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| 1 | TREATMENT OF METALS, POLYMER FILMS, AND FABRICS WITHA ONE ATMOSPHERE UNIFORM GLOW DISCHARGE PLASMA(OAUGDP) FOR INCREASED SURFACE ENERGY AND DIRECTIONAL ETCHING显示文摘Direct exposure of samples to the active species of air generated by a One Atmosphere Uniform Glow Discharge Plasma (OAUGDP) has been used to etch and to increase the surface energy of metallic surfaces, photoresist, polymer films, and nonwoven fab- rics. The OAUGDP is a non-thermal plasma with the classical characteristics of a DC normal glow discharge that operates in air (and other gases) at atmospheric pres- sure. Neither a vacuum system nor batch processing is necessary. A wide range of applications to metals, photoresist, films, fabrics, and polymeric webs can be accom- modated by direct exposure of the workpiece to the plasma in parallel-plate reactors. This technolopy is simple, it produces effects that can be obtained in no other way at one atmosphere; it generates minimal pollutants or unwanted by-products; and it is suitable for individual sample or online treatment of metallic surfaces, wafers, films, and fabrics. Early exposures of solid materials to the OAUGDP required minutes to produce rela- tively small increases of surface energy. These durations appeared too long for com- mercial application to fast-moving webs. Recent improvements in OAUGDP gas com- position, power density, plasma quality, recireulating gas flow, and impedance match- ing of the power supply to the parallel plate plasma reactor have made it possible to raise the surface energy of a variety of polymeric webs (PP, PET PE etc.) to levels of 60 to 70 dynes/cm with one second of exposure. In air plasmas, the high surface ener- gies are not durable, and fall to 50 dynes/cm after periods of weeks to months. Here, we report the exposure of metallic surfaces, photoresist, polymeric films, and nonwo- ven fabrics made of PP and PET to an impedance matched parallel plate OAUGDP for durations ranging from one second to several tens of seconds. Data will be re- ported on the surface energy, wettability, wickability, and aging effect of polymeric films and fabrics as functions of time of exposure, and time after exposure; the rate and uniformity of photoresist etching; and the production of sub-micron structures by OAUGDP etching at one atmosphere. | J. Reece Roth and Z. Y Chen (Plasma Sciences Laboratory, Department of Electrical and Computer Engineering, University of Tennessee, Knoxville, TN 37996-2100, USA) Peter P.- Y Tsai (Textiles and Nonwovens Development Center (TANDEC), University of Tenness | 2001 | Acta Metallurgica Sinica(English Letters)2001，14，6： | 18 |
| 2 | DESIGN AND PREPARATION OF SILICON NITRIDE COMPOSITE WITH HIGH FRACTURE TOUGHNESS AND NACRE STRUCTURE显示文摘DESIGNANDPREPARATIONOFSILICONNITRIDECOMPOSITEWITHHIGHFRACTURETOUGHNESSANDNACRESTRUCTUREYHuang;H.NHao;Y.L.ChenandB.L.Zhou(1)De... | Y Huang H.N Hao Y.L. Chen and B.L.Zhou (1)Department of Materials Science and Engineering, Tsinghua University,Beijing 100084, China 2)Institute of Metal Research, Chinese Academy of Sciences,Shenyang 110015, China ) | 1996 | Acta Metallurgica Sinica(English Letters)1996，9，6： | 12 |
| 3 | Research on the Influence of Cutting Condition on the Surface Microstruct ure of Ultra-thin Wall Parts in Ultrasonic Vibration Cutting显示文摘In many fields of high-tech industry the ultra-t hi n wall parts are employed. In this paper the experiments were carried out to dis cuss the surface microstructure of the camera’s guided drawtube by applying ult rasonic vibration cutting device to the traditional lathe. The influence rule of the cutting condition on the surface roughness was put forward, which was drawn by comparing the ultrasonic cutting with the common cutting by use of the cemen ted carbide tool and the polycrystalline diamond (PCD) tool. The test results sh owed that