many modules, the rear surface material is typically a thin polymer sheet Tedlar.
Karlsson:Solar Energy Materials & Solar Cells Vol.75(2003), p.567 [2] MARIA BROGREN, PER NOSTELL AND BJO RN KARLSSON: Solar Energy Vol. 69 (Suppl.) (2000) p. 173 [3] Kenji Araki, Michio Kondo, Hisafumi Uozumi, Yoshishige Kemmoku "A 28 % EFFICIENT, 400 X AND 200 WP CONCENTRATOR MODULE", E-mail: k-araki@ac.daido.co.jp [4]Tripanagnostopoulos, Y., Th.
Ebrahim Ali Alfegi, Kamaruzzaman Sopian, Mohd Yusof Hj Othman and Baharudin Bin Yatim: American Journal of Applied Sciences 5 (7)( 2008) p.866-871
Online since: February 2011
Authors: Jun Fei Wu, Wei Gao
Three-thread Single-screw Pump
JunFei Wu 1,a, Wei Gao 1,b
1College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao, 266061, China
ajfw_2002@sina.com, bdwnly@163.com
Keywords : three-thread single-screw pump ; curtate hypocycloid; curtate epicycloids;ANSYS finite element analysis
Abstract.
Because the materials elastic modulus of cylinder block and rubber exists great differences, the cylinder bushing of stator is removed for simplifying the calculation, and the displacement constraint of X and Y direction are applied on the outer rubber.
The material of rotor is alloy steel, elastic modulus is E=210Gpa, Poisson's ratio=0.3; the rubber material constitutive relation by linear elastic computation, elastic modulus E=4Mpa, Poisson's ratio=0.499[3]. 2 Finite Element Model Creation And Finite Element Analysis 2.1 An Outer Isomeric of Curtate Hypocycloid is Used to Be The Primary Gear of Stator Forms for The Equal Wall Thickness Three-thread Single-screw Pump 2.1.1 Applied 5Mpa Uniform Pressure on Lumen Contour Line of Stator and Created Analysis Model Take the amplitude coefficient of curtate hypocycloid model is 1/3, and take the calculation section near the exit in order to reflect the maximum deformation, the displacement, stress and strain value of screw pump rubber stator will be calculated in that case.
Acknowledgement: We gratefully acknowledge the support of the Natural Science Foundation Project of Shandong Province(ZR2010EL027), the international cooperation training project of outstanding teachers in Shandong Province References: [1]He Yan, Qin Jia, Zhu Xueqin, et al.
FEM Analysis Policy for a General Screw-Pump’s Stator[J].Chinese Journal of Mechanical Engineering,2003,40(5):590-598 [3]Yang Xiuping, Guo jinjin.
Because the materials elastic modulus of cylinder block and rubber exists great differences, the cylinder bushing of stator is removed for simplifying the calculation, and the displacement constraint of X and Y direction are applied on the outer rubber.
The material of rotor is alloy steel, elastic modulus is E=210Gpa, Poisson's ratio=0.3; the rubber material constitutive relation by linear elastic computation, elastic modulus E=4Mpa, Poisson's ratio=0.499[3]. 2 Finite Element Model Creation And Finite Element Analysis 2.1 An Outer Isomeric of Curtate Hypocycloid is Used to Be The Primary Gear of Stator Forms for The Equal Wall Thickness Three-thread Single-screw Pump 2.1.1 Applied 5Mpa Uniform Pressure on Lumen Contour Line of Stator and Created Analysis Model Take the amplitude coefficient of curtate hypocycloid model is 1/3, and take the calculation section near the exit in order to reflect the maximum deformation, the displacement, stress and strain value of screw pump rubber stator will be calculated in that case.
Acknowledgement: We gratefully acknowledge the support of the Natural Science Foundation Project of Shandong Province(ZR2010EL027), the international cooperation training project of outstanding teachers in Shandong Province References: [1]He Yan, Qin Jia, Zhu Xueqin, et al.
FEM Analysis Policy for a General Screw-Pump’s Stator[J].Chinese Journal of Mechanical Engineering,2003,40(5):590-598 [3]Yang Xiuping, Guo jinjin.
Constructing Dual Band Metamaterial Absorbers at Mid-Infrared by Employing Multi-Resonant Structures
Online since: May 2015
Authors: Xiao Mei Yu, Yong Zheng Wen, Rui Zhao, Wei Ma
Introduction
The perfect metamaterial absorber is a burgeoning branch of electromagnetic metamaterials, which are arrays of structured subwavelength elements designed to imitate the atoms in natural materials [1].
Acknowledgement This work was funded by the National Natural Science Foundation of China (grants No. 61036006 and 61275104).
Padilla, "Metamaterial electromagnetic wave absorbers," Advanced Materials, vol. 24, pp.
Karunasiri, "Bi-material terahertz sensors using metamaterial structures," Optics Express, vol. 21, pp. 13256-71, Jun 3 2013
Gu, et al., "A polarization insensitive and wide-angle dual-band nearly perfect absorber in the infrared regime," Journal of Optics, vol. 14, p. 085102, 2012
Acknowledgement This work was funded by the National Natural Science Foundation of China (grants No. 61036006 and 61275104).
Padilla, "Metamaterial electromagnetic wave absorbers," Advanced Materials, vol. 24, pp.
Karunasiri, "Bi-material terahertz sensors using metamaterial structures," Optics Express, vol. 21, pp. 13256-71, Jun 3 2013
Gu, et al., "A polarization insensitive and wide-angle dual-band nearly perfect absorber in the infrared regime," Journal of Optics, vol. 14, p. 085102, 2012