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Online since: July 2013
Authors: Chen Hua She, Zhi Hao Zheng
Although the tool path can be generated by the advanced multi-axis CAD/CAM system, the prices of such systems are very high.
Many advanced CAD/CAM systems have provided the functions to create tool paths for 3+2 machining.
On the other hand, the advanced controller, such as FANUC 31i-A5 [3], provides special function code, such as G68.2, to machine features in the tilted plane easily.
The G68.2 command in the FAUNC advanced controller enables the programming coordinate system to switch to a feature coordinate system.
The authors also would like to thank the Wisdom Engineering Services Corporation for supporting the use of VERICUTÒ Software.
Online since: August 2013
Authors: Zan Li, Qian Wang, Jun Ke, Teng Teng, Yu Fei Zhou, Tian Yun Liu, Zhi Yong Wu, Yong Wei Dong, Wen Ku Shi
We find the calculated results are in good agreement with engineering requirements.
Advanced Materials Research, Vol.584 (2012), p. 357-362 [2] G.S.
Engineering Failure Analysis, Vol.25(2012), p.193-199 [3] G.
Xiu: Design Match of Thrust Rod in Heavy Engineering Truck[J].
Technic Forum (2012)
Online since: July 2007
Every two years SheMet Conference is an interdisciplinary and international forum, encouraging the close cooperation between material scientists, manufacturing and computer engineers and promoting the diffusion of research results and technology transfer in all the areas of Sheet Metal Processing and Characterization.
Nevertheless other more conventional areas, such as bending or stamping, are not neglected: on the contrary dedicated sessions are focused on the most advanced research results in these areas.
Online since: January 1986
PREFACE Mass transport and related kinetic processes in silicate and oxide systems (including minerals, glasses, composites, melts and liquids) are of considerable interest and importance to fields as diverse as Ceramics, Chemistry, the Earth Sciences, Engineering, Materials Science and Physics.
With significant advances in instrumentation, experimental methods, and computer modelling techniques during the last twenty years rapid progress has been made in our understanding of these systems.
To try and breach the artificial subject boundaries and provide a forum for all workers interested in silicates and oxides a conference was held on KINETICS AND MASS TRANSPORT IN SILICATE AND OXIDE SYSTEM in London in September, 1984.
Online since: April 2016
Authors: Hong Wei Liu, Yang Song, Shu Hui Huang, Xi Wu Li, Hong Wei Yan, Bai Qing Xiong, Zhi Hui Li, Yong An Zhang
On purpose of analyzing the relationships among heat treatment process, microstructural features and fracture toughness, 7085 aluminum alloy are chosen to be investigated for its widely used on the structural parts of advanced aircrafts[5,20].
A. 280 (2000) 102-107 [2] Z Li, B Xiong, Y Zhang, et al, Investigation on strength, toughness and microstructure of an Al-Zn-Mg-Cu alloy pre-stretched thick plate in various aging tempers, Journal of Materials Processing Technology. 209 (2008) 2021-2027 [3] AMS 4414, Aluminum alloy, hand forgings 7.5Zn-1.6Cu-1.5Mg-0.12Zr (7085-T7452) solution heat treated, compression stress-relieved, and overaged. (2008) [4] L John, Advanced aluminum and hybrid aero-structures for future aircraft, Mater Sci Forum. 519/521 (2006) 1233-1238 [5] T S Srivatsan, Microstructure, tensile properties and fracture behavior of aluminum alloy 7150, Journal of Materials Science. 27 (1992) 4772-4781 [6] Z Cvijović, M Vratnica, I Cvijović-Alagić, The influences of multiscale-sized second-phase particles on fracture behavior of overaged 7000 alloys.
Procedia Engineering. 1 (2009) 35-38 [7] B Xiong, X Li, Y Zhang, et al, Novel Al-7.5Zn-1.65Mg-1.4Cu-0.12Zr alloys with high strength high toughness and low quench sensitivity, the Chinese Journal of Nonferrous Metals. 19 (2009) 1539-1547 [8] D K Xu, N Birbilis, P A Rometsch, Improved solution treatment for an as-rolled Al–Zn–Mg–Cu alloy: Part II.
alloy (7050), Acta Materialia. 5 (2004) 4503-4516 [15] R T Shuey, F Barlat, M E Karabin, et al, Experimental and analytical investigations on plane strain toughness for 7085 aluminum alloy, Metallurgical and Materials Transactions A. 40 (2009) 365-376 [16] Z Cvijović, M Rantinta M Rakin, Micromechanical modelling of fracture toughness in overaged 7000 alloy forgings, Materials Science and Engineering A. 434 (2006) 339-346
On the relationship between microstructure, strength and toughness in AA7050aluminumalloy, Materials Science and Engineering A. 356 (2003) 326-336 [19] J Buha, R N Lumley, A G Crosky, Secondary aging in an aluminum alloy 7050, Materials Science and Engineering A. 492 (2008) 110 [20] S Y Chen, K H Chen, G S Peng, et al, Effect of heat treatment on hot deformation behavior and microstructure evolution of 7085 aluminum alloy, Journal of Alloys and Compounds.537 (2012) 338-345
Online since: July 2014
Authors: Li Jian Liu
From 1949 to 1990, the average percentage of engineering graduates in all graduates is 17.9%, while the average percentage of that in the whole China is above 30%.
So they hope that there are more students graduate from the majors of engineering and science.
And this is compliant with the 2013 Industry Plan of Fujian province which said that Fujian province should pay more attention to the development of advanced manufacture and take it as center of Fujian’s economy.
And the development of advanced manufacture needs lots of engineering and science talent.[5]So the increase of enrollment of engineering students is actually vital for the economy development of Fujian province and will promote it develop in a higher efficient and healthier way.
