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Journal of Biosciences 1999年第1期24卷 33-198页

作者： N. Manoj V. R. Srinivas A. Surolia M. Vijayan K. Suguna R. Ravishankar R. Schwarzenbacher K. Zeth Diederichs G. M. Kostner A. Gries P. Laggner R. Prassl Madhusudan Pearl Akamine Nguyen-huu Xuong Susan S. Taylor M. Bidva Sagar K. Saikrishnan S. Roy K. Purnapatre P. Handa U. Varshney B. K. Biswal N. Sukumar J. K. Mohana Rao A. Johnson Vasantha Pattabhi S. Sri Krishna Mira Sastri H. S. Savithri M. R. N. Murthy Bindu Pillai Kannan M. V. Hosur Mukesh Kumar Swati Patwardhan K. K. Kannan B. Padmanabhaa S. Sasaki-Sugio M. Nukaga T. Matsuzaki S. Karthikevan S. Sharma A. K. Sharma M. Paramasivam P. Kumar J. A. Khan S. Yadav A. Srinivasan T. P. Singh S. Gourinath Neelima Alam A. Srintvasan Vikas Chandra Punit Kaur Ch. Betzel S. Ghosh A. K. Bera S. Bhattacharya S. Chakraborty A. K. Pal B. P. Mukhopadhyay I. Dey U. Haldar Asok Baneriee Jozef Sevcik Adriana Solovicova K. Sekar M. Sundaralingam N. Genov Dong-cai Liang Tao Jiang Ji-ping Zhang Wen-rui Chang Wolfgang Jahnke Marcel Blommers S. C. Panchal R. V. Hosur Bindu Pillay Puniti Mathur S. Srivatsun Ratan Mani Joshi N. R. Jaganathan V. S. Chauhan H. S. Atreya S. C. Sahu K. V. R. Chary Girjesh Govil Elisabeth Adjadj Éric Quinjou Nadia Izadi-Pruneyre Yves Blouquit Joël Mispelter Bernadette Heyd Guilhem Lerat Philippe Milnard Michel Desmadreil Y. Lin B. D. Nageswara Rao Vidva Raghunathan Mei H. Chau Prashant Pesais Sudha Srivastava Evans Coutinho Anil Saran Leizl F. Sapico Jayson Gesme Herbert Lijima Raymond Paxton Thamarapu Srikrishnan C. R. Grace G. Nagenagowda A. M. Lynn Sudha M. Cowsik Sarata C. Sahu S. Chauhan A. Bhattacharya G. Govil Anil Kumar Maurizio Pellecchia Erik R. P. Zuiderweg Keiichi Kawano Tomoyasu Aizawa Naoki Fujitani Yoichi Hayakawa Atsushi Ohnishi Tadayasu Ohkubo Yasuhiro Kumaki Kunio Hikichi Katsutoshi Nitta V. Rani Parvathy R. M. Kini Takumi Koshiba Yoshihiro Kobashigawa Min Yao Makoto Demura Astushi Nakagawa Isao Tanaka Kunihiro Kuwajima Jens Linge Seán O. Donoghue Michael Nilges G. Chakshusmathi Girish S. Ratnaparkhi P. K. Madhu R. Varadarajan C. Tetreau Molecular Biophysics Unit Indian Institute of Science Bangalore India Austrian Academy of Sciences Institute of Biophysics and X-ray Structure Research Graz Austria Faculty of Biology University of Konstanz Germany Institute of Medical Biochemistry University of Graz Austria Howard Huges Medical Institute Department of Chemistry & Biochemistry University of California La Jolla USA Department of Chemistry & Biochemistry University of California San Diego La Jolla USA Molecular Biophysics Unit India Department of Microbiology &Cell Biology Indian Institute of Science Bangalore India Macromolecular Structure Laboratory NCI - Frederick Cancer Research and Development Center ABL - Basic Research Program Frederick USA Department of Crystallography and Biophysics University of Madras Chennai Biochemistry Department Indian Institute of Science Bangalore India Condensed Matter Physics Division B.A.R.C. Trombay Mumbai Condensed Matter Physics Division Bhabha Atomic Research Centre Trombay Mumbai IMCB The University of Tokyo Tokyo Japan Mitsubishi Chemical Corporation Yokohama Research Center Yokohama Japan Faculty of Pharmaceutical Sciences Chiba University Chiba Japan Department of Biophysics All India Institute of Medical Sciences New Delhi India Department of Biophysics All India Institute of Medical sciences New Delhi India Institüt Physiologische Chemie Hamburg Germany Biophysics Department Bose Institute Calcutta India Slovak Academy of Sciences Institute of Molecular Biology Bratislava Slovakia Indian Institute of Science Bioinformatics Centre Bangalore Departments of Chemistry and Biochemistry Biological Macromolecular Structure Center USA Bulgarian Academy of Sciences Institute of Organic Chemistry Sofia Bulgaria Chinese Academy of Sciences Institute of Biophysics Beijing China Novartis Pharma AG Preclinical Research Basel Switzerland Department of Chemical Sciences Tata Institute of Fundamental Research Mumbai India Solid State Physics Div

