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Effect of Welding Processes and Consumables on Tensile and Impact Properties of High Strength Quenched and Tempered Steel Joints

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Journal of Iron and Steel Research International 2008年第6期15卷 87-94页

作者： G Magudeeswaran V Balasubramanian G Madhusudhan Reddy T S Balasubramanian Center for Advanced Materials Joining and Research(CEMAJOR) Department of Manufacturing EngineeringAnnamalai University Metal Joining Section Defence MetallurgicalResearch Laboratory Special Vehicles Division Combat Vehicles Research and Development Establishment

Quenched and tempered steels are prone to hydrogen induced cracking in the heat affected zone after welding. The use of austenitic stainless steel consumables to weld the above steel was the only available remedy because of higher solubility for hydrogen in austenitic phase. In this investigation, an attempt was made to determine a suitable consumable to replace expensive austenitic consumables. Two different consumables, namely, austenitie stain less steel and low hydrogen ferritic steel, were used to fabricate the joints by shielded metal are welding （SMAW） and flux cored arc welding （FCAW） processes. The joints fabricated by using low hydrogen ferritic steel consumables showed superior transverse tensile properties, whereas joints fabricated by using austenitic stainless steel consumables exhibited better impact toughness, irrespective of the welding process used. The SMAW joints exhibited superior mechanical and impact properties, irrespective of the consumables used, than their FCAW counterparts.

关键词： shielded metal arc welding process flux cored arc welding process austenitie stainless steel low hydro gen ferritic steel transverse tensile property impact toughness

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Two dimensional dynamic stability for reconfigurable robots designed to traverse rough terrain

Two dimensional dynamic stability for reconfigurable robots ...

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2008 IEEE/RSJ International Conference on Intelligent Robots and Systems

作者： Blake Beckman Jeff Pieper David Mackay Michael Trentini David Erickson Autonomous Intelligent Systems Section Defence Research and Development Canada Canada Department of Mechanical and Manufacturing Engineering University of Calgary Calgary AB Canada

ISBN: (纸本)9781424420575

Robots must be designed with consideration for reconfiguring body pose during operation if they are to address more challenging environments. Researchers have mostly relied on static stability methods to monitor the possibility of rollover in stationary or slow moving vehicles. However, little research in dynamic stability is being conducted for robots capable of reconfiguring their pose to overcome obstacles encountered in challenging terrains. A multi-degree-of-freedom robot with the capability to vary its center of gravity is discussed in this paper. It is designed to improve mobility over rough terrain and is used in this paper as an example to address one aspect of dynamic stability. A complete understanding of the dynamic behaviour of a multiple degree of freedom robot in unstructured terrain is a difficult problem to solve. It is too complex to solve completely and therefore a reduced aspect of the problem is addressed. The robot will only have the ability to vary its center of gravity in the plane parallel to its direction of forward motion. In addition the robot will only move on flat terrain and encounter an immovable linear step feature. The result of the research is that once the center of gravity is specified by selection of robot body pose, and a maximum obstacle considered, platform stability can be ensured with a maximum allowable velocity. In other words, a maximum allowable velocity of the robot is governed by the position of the center of gravity relative to the wheel in contact with the linear step feature. If the robot is traveling below the predetermined maximum velocity then the robot is guaranteed to remain upright.

关键词： Robots Mobile robots Tires Wheels Vehicles Knee Hip

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Research on advanced diesel aftertreatment devices

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Review of Automotive engineering 2006年第3期27卷 395-399页

作者： Hara, Shinji Oyama, Koji Kakegawa, Toshiaki Senbokuya, Shigeo Nakamura, Qsamu Shibuya, Masahiko Itoyama, Hiroyuki Okada, Masanori Sugiyama, Gen Hasegawa, Tsutomu Group No. 5 Engine Component Dept. No. 2 Isuzu Motors Limited 8 Tsuchidana Fujisawa Kanagawa 252-8501 Japan Fuel Products R and D Group Fuel Research Laboratory Research and Development Division 8 Chidoricho Naka-ku Yokohama Kanagawa 231-0815 Japan Technical Liaison Dept. Development Management Division Hino Motors Ltd. 3-1-1 Hino-dai Hino Tokyo 191-8660 Japan Fuel Quality Technology Section Manufacturing Department Idemitsu Kosan Co. Ltd. 1280 Kami-humi Sodegaura Chiba 299-0293 Japan Fuels and Process Division Research Center TonenGeneral Sekiyu K.K. 6-1 Ukishima-cho Kawasaki-ku Kawasaki Kanagawa 210-9526 Japan Oil Products Development Section Research and Development Division Showa Shell Sekiyu K.K. 2-3-2 Daiba Minato-ku Tokyo 135-8074 Japan Components Engineering Group Engine Engineering Department No. 3 Powertrain Engineering Division 6-1 Daikoku-cho Tsurumi-ku Yokohama Kanagawa 230-0053 Japan Quality Audit Department Engine Administration Division Power Train Development Group 1 Toyota-cho Toyota Aicht 471-8572 Japan Engine and Environmental Research Division Japan Automobile Research Institute 2530 Karima Tsukuba Ibaraki 305-0822 Japan Fuel Research Laboratory Advanced Technology and Research Institute Japan Petroleum Energy Center 1-4-10 Ohnodai Midori-ku Chiba Chiba 267-0056 Japan