the ultrasonic cutting performs better than the common cutting in the same condition. According to the test results analyzing, the surface characteriz ation is influenced clearly by the rigidity of the acoustic system and the machi ne tool, as well the setting height of the tool tip. Otherwise, the dense regula r low frequency vibration ripples will be scraped on the machined surface. When the tool tip is set higher than the rotating center of the work piece by three t imes of the amplitude of ultrasonic vibration, the vibration ripples behave alig ht; they turn light and shade alternatively when the tool tip is lower than the rotating center of the work piece by three times of the amplitude of ultrasonic vibration. According to the test result analyzing, the following conclusions are put forward: 1) The surface roughness in ultrasonic cutting is better than that in common cutting. Under a one third critical cutting velocity, the value of th e surface roughness in ultrasonic cutting rise slightly along with the cutting v elocity, while in common cutting it decreases contrast to the cutting velocity; the curves of the surface roughness in ultrasonic cutting and common cutting see m to be alike, both increase along with the feed rate and the cutting depth, but the value in ultrasonic cutting is smaller in the same condition.2) The influen ce of the coolant on the surface roughness cannot be ignored. The kerosene can b e employed to improve the surface roughness in ultrasonic machining.3) In ultras onic cutting process of aluminum alloy ultra-thin wall work piece, the PCD tool performs better than the cemented carbide tools.4) The vibration ripples result from the not enough rigidity of the acoustic system and the improper setting he ight of the tool tip. The departure of the tool tip from the rotating center of the work piece to some extent causes the vibration ripples on the machined surfa ce. | GAO Guo-fu, ZHAO Bo, JIAO Feng, LIU Chuan-shao (Department of Mechanical Engineering, Jiaozuo Institute of Technolog y, Henan 454000, China) | 2002 | 厦门大学学报(自然科学版)2002，41，S1： | 9 |
| 4 | Automated Sequencing and Subassembly Detection in Automobile Body Assembly Planning显示文摘The choice of the sequence in which parts or subass em blies are put together in the mechanical assembly of a product can drastical ly affect the efficiency of the assembly process. Unlike metal cutting operation s where computer aided system have been available for some 15 to 25 years to hel p manufacturing engineers in generating cutting sequences and NC programs, the m ajority of assembly planning tasks in automobile body design is still manually p erformed by assembly designers according to their past experiences. This has prolonged the production lead time and time to market. This paper describes a p rocedure to automatically derive all the feasible assembly sequences for automob ile body assembly. The procedure is based on a mathematical model of the automob ile body, obtained through the definitions of the connection matrix and contract ed matrix. These two matrices represent the precedence constraint knowledge amon g components and subassemblies. The possible subassemblies are automatically det ected by satisfying some mathematical conditions applicable to these matrices. F or each subassembly and the whole product, all the possible assembly sequences a re generated by rearranging the initial connection sub-matrix and the contracte d matrix. The procedure is applicable to compliant component assemblies, suc h as the automobile body assembly, aircraft frame assembly, and can solve the 'combinatorial explosion' problem efficiently. | ZHANG Yi-zhu 1, NI Jun 2, LIN Zhong-qin 1, LAI Xin-min 1 (1. Institute of Mechanics and Engineering, Shanghai Jiaotong Universit y, Shanghai 200030, China 2. Department of Mechanical Engineering, The University of Michigan, Michigan, U SA) | 2002 | 厦门大学学报(自然科学版)2002，41，S1： | 3 |