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Erratum: ‘‘Optical investigation of quaternary GalnAsSb/AlGaAsSb strained multiple quantum wells’’ [Appl. Phys. Lett. 67, 3432 (1995)]

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Applied Physics Letters 1996年第18期68卷 2591-2591页

作者： W. Z. Shen S. C. Shen W. G. Tang Y. Zhao A. Z. Li CCAST (World Laboratory) P.O. Box 8730 Beijing 100080 National Laboratory for Infrared Physics Shanghai Institute of Technical Physics Shanghai 200083 Center of Advanced Science and Technology of Microstructures Nanjing 210008 People's Republic of China Department of Functional Materials for Informatics Shanghai Institute of Metallurgy Shanghai 200050 People's Republic of China

W. Z. Shen, S. C. Shen, W. G. Tang, Y. Zhao, A. Z. Li, W. Z. Shen, S. C. Shen, W. G. Tang, Y. Zhao, A. Z. Li; Erratum: ‘‘Optical investigation of quaternary Gal

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TORQUE TRANSMISSION CAPABILITIES OF ADHESIVELY BONDED TUBULAR LAP JOINTS FOR composite DRIVE SHAFTS

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composite STRUCTURES 1995年第2期30卷 229-240页

作者： KIM, WT LEE, DG Laboratory for Advanced Composite Materials Department of Precision Engineering and Mechatronics Korea Advanced Institute of Science and Technology Kusong-dong Yusong-ku Taejon-shi 305- 701 Korea

The stresses and torque transmission capabilities of adhesively bonded circular, hexagonal and elliptical lap joints were analyzed by the three-dimensional finite element method and compared with the experimental results. The adherends of the joints were composed of carbon fiber epoxy composite shafts and steel shafts. In calculating the torque transmission capabilities, the linear laminate properties of the composite material and the nonlinear shear properties of the adhesive were used. Using this method, the torque transmission capabilities of the adhesively bonded lap joints could be calculated accurately, except the circular and the hexagonal single lap joints whose adherends were failed by bulging when the composite adherends had small stacking angles from the shaft axis. The experiments revealed that the hexagonal joint had the best torque transmission capability among the single lap joints, and the double lap joint had better torque transmission capability than the single lap joint. The torque transmission capability of the hexagonal single lap joint was found to be comparable to that of the circular double lap joint.

关键词： Adhesive joints

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DEVELOPMENT OF A STRENGTH MODEL FOR THE COCURED STEPPED LAP JOINTS UNDER TENSILE LOADING

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composite STRUCTURES 1995年第1-4期32卷 593-600页

作者： KIM, HS LEE, SJ LEE, DG Mechanical Design Laboratory with Advanced Composite Materials Department of Mechanical Engineering Korea Advanced Institute of Science and Technology Kusong-dong Yusong-gu Taejon-shi Korea 305-701

The cocured stepped lap joints for composite structures were manufactured and tested under static and fatigue tensile loads. From the tests, it was found that the joints were shear-failed at the joining interfaces. As the length of the stepped lap of the joint increased, the average static tensile strength of the joint increased, while the average static shear strength decreased in proportion to the length of the stepped lap of the joint. The fatigue endurance limit was found to be 30-40% of the static strength. Also, the cocured stepped lap joints were manufactured by curing plies laid-up on the composite plates which had machined stepped laps. The static strength of the joints manufactured by the latter method was found to be 70-80% of the static strength of the joints manufactured without machining and the fatigue endurance limit was found to be about 25% of the static strength.

