KOSEN 한인과학기술자네트워크

MIT의 Department of Mechanical Engineering소속 Timothy Gutowski 교수님 연구실에서 복합재료 관련 연구를 수행하고 있습니다. 도움이 되기를 바랍니다. Advanced Composites http://web.mit.edu/lmp/www/composites/ Principal Investigator: Timothy Gutowski, Professor, Department of Mechanical Engineering The advanced composites research group is engaged in work on several projects in advanced composite design and manufacturing. Work is also being done on automatic cost estimation for advanced composite materials, and manufacturing systems improvements for the aerospace industry. >복합재료 성형에 관해 >심도 깊이 다룬 논문이나 >제작방법에 관해 알고 싶습니다. > >지나넌에 한국 Fiber에 견학할 일이 있었는데 >이러한 공정들이 잘 나와 있는 국내외 Site나 >논문을 알고 싶군요... > >감사.

>복합재료 성형에 관해 >심도 깊이 다룬 논문이나 >제작방법에 관해 알고 싶습니다. > >지나넌에 한국 Fiber에 견학할 일이 있었는데 >이러한 공정들이 잘 나와 있는 국내외 Site나 >논문을 알고 싶군요... > >감사. ----------------------------------------------------------------- 1. Potential of knitting for engineering composites - a review Leong, K.H. (Cooperative Research Cent for Advanced Composite Structures Ltd) Ramakrishna, S. | Huang, Z.M. | Bibo, G.A. Source: Composites - Part A: Applied Science and Manufacturing 31 3 2000 Elsevier Science Ltd p 197-220 1359-835X Abstract: Current literature on knitted composites tends to address the aspects of manufacture and characterization separately. This paper aims to bring together these two sets of literature to provide the reader with a comprehensive understanding of the subject of knitted composites. Consequently, this paper contains a detailed outline of the current state of knitting technology for manufacturing advanced composite reinforcements. Selected mechanical properties of knitted composites, and some of the predictive models available for determining them are also reviewed. To conclude, a number of current and potential applications of knitting for engineering composites are highlighted. With a comprehensive review of the subject, it is believed that textile engineers would be able to better understand the requirements of advanced composites for knitting, and, by the same token, composites engineers can have a better appreciation of the capability and limitations of knitting for composite reinforcement. This should lead to more efficient usage and expanded application of knitted composites. In English 113 Refs. Ei tagged | Document availability and cost 2. High-temperature organic composite applications for supersonic missile airframes Facciano, Andrew (Raytheon Missile Systems Co) Source: SAMPE Journal 36 1 Jan-Feb 2000 SAMPE p 9-23 0091-1062 Abstract: Missile launch and flight to target routinely results in extreme thermal shock environments due to supersonic aerodynamic heating. Designs which can meet these conditions are sometimes difficult to achieve using traditional metallic materials. This has lead Raytheon Missile Systems Company (RMSC) to examine the applicability of high-temperature organic composites for supersonic Air Intercept Missile (AIM) airframes. These composites are based primarily on bismaleimide (BMI), cyanate ester (CE), and polyimide (PI) resins. They offer considerable advantages in weight reduction, manufacturing flexibility, and reduced cost, but are usually regarded as too limited by the extreme thermal environments involved. However, internal product development and published industry advances have shown that many of these resin systems can operate in short-term, thermal shock environments that easily exceed the high-temperature, continuous use limits currently published by material suppliers and the aircraft industry. Consequently, these materials offer promise in the design of major AIM airframe components and possibly in innovative concepts of entire missile subsystems. This paper will review the recent advances of organic composite material technologies in the missile industry, current composite missile products of advanced high-temperature airframe components at RMSC, and possible future product endeavors to develop additional capabilities currently not possible with traditional metallic materials. In English 18 Refs. Ei tagged | Document availability and cost 3. Micromechanical modeling approaches for the stiffness and strength of knitted fabric composites: a review and comparative study Huang, Zheng Ming (Huazhong Univ of Science & Technology) Ramakrishna, S. Source: Composites - Part A: Applied Science and Manufacturing 31 5 2000 Elsevier Science Ltd p 479-501 1359-835X Abstract: Knitted fabric reinforced composites have been investigated widely in recent years. A number of different micromechanical modeling schemes have been proposed in the