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Online since: July 2011
Authors: D.J. Stephenson, Tan Jin, X.M. Sheng
The setting file for the XRD measurement is calibrated against tensile test samples of the same material with known stress status.
There is no direct link shown between the stresses and grinding temperatures or material removal rates.
By assuming the indentation depth of the grit equals the average chip thickness, the contact area between the grit and workpiece material is can then be calculated if the derived, when considering the ploughing mechanism of grits and the elastic recovery of workpiece material.
Acknowledgement Part of this research was funded by the China State Council Major scientific and Technological Research Programme ‘High-end CNC Machine Tools and Fundamental Manufacturing Equipment’ under the Grant 2009ZX04014-04:high-speed/ultrahigh-speed grinding of difficult to machine materials and partly by the Engineering and Physical Sciences Research Council under grant EP/E001874/1.
McCormack: Journal of Materials Processing Technology Vol. 107 (2000), p. 216
There is no direct link shown between the stresses and grinding temperatures or material removal rates.
By assuming the indentation depth of the grit equals the average chip thickness, the contact area between the grit and workpiece material is can then be calculated if the derived, when considering the ploughing mechanism of grits and the elastic recovery of workpiece material.
Acknowledgement Part of this research was funded by the China State Council Major scientific and Technological Research Programme ‘High-end CNC Machine Tools and Fundamental Manufacturing Equipment’ under the Grant 2009ZX04014-04:high-speed/ultrahigh-speed grinding of difficult to machine materials and partly by the Engineering and Physical Sciences Research Council under grant EP/E001874/1.
McCormack: Journal of Materials Processing Technology Vol. 107 (2000), p. 216
Online since: September 2013
Authors: Jian Ming Wang, Yan Liu, Chun Lin He, Yang Liu
Experiments
Experimental Materials.
As experimental materials had highly active materials in the test, the argon was used to cut off the air to make sure that the experiment went smoothly.
Acknowledgments This work was supported by the Liaoning Province Natural Science Fund Project (No. 20102156) and the Open Subject Fund of the State Key Laboratory of Rolling and Automation of NEU, China (No. 2009003).
Chen: Advanced Materials Research Vol. 317-319 (2011), p. 154-157 [3] B.Q.
Arakane: Quarterly Journal of the Japan Welding Society Vol. 21 (2003), p. 267-273
As experimental materials had highly active materials in the test, the argon was used to cut off the air to make sure that the experiment went smoothly.
Acknowledgments This work was supported by the Liaoning Province Natural Science Fund Project (No. 20102156) and the Open Subject Fund of the State Key Laboratory of Rolling and Automation of NEU, China (No. 2009003).
Chen: Advanced Materials Research Vol. 317-319 (2011), p. 154-157 [3] B.Q.
Arakane: Quarterly Journal of the Japan Welding Society Vol. 21 (2003), p. 267-273
Online since: October 2014
Authors: Ri Dong Liao, Zhe Zhao, Kun He, De Lin Sun
Therefore, the strength and reliability of the clamp are related to the dynamic response in the vibration environment, which is a question of dynamic strength. in existing literature The research on the failure of clamp used for aerospace focus on materials technology, structure, and static strength calculation.
Metal Materials and Metallurgy Engineering, 2011,39(2): 12-14
Ordnance Material Science and Engineering, 2009,32(3): 84-86
Applied Mechanics and Materials, 2014, 456: 567-570
Journal of materials engineering and performance, 2013, 22(4): 926-935
Metal Materials and Metallurgy Engineering, 2011,39(2): 12-14
Ordnance Material Science and Engineering, 2009,32(3): 84-86
Applied Mechanics and Materials, 2014, 456: 567-570
Journal of materials engineering and performance, 2013, 22(4): 926-935
Online since: February 2014
Authors: Natt Makul, Ratsamee Sangsirimongkolying, Somkid Soottitantawat, Laongtip Mathurasa
Experiments
Materials
In accordance with ASTM C150 specifications [6], Type 1 Portland cement (OPC) was used as a main cementing material in all self-compacting mortar (SCM) mixtures.
Materials were added with a polycarboxylate-based superplasticizer (PC-Super) at water-to-powder (w/p) ratios between 1.2% and 1.8%, to provide the desired flow spread.
The following materials were added in sequence: water, PC-Super, sand, BA, CCP, and OPC.