This article reports the effects of fuel sulfur on advanced diesel emission aftertreatment devices as tested by the JCAPII Diesel WG For a Urea SCR system, the NOx emissions reduction performance was compared at low exhaust gas temperature ranges with and without an oxidation catalyst installed in front of the SCR catalyst. For a NOx storage reduction catalyst system, the effect of fuel sulfur content on exhaust emissions and fuel economy during 50,000km driving was examined. © 2006 Society of Automotive Engineers of Japan, Inc. All rights reserved.

关键词： Urea

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Color appearance of a scene under automotive headlamp light

Color appearance of a scene under automotive headlamp light

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International Congress and Exposition

作者： Kitagawa, Mamoru Abe, Toshimi Product Development Dept. Koito Manufacturing Co. Ltd Japan Optical Section Engineering Dept. Koito Manufacturing Co. Ltd Japan

It is believed that the driver's color appearance in his visual field illuminated by the headlamps at night is similar to the mesopic vision. In this study, therefore, we attempted to experimentally clarify how colors are appeared when the headlamps are turned on at night. Processing the results of this experiment with a color engineering technology, we attempted to reproduce the color appearance of scene during nighttime driving. The purpose of this study was to reproduct the appearance of colors during nighttime driving on the basis of ones in the daytime. By this reproduction, the night driving safety and the visibility of the headlamp evaluation are expected to be improved. Copyright © 1999 Society of Automotive Engineers, Inc.

关键词： Color

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development of a new high-strength grade of SUMIDIA DA 2200

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SEI Technical Review 1998年第45期 107-111页

作者： Kanada, Yasuyuki Mizusuna, Hirofumi Fukaya, Tomohiro Shiraishi, Junichi Nakamura, Tsutomu Yamaguchi, Akira Tomita, Kunihiro Nakai, Tetsuo Tool Engineering Department Super Hard Materials Division Sumiden Tech. Service Co. Material Development Section Tool Engineering Department Super Hard Materials Division Japan Production Engineering Section Manufacturing Department Super Hard Materials Division Analytical Characterization Center Japan Tool Engineering Section Tool Engineering Department Super Hard Materials Division

Polycristalline Diamond (PCD) cutting tools are widely used for cutting non-ferrous metals, wood, and inorganic materials. Previously, PCD tools were used solely to finish the workpieces used in automotive parts, since PCD was too weak to withstand the high cutting force involved in rough cutting. The high strength of the new grade of PCD `SUMIDIA DA 2200' is almost equal to that cemented carbide, and eliminates breakage of the cutting edge even under the most severe cutting conditions. This paper describes the characteristics and cutting performance of SUMIDIA DA 2200, and provides application examples.

关键词： Diamond cutting tools

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Transient analysis of impact ionization anisotropy using realistic band structure for GaAs

Transient analysis of impact ionization anisotropy using rea...

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International Workshop on Computational Electronics

作者： H.K. Jung H. Nakano K. Taniguchi Department of Electronic Engineering Kunsan National University Kunsan South Korea Development Section I RF Semiconductor Products Department Circuit Products Division Murata Manufacturing Company Limited Yasu Shiga Japan Department of Electronics and Information Systems Osaka University Suita Osaka Japan

We have investigated anisotropic properties for impact ionisation of GaAs using Monte Carlo simulation and a realistic energy band structure. The realistic energy band structure is derived from the empirical pseudopotential method and impact ionisation scattering rates are calculated by Fermi's golden rule. For observing anisotropic properties of impact ionisation coefficients, a Monte Carlo simulation has been performed after electric fields are applied along different directions.