published literature for various types of knitted fabric composites. However, to date, no comparative study has been made to evaluate the suitability of different modeling schemes to predict the stiffness and strength properties of knitted fabric composites. This paper presents a review of currently developed micromechanical modeling techniques for predicting the stiffness and strength of knitted fabric composites. Further, a comparative study of the predictive capabilities of various techniques is carried out based on a plain weft knitted glass fiber fabric reinforced epoxy matrix composite. Useful conclusions are drawn based on the comparative study. In English 68 Refs. Ei tagged | Document availability and cost 4. Microstructure and mechanical properties of Fe-Al-intermetallic compounds/Al2O3 composites manufactured by hot pressing Zhang, Y.J. (Shandong Research & Design Inst of Industrial Ceramics) Yin, Y.S. | Zhou, Y. Source: InterCeram: International Ceramic Review 49 1 2000 Verlag Schmid GmbH p 36-39 0020-5214 Abstract: Fe-Al/Al2O3-composites were manufactured using the hot-pressing technique. With the increase of Fe-Al intermetallic compounds content, the strength and toughness of composites increased, but hardness decreased. For the composite containing 40 vol-% Fe-Al, the bending strength was up to 694 MPa, the fracture toughness(KIC) 8.65 MPa·m1/2. In English 6 Refs. Ei tagged | Document availability and cost 5. Manufacture of fiber-reinforced composites by microwave assisted pultrusion Methven, J.M. (UMIST Polymer Engineering) Ghaffariyan, S.R. | Abidin, A.Z. Source: Polymer Composites 21 4 Aug 2000 Soc Plast Eng p 586-594 0272-8397 Abstract: A brief review of the potential for microwave heating in the manufacture of fiber-reinforced composites is presented, with particular emphasis on the Microwave Assisted Pultrusion (MAP). Manufacture of a 6 mm cylindrical glass reinforced profile, based on a number of latent-cure epoxy resins by MAP is described. These materials combine room temperature stability (long pot life) with rapid crosslinking at elevated temperature. The measured line speeds exceeded 2 m/min, using approximately 800 W of applied microwave power in a single mode TM010 cavity operating at 2450 MHz. The measured pulling force was about 250 N, showing a stick-slip behavior for a crosslinked profile. The ultimate tensile strength and the interlaminar shear strength of the profiles increased after post curing, suggesting that the extent of crosslinking in the MAP die may be diffusion limited. In English 10 Refs. Ei tagged | Document availability and cost 6. Evaluation of hand lay-up and resin transfer molding in composite wind turbine blade structures Cairns, Douglas S. (Montana State Univ) Skramstad, Jon D. Source: International SAMPE Symposium and Exhibition (Proceedings) 45 (I) May 21-May 25 2000 2000 Sponsored by: The San Diego and Utah Chapters of SAMPE SAMPE p 967-980 0891-0138 Abstract: This study is an examination of Resin Transfer Molding (RTM) and other leading composites manufacturing processes as potential candidates for wind turbine blade construction. Among those methods investigated were hand lay-up, compression molding, prepreg, pultrusion, filament winding and RTM. RTM was selected for an economic evaluation against the traditional composite turbine blade manufacturing process, hand lay-up. In reviewing the RTM fabrication technique, it was found that injection modeling is a necessary requirement for the proper mold fill of complex parts and that this process is advancing in four areas pertinent to turbine blade construction: tooling, core integration, automation and sensors. After comparing the limitations and advantages of each of these processes, we concluded that RTM has significant potential in wind turbine blade construction. Resin transfer molding is capable of producing complex geometries with low porosity in a consistent manner and can accomplish this more economically than traditional methods. In English 10 Refs. Ei tagged | Document availability and cost 7. Application of aerospace and defense composites technology to compressed natural gas vehicle fuel tanks: A success story Dick, William E. (Lincoln Composites) Source: International SAMPE Symposium and Exhibition (Proceedings) 45 (II) May 21-May 25 2000 2000 SAMPE p 2369-2380 0891-0138 Abstract: In the late 1980s and early 1990s opportunities in the aerospace and defense markets began to diminish, and companies that had based their business on technologies specifically developed for those markets began to look, with mixed