| 5 | RESEARCH ON SUPERPLASTICITY IN SiCp/2024Al AND SiCp/8090Al-Li COMPOSITES显示文摘The superplasticity in SiCp/Al alloy and SiCp/Al Li Composites is introduced The composites are prepared by powder metallurgy and cast methods The superplastic parameters are measured Superplastic treatment processing,secondary plastic working and the study of mirostructure are conducted. | Zhang Libin, Wang Zongren (School of Materials Science and Engineering,Harbin Institute of Technology) Hai Jintao (China Academy of Machinery Science and Technology) Sano T Murakoshi Y Takahashi M Hanada K Mechanical Engineering Laboratory,AIST,MITI,J | 2001 | Chinese Journal of Mechanical Engineering2001，14，4： | 2 |
| 6 | THE LIMITATION OF MATANSITIC INVARIANT HABIT PLANE AND MARTENSITE MORPHOLOGY显示文摘THELIMITATIONOFMATANSITICINVARIANTHABITPLANEANDMARTENSITEMORPHOLOGY￥N.J.Gu,H.F.Peng,X.YSong,F.X.YinandE.X.Wang(DepartmentofMa... | N.J. Gu, H.F. Peng, X. Y Song, F.X. Yin and E.X. Wang(Department of Material Science and Engineering Hebei University of Technology, Tianjin 300132, China | 1996 | Acta Metallurgica Sinica(English Letters)1996，9，4： | 2 |
| 7 | Analytical stability pre- diction and design of variable pitch cutters 显示文摘 | ALTINTAS Y ENGIN S BUDAK E | 1999 | Journal of Manufacturing Science and Engineering1999，121，2： | 1 |
| 8 | Report of 24 Left-Sided Portal Hypertension Cases: A Single-Center Prospective Cohort Study显示文摘 | Seyfettin K?klü MD Osman Yüksel MD Mehmet Arhan MD ?ahin ?oban MD ?mer Ba?ar MD ?mer Faruk Yolcu MD Engin U?ar MD Mehmet Ibi? MD ?brahim Ertu?rul MD Burhan ?ahin MD | 2005 | Digestive Diseases and Sciences2005，，5： | 1 |
| 9 | Peripartum hyster-ectomy in a teaching hospital in the eastern region of Turkey显示文摘 | Zeteroglu S Ustun Y Engin Ustun Y | 2005 | Eur J Obstet Gynecol Reprod Biol2005，120，： | 1 |
| 10 | Light harvesting and efficient energy transfer in a boron dipyrrin (BODIPY) functionalized perylenediimide derivative显示文摘 | Deniz Y Altan B Engin U | 2006 | Org Lett2006，8，10： | 1 |
| 11 | Arsenic related hearing loss in miners显示文摘 | Gülin G?k?en Kesici ?lhan ünlü Arzu Ba?türk Top?u Ceylan Demir Bal Engin Tutkun ?mer H?n? Y?lmaz | 2016 | American Journal of Otolaryngology--Head and Neck2016，，1： | 1 |
| 12 | Mechanics and dynamics of general milling cutters, Part Ⅰ:Helical end mills 显示文摘 | Engin S Altintas Y | 2001 | International Journal of Tools and Manufacture2001，41，15： | 1 |
| 13 | Generalized modeling of mechanics and dynamics of milling cutters显示文摘 | Altintas Y Engin S | 2001 | Annals of the CIRP2001，50，1： | 1 |
| 14 | MELD-sodium score and its prognostic value in malignancy-related ascites ofpancreatic and gastric cancer显示文摘 | Engin H Bilir C Ustundag Y | 2013 | Support Care Cancer2013，21，4： | 1 |
| 15 | Analytical stability prediction and design of variable pitch cutters显示文摘 | ALTINTAS Y ENGIN S BUDAK E | 1999 | Journal of Manufacturing Science and Engineering1999，121，2： | 1 |
| 16 | Synthesis and anticonvulsant activity of some (2/4-substituted) Benzaldehyde(2-oxobenzothiazolin-3-yl)acetohydrazones显示文摘 | Bilge C Engin Y Taner E | 1999 | Ⅱ Farmaco1999，54，： | 1 |
| 17 | Mechanical and chemi- cal behavior of spruce wood modified by heat 显示文摘 | SIBEL Y ENGIN D G UMIT C Y | 2006 | Building and Environment2006，41，： | 1 |
| 18 | Study on water-in eat kerncls显示文摘 | LIANG Y T PANG R FENG W duced ultra-weak luminescence value of wh donesian Journal of Electrical Engineering 941 | 2013 | In2013，11，9： | 1 |
| 19 | Mechanics and dynamics of generalmilling cutter, part I : helical end milling 显示文摘 | Engin S Altintas Y | 2001 | International Journal of Machining Tools g~ Manufacture2001，41，15： | 1 |
| 20 | Mechanics and dynamics of general milling cutter, part Ⅱ : inserted cutters 显示文摘 | Engin S Altintas Y | 2001 | International Journal of Machining Tools Manufacture2001，41，15： | 1 |
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