Wakamura: Utilization of bagasse energy in Thailand, Mitigation and Adaptation Strategies for Global Change Journal 8(3) (2008), pp.253-260
[6] American Society for Testing and Materials: Standard Specification for Portland Cement, ASTM C150, Philadelphia, United States of America, (2009)
Materials were added with a polycarboxylate-based superplasticizer (PC-Super) at water-to-powder (w/p) ratios between 1.2% and 1.8%, to provide the desired flow spread.
The following materials were added in sequence: water, PC-Super, sand, BA, CCP, and OPC.
Wakamura: Utilization of bagasse energy in Thailand, Mitigation and Adaptation Strategies for Global Change Journal 8(3) (2008), pp.253-260
[6] American Society for Testing and Materials: Standard Specification for Portland Cement, ASTM C150, Philadelphia, United States of America, (2009)
High Temperature Martensitic Transformation and Shape Memory Behavior in Hfir Intermetallic Compound
Online since: January 2013
Authors: Yuri N. Koval, Valeri V. Odnosum, Georgiy Firstov
SME behavior changes in the homogeneity range of HfIr compound are discussed
Introduction
During the last two decades, the new class of functional materials appeared – high temperature shape memory alloys (HTSMA) [1, 2].
Despite significant progress achieved for TiNiPt and TiNiZr alloys (~3% of reversible strain in temperature interval not higher than 600 K), no successful application of these materials was claimed so far.
Koval, High temperature shape memory alloys problems and prospects, Journal of Intelligent Material Systems and Structures 17 (2006) 1041-1047
Noebe, High temperature shape memory alloys, International Materials Reviews 55 (2010) 257-315
[3] Inorganic Material Database (AtomWork), http://crystdb.nims.go.jp/index_en.html
Despite significant progress achieved for TiNiPt and TiNiZr alloys (~3% of reversible strain in temperature interval not higher than 600 K), no successful application of these materials was claimed so far.
Koval, High temperature shape memory alloys problems and prospects, Journal of Intelligent Material Systems and Structures 17 (2006) 1041-1047
Noebe, High temperature shape memory alloys, International Materials Reviews 55 (2010) 257-315
[3] Inorganic Material Database (AtomWork), http://crystdb.nims.go.jp/index_en.html
Online since: August 2021
Authors: Xiao Yong Wang
International Journal of Concrete Structures and Materials 12 (2018) 1-13
[3] Papadakis VG, Fardis MN, Vayenas CG.
Materials and Structures, 25(1992) 293-304 [4] Park DC.
Construction and Building Materials 22 (2008) 2260-2268 [5] Li G, Dong L, Bai ZA, Lei M, Du JM.
Construction and Building Materials 142 (2017)59-65 [6] Lo TY, Liao WY, Wong CK, Tang W.
Construction and Building Materials 107 (2016) 299-306 [7] Talukdar S, Banthia N.
Materials and Structures, 25(1992) 293-304 [4] Park DC.
Construction and Building Materials 22 (2008) 2260-2268 [5] Li G, Dong L, Bai ZA, Lei M, Du JM.
Construction and Building Materials 142 (2017)59-65 [6] Lo TY, Liao WY, Wong CK, Tang W.
Construction and Building Materials 107 (2016) 299-306 [7] Talukdar S, Banthia N.
Online since: June 2021
Authors: An Qing Fu, Cheng Xian Yin, Yan Han, Jing Bin Luo
[2] Yan Han et al., Review of Sour Gas Field on Corrosion Factors and Development Progress[C] Advanced Materials Research. 201-203 (2011) 438-447
[5] HAN Yan, ZHAO Xuehui, ZHANG Juantao, et al., Failure Analysis on Fracture of a 3-1/2″ P110SS Tubing, Advanced Materials Research. 524-527 (2012) 1412-1417
[10] ISO 15156-2-2015, Petroleum and natural gas industries- Materials for use in H2S containing environments in oil and gas production- Part 2: Cracking-resistant carbon and low-alloy steels, and the use of cast irons[S].
Journal of Gansu University of Technology. 2002 28(2): 30-33
New progress in hydrogen-induced cracking and stress corrosion mechanism [J].Progress in natural science. 1991 1(5): 393-399.
[5] HAN Yan, ZHAO Xuehui, ZHANG Juantao, et al., Failure Analysis on Fracture of a 3-1/2″ P110SS Tubing, Advanced Materials Research. 524-527 (2012) 1412-1417
[10] ISO 15156-2-2015, Petroleum and natural gas industries- Materials for use in H2S containing environments in oil and gas production- Part 2: Cracking-resistant carbon and low-alloy steels, and the use of cast irons[S].