关键词： Transient analysis Impact ionization Anisotropic magnetoresistance Gallium arsenide Scattering Electrons Radio frequency Circuits Information systems Hot carriers

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Developing a prototype concurrent design tool for composite topside structures

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NAVAL ENGINEERS JOURNAL 1997年第3期109卷 279-290页

作者： Dirlik, S Hambric, S Azarm, S Marquardt, M Hellman, A Bartlett, S Castelli, V Steve Dirlik:began his career at the Naval Surface Warfare Center Carderock Division in 1981 as an aerospace engineer co-op student. He completed his bachelor of science degree in aeropace and ocean engineering from Virginia Polytechnic Institute and State University in 1985 and his master of science degree in aerospace engineering from the University of Maryland in 1990. Mr. Dirlik recently completed a master of science program in applied physics at The Johns Hopins University and currently works in the Radar Cross Section and Target Physics Branch of the Signatures Directorate at the Naval Surface Warfare Center Corderoke Division. He has worked on Navy low observable programs since 1990. Stephen Hambric:is a research associate at the Applied Research Laboratory at The Pennsylvania State University. He received his B. S. and M.S. degree in mechanical engineering from Virginia Polytechnic Institute and State University and his D. Sc. in mechnical engineering from the George Washington University. He has worked on several computer aided multidiscikplinary design and optimization projects over the years including an automated propeller design system and a structural acoustic optimization capability. Dr. Shpour Azarm:is currently working as an associate professor with the Design and Manufacturing Group of the Department of Mechanical Engineering at the University of maryland at College Park. Dr Azarm's expertise is in the areas of optimization-based designed and concurrent design and optimization of multidisciplinary systems. He was a consultant at Black & Decker Corporation (summer 1996) and worked as a Navy senior summer faculty fellow (summer 1995) and a NASA summer faculty fellow (summer 1994). He was a visiting scientist at NASA Langley Research Center for Multidisciplinary Analysis and Applied Structural Optimzatiom at the University of Siegen in Germany (spring 1992) and the Design Institute of the Technical University of Denmark (summer 1990). Dr Azarm was an associate technical editor of the ASME Jour

A prototype concurrent engineering tool has been developed for the preliminary design of composite topside structures for modern navy warships. This tool, named GELS for the Concurrent engineering of Layered Structures, provides designers with an immediate assessment of the impacts of their decisions on several disciplines which are important to the performance of a modern naval topside structure, including electromagnetic interference effects (EMI), radar cross section (RCS), structural integrity, cost, and weight. Preliminary analysis modules in each of these disciplines are integrated to operate from a common set of design variables and a common materials database. Performance in each discipline and an overall fitness function for the concept are then evaluated. A graphical user interface (GUI) is used to define requirements and to display the results from the technical analysis modules. Optimization techniques, including feasible sequential quadratic programming (FSQP) and exhaustive search are used to modify the design variables to satisfy all requirements simultaneously. The development of this tool, the technical modules, and their integration are discussed noting the decisions and compromises required to develop and integrate the modules into a prototype conceptual design tool.

关键词： Warships

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Royal Academy of Medicine in Ireland section of Biomedical Sciences

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Irish Journal of Medical Science 1997年第3期166卷 157-194页