关键词： Joints (structural components)

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DESIGN AND MANUFACTURE OF THE composite FLEXSPLINE OF A HARMONIC DRIVE WITH ADHESIVE JOINING

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composite STRUCTURES 1994年第3期28卷 307-314页

作者： OH, HS JEONG, KS LEE, DG [a]Laboratory for Advanced Composite Materials Department of Precision Engineering Mechatronics Korea Advanced Institute of Science Technology Kusong-dong Yusong-gu 305-701 South Korea

The harmonic drive, which is composed of a circular spline, a wave generator and a flexspline, is a compact, light-weight, and precise torque transmission mechanism with little backlash. From these components, the flexspline is the key element for motion transmission. It must be flexible in the radial direction but stiff in the tangential direction to accurately transmit rotational motion. In order to satisfy this dual role, the conventional steel flexspline is usually manufactured as a thin cup shape which requires a large amount of machining using special jigs. Because of the thin cup shape, the steel flexspline produces noise and vibration when operated at high speed. Since the dual role cannot be satisfied effectively with conventional isotropic materials, anisotropic composite materials have been considered. In this paper the cup section of the flexspline was manufactured with carbon-fiber epoxy composite material and the tooth section using steel. Then the two components were joined by adhesive bonding. Also, in order to make the manufacture of the steel flexspline easy and reduce the noise and vibration of the harmonic drive, the cup and tooth sections were manufactured separately and adhesively bonded. The static torque transmission capabilities and the vibration characteristics of the composite flexspline with adhesively bonded steel teeth and the steel flexspline with adhesively bonded steel teeth were experimentally tested. From these tests it was found that the flexspline manufactured with adhesive bonding had sufficient torque transmission capabilities and both the composite flexspline and the bonded steel flexspline had better dynamic characteristics than the conventional one-piece steel flexspline.

关键词： Transmissions

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Electrical conductivity and physical properties of poly(dipropargylsilane derivatives) doped with electron acceptors

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Journal of Macromolecular science, Part A 1992年第7期29卷 589-597页

作者： Kim, Yun-Hi Choi, Sam-Kwon Kwon, Soon-Ki Gal, Yeong-Soon Department of Chemistry Korea Advanced Institute of Science and Technology Seoul South Korea Department of Polymer Science and Engineering Kyeongsang National University Jinju South Korea Composite Material Laboratory Agency for Defense Development Daejeon South Korea

Films of poly(dipropargylsi1ane derivatives) were easily prepared by solvent casting. The resulting red-black films were relatively flexible and ductile. By doping with electron acceptors, the electrical conductivity increased up to the order of 10-'-lOo S/cm. The activation energy for the conduction of doped film was 4 kcal/mol. The change in Raman, IR, and UV-visible spectra by doping suggests electron transfer from the poly(dipropargylsi1ane derivatives) to the dopant, leading to the formation of polaron. It also was observed that doping with Iz drastically destroys the crystallinity of the polymer. © 1992, Taylor & Francis Group, LLC. All rights reserved.

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FLAMMABILITY AND TOXICITY OF composite-MATERIALS FOR MARINE VEHICLES

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NAVAL ENGINEERS JOURNAL 1990年第5期102卷 45-54页