Forum of Higher Education (2).
Online since: October 2025
Authors: Vadym Korol, Dmytro Harkavenko, Serhii Fedoriachenko, Bohdan Tsymbal
LS-DYNA, a versatile finite element analysis (FEA), incorporates advanced material models and numerical methods to simulate such complex phenomena.
International Journal of Impact Engineering, 34(3), 452-464
International Journal of Impact Engineering, 49, 1-12
Construction, materials science, mechanical engineering, (96), 95-102
Archives of Materials Science and Engineering, 94/2, 49-54.
Online since: December 2004
Authors: Zhao Liang Jiang, Shi Hong Feng
Materials Science Forum Vols. *** (2004) pp.573-576 online at http://scientific.net Ó 2004 Trans Tech Publications, Switzerland Fine-grained Access Control of PDM and CAPP S.H.
Jiang3,b 1 Department of Computer Science and Technology, Shandong Economic University, Jinan 250014, P.R.China 2 School of Computer Science and Technology, Shandong University, Jinan 250061, P.R.China 3 Mechanical Engineering School, Shandong University, Jinan 250061, P.R.China a shihong@mail.sdu.edu.cn, b jzljeff@163.com Keywords: Security, Attribute certificate, PDM, CAPP, Access control Abstract.
RBAC Advances in Materials Manufacturing Science and Technology 574 creates M:N relationship between user and role for assigning one or many roles to a user, showed in Eq.1.
Role Assignment Server Web Server AC LDAP Server Authentication Module Policy of Access Contorl Role Database PDM/CAPP Server PKC Database Attribute Authority Source of Authority Public Key Certificate Server User Browser Fig.2 The Proposed Operational Model Advances in Materials Manufacturing Science and Technology 576 Conclusions The definition of a fine-grained access control mechanism for protecting data of the integrated PDM and CAPP system becomes an important research field.
After all, it is an immensely systematic engineering involved many different factors, such as hardware, software and so on.
Online since: December 2004
Authors: Hui Wu, S.Y. Yu, Hong Tao Zhu, Bin Lin
Materials Science Forum Vols. *** (2004) pp.144-148 online at http://scientific.net  2004 Trans Tech Publications, Switzerland Molecular Dynamics Simulation on the Mechanism of Nanometric Machining of Single-crystal Silicon H.
Zhu 1,d 1 School of Mechanical Engineering, Tianjin University, Tianjin, 300072, China a wuhui_tju@163.com, blinbinph@hotmail.com, cyusiyuan@eyou.com,d zhuhongtao8516@sina.com Keywords: Molecular dynamics, Simulation, Nanometric cutting, Silicon, Hydrostatic pressure Abstract.
To eliminate the rigid body motion of the specimen and guarantee reasonable heat conduction outwards the specimen, there are Materials Science Forum Vols. *** 145 boundary atoms, which are fixed to the space, and thermostat atoms, which absorb the heat conducts towards the boundary; surround the Newtonian atoms of silicon.
Advances in Materials Manufacturing Science and Technology 146 Table 1 Parameters in Tersoff potential for silicon parameter value A[eV] 1.8308×10 3 B[eV] 4.7118×10 2 S[nm] 0.3 R[nm] 0.27 λ[nm -1] 2.4799 μ[nm -1] 1.7322 β 1.1000×10 -6 n 0.78734 c 1.0039×10 5 d 16.217 h -0.59825 Morse potential is shown below
Advances in Materials Manufacturing Science and Technology 148 Conclusions With the aid of the molecular dynamics simulation, some fundamental problems of mechanics associated with the nanometric cutting of single-crystal silicon are investigated in the paper.
Online since: December 2004
Authors: Wan Sheng Zhao, Zhen Long Wang, Yu Fang, L.H. Li
Materials Science Forum Vols. *** (2004) pp.750-754 online at http://scientific.net Ó 2004 Trans Tech Publications, Switzerland A Surface Modification Method by EDM and Its Application to Cutting Tools W.S.
In the process of EDM, the substances of which the electrode is constructed are to be cross the gap region between the electrode and the workpiece and be attached to the surface of workpiece quickly under Fig.1 Principle of EDM Surface Modification Electrode Kerosene Power supply Clamp Workpiece Sparkle - + TiC Coating Fig.2 Micrograph of cross section of layer Layer Matrix Materials Science Forum Vols. *** 751 high temperature.
The definition of energy density is: (3) E - energy density (J/m²) n - times of discharge t - duty factor (%) A - machining area (m2) to - discharge interval (µs) t - machining time (s) Attiu A tt t tiu Antiu AnWE ee 0i iee iee M ⋅⋅⋅= + ⋅⋅⋅= ⋅⋅⋅= ⋅=Advances in Materials Manufacturing Science and Technology 752 The basic machining parameters are shown in Table 1.
Fig.3 Relation between wear length and energy density Machining area 100mm 2 0 100 200 300 400 500 0 10 20 30 40 50 60 Energy density (106 J/m 2 ) Wear length (µm) No.1 No.2 No.3 No.4 No.5 No.6 Fig.4 Relation between wear length and energy density A=25mm 2 A=100mm2 A=225mm 2 No.1 No.4 A=25mm 2 A=100mm 2 A=225mm 2 Energy density (106 J/m 2 ) Wear length (µm) 0 100 200 300 400 500 0 10 20 30 40 50 60 Materials Science Forum Vols. *** 753 Fig.6 and Fig.7 show the relation between average thickness and machining time using machining conditions No.3 and No.6 with different machining area.
Chu: Tool Engineering Vol.34(2) (2000), p. 3 [2] W.S.
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