Journal of Gansu University of Technology. 2002 28(2): 30-33
New progress in hydrogen-induced cracking and stress corrosion mechanism [J].Progress in natural science. 1991 1(5): 393-399.
Online since: December 2011
Authors: Yu Hou Wu, Qiang Gao, De Hong Zhao
For brittle rock material machining, can achieve using milling to displace grinding under the conditions of high speed.
Table 1 Physical properties physical properties diamond marble (calcium carbonate) density [g/cm3] 3.515 2.93 melting point[℃] 4000 1330 hardness [Gpa] 100 3~4 modulus of elasticity [Gpa] 1.04×1012 5.5×1011 Young modulus [Gpa] 1200 5GPa strength of extension [Gpa] ~3 2~4 fracture toughness [MPam1/2] ~3.4 0.1~0.7 heat conductivity [W/(cmK)] 20(300K) 2.7~3.48 coefficient of thermal expansion ×10-6/K 1.0(300K) 1.85~2.35 Analysis processing technology of the model Using UG/CAD module to create sample models, model sizes is 100mm×120mm, it’s made up of complex NURBUS surfaces, and we select marble as processing materials.
Acknowledgments This paper is supported by National "11th Five-Year" Science and Technology Plan (2006BAJ09B07), Natural science fund of Liaoning(20102186), The innovative team plans of Liaoning Provincial Department of Education(2007T146,2007T47,2008T160), Science and technology plan project of Shenyang (F10-205-1-15), Key laboratory open funded project of Liaoning province(JX-200906).
References [1] Min Zhao.Tools and techniques of stone processing.Publishing House of electronics industry,2009,8 [2] Ai-ling Wang,Liu Yong jiang.Principle and numerical control system of NC.machine press,2006,1 [3] Wang Y,Wang P.Experimental Research on Orthogonal Cutting and Oblique Cutting of Hardened Steel GCr15[J].Key Engineering Materials,2008,375:192-196.
(EI081711224290) [4] BOSHEH S S,MATIVENGA P T.White Layer Formation in Hard Turning of H13 Tool Steel at High Cutting Speeds using CBN Tooling[J].International Journal of Machine Tools&Manufacture,2006,46:225-233
Table 1 Physical properties physical properties diamond marble (calcium carbonate) density [g/cm3] 3.515 2.93 melting point[℃] 4000 1330 hardness [Gpa] 100 3~4 modulus of elasticity [Gpa] 1.04×1012 5.5×1011 Young modulus [Gpa] 1200 5GPa strength of extension [Gpa] ~3 2~4 fracture toughness [MPam1/2] ~3.4 0.1~0.7 heat conductivity [W/(cmK)] 20(300K) 2.7~3.48 coefficient of thermal expansion ×10-6/K 1.0(300K) 1.85~2.35 Analysis processing technology of the model Using UG/CAD module to create sample models, model sizes is 100mm×120mm, it’s made up of complex NURBUS surfaces, and we select marble as processing materials.
Acknowledgments This paper is supported by National "11th Five-Year" Science and Technology Plan (2006BAJ09B07), Natural science fund of Liaoning(20102186), The innovative team plans of Liaoning Provincial Department of Education(2007T146,2007T47,2008T160), Science and technology plan project of Shenyang (F10-205-1-15), Key laboratory open funded project of Liaoning province(JX-200906).
References [1] Min Zhao.Tools and techniques of stone processing.Publishing House of electronics industry,2009,8 [2] Ai-ling Wang,Liu Yong jiang.Principle and numerical control system of NC.machine press,2006,1 [3] Wang Y,Wang P.Experimental Research on Orthogonal Cutting and Oblique Cutting of Hardened Steel GCr15[J].Key Engineering Materials,2008,375:192-196.
(EI081711224290) [4] BOSHEH S S,MATIVENGA P T.White Layer Formation in Hard Turning of H13 Tool Steel at High Cutting Speeds using CBN Tooling[J].International Journal of Machine Tools&Manufacture,2006,46:225-233
Online since: June 2014
Authors: Feng De Tang, Jie Wang, Yan Li Yi
Effects of sewage sludge compost on the physicochemical properties of the aeolian sandy soil
Jie Wang1,2 a, Fengde Tang1 and Yanli Yi2,b
1Colledge of Environmental Sciences,Liaoning University,Shenyang,110036,China
2Colledge of Land and Environment,Shenyang Agricultural University,Shenyang,110866,China
awangjie811226@163.com, bCorresponding Author,yiyanli@126.com
Keywords: Sewage Sludge Compost;Physicochemical Properties ;Soil Fertility
Abstract.