success, for other applications of their technology. Lincoln Composites, formerly a part of Brunswick Technical Products Group, has been developing and manufacturing composite structures for the aerospace and defense industry since 1963. In 1990, in response to the roll-back of the defense business, Lincoln Composites began a program to apply the technologies developed during the previous 27 years to commercial applications. These applications included products such as oil and gas tubular products, paper conversion rolls and shafts, energy storing flywheels and Natural Gas Vehicle (NGV) fuel tanks. This paper discusses the successful development and commercialization of the TUFFSHELLTM NGV fuel tank. Design rationale is presented and the cost, weight, and performance advantages and disadvantages of several major fuel container types are compared. A review of the market and of performance based industry and government standards are included. In English 6 Refs. Ei tagged | Document availability and cost 8. Assessment of ultra-precision machined surfaces Hung, N.P. (Nanyang Technological Univ) Wahid, M.F.B. | Tua, K.F. Source: Materials and Manufacturing Processes 15 4 Jul 2000 Marcel Dekker Inc p 521-531 1042-6914 Abstract: This paper reviews the theory and evaluation of ultraprecision-machined surfaces. Carbide and single crystalline diamond tools were used to machine brittle, ductile and metal matrix composites in macro and micro scales. Data for ductile mode micromachining of brittle materials (silicon, Al2O3, SiC) and ductile materials (Cu-Be, Cu-Zn, Al-Si) were presented and compared. Models for surface finish were presented and evaluated with experimental data. The surface finish and surface integrity were characterized with scanning electron microscopy, scanning probe microscopy, and profilometry techniques. The models agreed with experimental data for ductile materials machined with a diamond tool in macro scale, but deviated from the data at micro scale because of the effect of the material microstructure. The drawbacks of the models were highlighted, i.e., they should include the crystalline orientation of the material and the effect of microstructure on surface finish. In English 8 Refs. Ei tagged | Document availability and cost 9. Current status and future prospects of CMC brake components and their manufacturing technologies Gadow, Rainer (Univ of Stuttgart) Source: Ceramic Engineering and Science Proceedings 21 3 Jan 23-Jan 28 2000 2000 American Ceramic Soc p 15-29 0196-6219 Abstract: A review is given on chemical processing, manufacturing and design as well as first application results for the new refractory ceramic matrix composite (CMC) components in brake technology. It is emphasized that new materials, processing and manufacturing methods for the future will include fiber and layer composites, coatings and hybrid structures, particulate composites and aluminum and magnesium components. In English 30 Refs. Ei tagged | Document availability and cost 10. Properties of conducting polymer-dye composite and photovoltaic characteristics of junction devices Feng, Wei (Osaka Univ) Fujii, Akihiko | Lee, Sergey | Wu, Hongcai | Yoshino, Katsumi Source: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers 39 8 Aug 2000 JJAP p 4978-4981 0021-4922 Abstract: We have prepared new soluble conducting polymer/dye composite and photovoltaic cells with three different architectures using soluble conducting polymer (CP) as hole transport material and perylene derivatives (PV) as electron transport material. These architectures comprise single-layer (ITO/CP-PV/Al) and double-layer (ITO/CP-PV/PV/Al) as well as three-layer (ITO/CP-C60CP-PV/PV/Al) structures. Electrical and optical properties of soluble conducting polymer composite film and current-voltage characteristics and photocurrent spectra of photovoltaic cells are discussed. The results show that the soluble conducting polymer-dye composite represents a new class of organic semiconducting material that can be used to manufacture photovoltaic cells. In English 18 Refs. Ei tagged | Document availability and cost

러시아의 찌올콥스키 기념 국립 모스크바 항공기술 대학교에서 복합재료 생산공학교실 성형기술 연구실에 full professor로 계시는 블라지미르 미하일로비치 비노그라도프의 제자로 이번에 졸업한 황창순 박사의 논문을 참조해 보십시요.. 곧 해외박사등록후 국회도서관이나 국립도서관에 소장될 것입니다.. 여기에는 가열탄성막 성형법이라는 최신 복합재료 성형기술에 대한 논문입니다.. 러시아어 원문이라 번역이 필요하면 황창순 박사에게 연락하십시요.. 하지만 간추림은 영문과 우리말로 수록될 것입니다.. 아래의 홈페이지는 황창순 박사 개인 홈페이지 입니다.. 주소가 틀리다면 일단 제게 메일 주시면 다시 재송부해 전달해드리지요.. cooklee4u@altavista.com(업체사정으로 폐쇄) cooklee4u@yahoo.com 찌올콥스키 기념 국립 모스크바 항공기술 대학교 우주항공공학부 우주항공공학과 비행체생산공학교실 비행체시스템공학 박사과정 이 국 드림