作者： W. Ruddock D. M. Burns J. C. W. Brown J. M. Allen D. G. Hirst G. P. Love A. K. Keenan C. Lally A. Bird M. P. Ryan N. O’Connor K. M. O’Boyle J. G. McGeown J. G. McCarron R. M. Drummond F. S. Fay T. J. Connor J. P. Kelly B. E. Leonard L. Gilmartin G. O’Cuinn C. MacDonncha A. W. S. Watson S. McGrath K. J. Brady H-C. McKillen C. W. Taylor S. K. Smith S. Thornton A. D. Martin J. R. Bailie S. R. McKeown C. A. Higgins W. J. Hatton G. McKerr D. Harvey J. Carson B. M. Hannigan D. M. P. Morrow H. McGlynn C. M. G. Thompson C. Higgins E. S. Galligan M. M. Murray J. L. Leckey G. B. Nevin D. S. Soppitt M. H. Esfandiary W. S. Gilmore T. Robson T. Dineen A. Greer J. A. Houghton K. D. O’Halloran A. Bradford M. McGuire M. MacDermott A. Coogan J. J. O’Connor C. S. Regan A. M. Redmond A. Harkin A. S. Lowe G. D. Baxter G. D. Kennovin M. Leek O. P. Friery M. V. Hejmadi L. H. Patterson J. Robinson I. Hill J. Kilbride K. D. Cotton M. A. Hollywood N. G. McHale K. D. Thornbury C. P. Halligan D. P. O’Connell B. J. Harvey P. Fanning A. O’Farrell D. Cantillon J. F. Cryan D. O’Leary D. T. O’Malley A. Nolan A. P. Moran K. A. Fitzgerald L. A. J. O’Neill A. McElligott A. H. Baker K. M. Joyce T. Ruane W. J. Hall F. Markos M. F. Carey C. Galvin E. R. Perl A. K. Curran C. Connolly K. Abdullah J. R. Docherty K. T. Gavin M. Browne C-A. Frazer D. M. Walsh S. Atkinson D. Brown J. M. O’Connor G. R. Wasson M. P. Bonham V. J. McKelvey-Martin J. J. Strain C. S. Downes T. M. Dineen R. Powell B. Van Hemelrijk T. Mubarak Abujaffom B. Caulfield M. Garrett L. Brennan M. J. Griffin A. J. McShane P. N. Convery K. R. Milligan P. Quinn K. Scott J. P. H. Fee M. Cashman A. Dunne E. Healy J. Walsh A. J. Watson G. Noble D. P. Campion B. F. Leek J. P. Ryan T. Quinn M. Dumbleton K. M. Smith J. C. McGrath J. B. Macmillan L. Doherty F. Lynch M. Sweeney R. G. O’Regan P. McLoughlin R. A. Padua S. Dudeney J. O’Byrne R. Moran K. U. O’Kelly B. A. O. McCormack C. G. Lyons C. L. Brady C. Simms S. Maher B. Schreiber D. Taylor A. J. Carr B. Higgins G. J. Dempsey S. Z. Imam M. Harbi Radiation Science Group School of Biomedical Sciences University of Ulster at Jordanstown Newtownabbey Co. Antrim N. Ireland Biotherapeutics Group School of Biomedical Sciences University of Ulster at Jordanstown Newtownabbey Co. Antrim N. Ireland Rehabilitation Sciences Research Group Schools of Health Sciences University of Ulster Jordanstown Northern Ireland Rehabilitation Sciences Research Group Schools of Health Sciences and Biomedical Sciences University of Ulster Jordanstown Northern Ireland Cancer and Aging Research Group School of Biomedical Sciences University of Ulster Coleraine Northern Ireland Radiation Science Research Group School of Biomedical Sciences University of Ulster at Jordanstown Newtownabbey Co. Antrim N. Ireland Radiation Sciences and Rehabilitation Sciences Research Groups. Schools of Health Sciences University of Ulster at Jordanstown Northern Ireland Radiation Sciences and Rehabilitation Sciences Research Groups. Schools of Health Biomedical Sciences University of Ulster at Jordanstown Northern Ireland Department of Pharmacology University College Dublin Belfield Dublin 4 Pharmacology Department University College Dublin Belfield Dublin 4 School of Biomedical Sciences University of Ulster at Coleraine Northern Ireland School of Applied Biological & Chemical Sciences University of Ulster at Coleraine Northern Ireland Department of Pharmacology University College Dublin Belfield Dublin 4 School of Biomedical Science Queen’s University of Belfast UK Institute of Biology and Life Sciences University of Glasgow UK UMass Medical Center Biomedical Imaging Group Massachusetts USA Department of Pharmacology University College Galway Ireland Department of Pharmacology University College Galway Department of Biochemistry University College Galway Department Life Sciences Regional Technical College Galway Growth and Development Research Centre University of Limerick Ireland Sports Injuries Research Centre University of Limerick Irel

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Application of practical fuzzy-PID hybrid control system to petrochemical plant

Application of practical fuzzy-PID hybrid control system to ...

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IEEE International Conference on Fuzzy Systems (FUZZ-IEEE)

作者： T. Tani M. Umano M. Utashiro K. Tanaka Maintenance & System Development Section Manufacturing Department Idemitsu Kosan Company Limited Tokyo Japan Institute of Information Technology Information Systems Department Idemitsu Kosan Company Limited Tokyo Japan Department of Systems Engineering Faculty of Engineering Scicnce Osaka University Osaka Japan Department of Mechanical Systems Engineering Kanazawa University Kanazawa Japan

Presents a practical method of control using conventional PID and fuzzy control, where the output of fuzzy reasoning compensates for the output of PID control directly. This method of control applies to control of the top temperature (temperature of the stripper top) of a petrochemical plant. It is shown that the proposed system can control the top temperature effectively in both steady state and in transient state, such as in feed oil switching.< >

关键词： Control systems Petrochemicals Petroleum Temperature control Three-term control Feeds Temperature sensors Fuzzy reasoning Hydrogen Fuzzy control

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Application of neural network to tank level control of petrochemical plants

Application of neural network to tank level control of petro...

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International Conference on Industrial Electronics, Control and Instrumentation

作者： T. Tani M. Umano T. Sato K. Tanaka Manufacturing Department Maintenance & System Development Section Idemitsu Kosan Company Limited Japan Institute of Information Technology Information System Department Idemitsu Kosan Company Limited Japan Faculty of Engineering Department of Precision Engineering Osaka University Japan Faculty of Engineering Department of Mechanical Systems Engineering Kanazawa University Japan

This paper presents a control system for petrochemical plants using neural networks. Neural networks effectively simulate a well-experienced operator's procedure to control the tank level of the plant even in a transient state such as feed oil switching. This control system is applied to tank level control of a desulfurizing plant during feed oil switching, it can control the level effectively.< >

关键词： Neural networks Level control Petrochemicals Petroleum Feeds Control systems Temperature Inductors Switches Modeling

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