作者： SEVART, JL GRIFFIN, OH GURDAL, Z WARNER, GA Jeffrey L. Sevart:is a native of Kansas and a 1985 graduate of Kansas State University with a B.S. in mechanical engineering (magna cum laude). After working as a stress analysis engineer at Boeing Military Airplane Company in Wichita Kans. he attended Virginia Polytechnic Institute and State University and received an M.S. in engineering mechanics in February 1988. He currently resides in Akron Ohio working as a research engineer in tire composites research at The Goodyear Tire and Rubber Company. O. Hayden Griffin Jr.:received his B.S. and M.S. in mechanical engineering from Texas Tech University in 1970 and 1971 respectively. He received his Ph.D. in engineering mechanics from Virginia Polytechnic Institute and State University in 1980. Prior to joining the faculty of Virginia Polytechnic Institute and State University as associate professor of engineering science and mechanics in September 1985 he was employed at the U.S. Naval Surface Warfare Center (Dahlgren Virginia) BF Goodrich Tire Group (Akron Ohio) the Bendix Advanced Technology Center (Columbia Maryland) and the Johns Hopkins University Applied Physics Laboratory (Laurel Maryland). He is currently an associate director of the Virginia Institute for Material Systems. He is a registered professional engineer in Virginia and is a member of the American Society of Mechanical Engineers and the American Society for Composites. Zafer Gürdal:received his M.S. in mechanical and aerospace engineering from Illinois Institute of Technology in 1981 and his Ph.D. in aerospace engineering from Virginia Polytechnic Institute and State University in 1985. He worked as a research associate in the Aerospace and Ocean Engineering Department at Virginia Tech before joining the Engineering Science and Mechanics Department as an assistant professor in September 1985. Professor Gürdal's research interests include: composite structures failure mechanics of composites structural optimization and damage tolerant design. He is a member of the American Institute

Characteristics of both thermoplastic and thermoset composite materials as they pertain to marine vehicle applications are discussed. Comparison of various material selection factors such as strength, damage and moisture resistance, and flammability and toxicity as well as cost and availability of thermoset and thermoplastic composite materials are presented. Methods for testing and reducing the flammability and toxicity are discussed. Many commercially available composite systems are reported to provide favorable characteristics for marine applications. Although there seems to be a need for improved production technology for thermoplastics, they present potential advantages in physical properties over thermoset composites.

关键词： composite Materials

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A FIBER OPTIC-SYSTEM FOR DAMAGE ASSESSMENT OF FRP composite STRUCTURES

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NAVAL ENGINEERS JOURNAL 1984年第6期96卷 52-56页

作者： CRANE, RM MACANDER, AB Roger M. Crane:isa materials engineer in the Ship Materials Engineering Department of the David W. Taylor Naval Ship Research and Development Center (DTNSRDC) Annapolis Md. He is presently involved in the development of fiber reinforced advanced composite materials for various naval applications. He received his B.S. degree in physics/engineering and his B.A. degree in mathematics: physical applications from Loyola College. He has finished his course work for his M.S. degree in materials science at the University of Delaware and is currently enrolled at the Johns Hopkins University. Mr. Crane is a member of Society of Experimental Stress Analysis and the Society of Physics Students. Aleksander B. Macander:is a materials engineer in the Ship Materials Engineering Department DTNSRDC Annapolis Md. He is presently involved in the development of fiber reinforced advanced composite materials for various naval applications. Prior to joining DTNSRDC in 1973 he was associated with the Johns-Manville Corporation Denver Colo and also with the Naval Applied Science Laboratory Brooklyn N.Y. He received his B.S. degree in mechanical engineering from Fairleigh Dickinson University and his M.S. degree in mechanical engineering (plastics) from Stevens Institute of Technology. Mr. Macander is a member of ASTM the Severn Technical Society and the International Organization for Standardization/Technical Committee 61 on Plastics.

There are a limited number of nondestructive techniques available for field inspection of large composite structures and practically none for inservice inspection. An innovative damage assessment system is proposed which uses an optical fiber mesh implanted into the body of a fiber reinforced composite structure. This mesh would become an integral part of the structure on fabrication. The selection of the mesh fibers would be predicated on their strain to failure characteristics and strain compatibility with the base composite reinforcing fibers. This optical system will be capable of locating damage, assessing severity and monitoring damage growth. A successful implementation of the total damage assessment system would involve the interaction of the optical fiber mesh with an adequately designed interrogative electronic package. This paper focuses on the former aspect of the total system. It will address some recent experimental work showing the practicality of the concept for large, complex composite structure.

关键词： FIBER OPTICS

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