In general, there are three kinds of disposition ways for sewage sludge:ocean disposal which has been prohibited since 1988,burning method and land utilization[5].The sewage sludge contains aboundant nutrient substance of N,P,K and OM,which are the essential elements for the growth of plants.Many studies showed that the addition of organic materials could promote the evolution of benign structure of soil[6],adding organic material to the soil is an important way to improve soil fertility.The use of sewage sludge in agriculture and land reclamation is increasingly identified as an important issue for soil conservation in semi-arid climate zones[7-9].
Materials and Methods Materials The sewage sludge used in the experiment was collected from the Northern Shenyang Wastewater Treatment Plant,the sewage sludge had been treated through aerobic composting.The composted sewage sludge had a loose structure,small bulk density,which could be seen as a good fertilizer.The sewage sludge compost’s characters were:the concentrations of available N,P,K and OM were 4.27 g∙kg-1,174.48 mg∙kg-1,182.50 mg∙kg-1 and 17.7% ,the pH value was 6.40,the electrical conductivity was 4.25 ms∙cm-1.
Chinese Journal of Ecology 23(2004) 86~89 .
Soil Sciences.The Chinese Agric.
In general, there are three kinds of disposition ways for sewage sludge:ocean disposal which has been prohibited since 1988,burning method and land utilization[5].The sewage sludge contains aboundant nutrient substance of N,P,K and OM,which are the essential elements for the growth of plants.Many studies showed that the addition of organic materials could promote the evolution of benign structure of soil[6],adding organic material to the soil is an important way to improve soil fertility.The use of sewage sludge in agriculture and land reclamation is increasingly identified as an important issue for soil conservation in semi-arid climate zones[7-9].
Materials and Methods Materials The sewage sludge used in the experiment was collected from the Northern Shenyang Wastewater Treatment Plant,the sewage sludge had been treated through aerobic composting.The composted sewage sludge had a loose structure,small bulk density,which could be seen as a good fertilizer.The sewage sludge compost’s characters were:the concentrations of available N,P,K and OM were 4.27 g∙kg-1,174.48 mg∙kg-1,182.50 mg∙kg-1 and 17.7% ,the pH value was 6.40,the electrical conductivity was 4.25 ms∙cm-1.
Chinese Journal of Ecology 23(2004) 86~89 .
Soil Sciences.The Chinese Agric.
Online since: April 2014
Authors: Jaroslav Zigo, Karol Balog, Peter Rantuch
Experimental analysis of minimum ignition temperature of dust cloud obtained from thermally modified spruce wood
Jaroslav Zigo1,a*, Peter Rantuch2,b , Karol Balog3,c
1,2,3Slovak University of Technology in Bratislava, Faculty of Materials Science and Technology in Trnava, Institute of Safety, Environment and Quality, Paulínska 16, 917 24, Trnava, Slovakia
ajaroslav.zigo@stuba.sk, bpeter.rantuch@stuba.sk, ckarol.balog@stuba.sk
Keywords: minimum ignition temperature, dust cloud, thermally modified wood, spruce dust
Abstract: This article deals with study of minimum ignition temperature (MIT) of thermally modified spruce dust.
Introduction Wood, a composite of cellulose, hemicelluloses, lignin, and extractives, is commonly used as engineering and structural material.
Material and Methods For this experiment the samples of spruce dust of several different species were mixed, processed by sieve analysis and dried.
As Martinka et al.[12] suggests, it is necessary to examine the influence of the form of material (compact form, dust, and pressed dust).
Balog: Assessment of the impact of heat flux density on the combustion efficiency and fire hazard of spruce pellets, European Journal of Environmental and Safety Sciences Vol 1 (2013) p.24–31 [8] M.
Introduction Wood, a composite of cellulose, hemicelluloses, lignin, and extractives, is commonly used as engineering and structural material.
Material and Methods For this experiment the samples of spruce dust of several different species were mixed, processed by sieve analysis and dried.
As Martinka et al.[12] suggests, it is necessary to examine the influence of the form of material (compact form, dust, and pressed dust).
Balog: Assessment of the impact of heat flux density on the combustion efficiency and fire hazard of spruce pellets, European Journal of Environmental and Safety Sciences Vol 1 (2013) p.24–31 [8] M.