bolt strength increases, bolt pre-load increases. In reliable design standpoint of bolted joints, the contact stress at the bearing surfaces between a bolt head and a clamped part must be examined in order to prevent the permanent set due to over stress at the bearing surfaces. Thus, flat washers have been used in bolted joints in order to enlarge the bearing area. In this paper the contact stress at the bearing surfaces between a plain washer and a clamped part is analyzed using the axisymmetric theory of elasticity as a contact problem, where clamped parts are finite hollow cylinders. In the analysis, the bolt head and bolt shaft are replaced by finite solid cylinders and a plain washer and the clamped parts by finite hollow cylinders. In the numerical calculations, the effects of the stiffness, the thickness and the outer diameter of plain washers on the contact stress distribution are examined. Furthermore, it is important to know the mechanical behaviors of bolted joints with plain washers subjected to extemal loads. When, an extermal load wis applied to a bolted joint with a plain washer an increment of axial bolt force Fi occurs in the bolt and the contact stress between the clamped parts is decreased. The ratio WIFi is knows as the load factor in designing bolted joints with plain washers. The analysis of the load factor is also done. In ddition, the effects of the plain washer on the load factor of bolted joints are examined in the numerical calculations. The experiments to measure the load factor of bolted joints with plain washers are carried out. The results of the analysis are compared with the experimental results. (Author abstract)4 Refs (作者,作者单位,来源等信息)Sawa, Toshiyuki( Yamanashi Univ,ip; Yasui, Hajime Reliability, Stress Analysis, and failure Prevention Aspects of Adhesive and bolted Joints, Rubber Components, Composite Springs, ASME Des Eng Div Publ de v 100 1998 Proceedings of th Intermational Mechanical Engineering Congress and Exposition, Anaheim, CA, USA, ASAME, Fairfield, NJ USA, p125-131 除了上述常规期刊以外,班还出版电子期刊,其中最重要的是 Ei Compendex光盘。E也在 因特网上提供检索服务,其URL是htp/www.e1.ong(图3.1)。 件)锅错()查看O收的体)工具①贴助0) gp astp: //m/ai.ore/ ENGINEERING INFORMATION INC O-ELIVERINO THE WORLDIS TECHNICAL INFORMATION 之国 Select from list s OUICK HND WELCOME ssage from Ei Pre Company Information stomer Service Customer testimonials ED Engineering villon PRODUCTS SERVICES interfa All Products Services Villages Databases Scientiflc Publishing Magazines Newsletters :3.1 Engineering Information Inc
下面一段摘要选自 Ei Compendex 目录号) DIALOGN:04924618 Monthly no:EP9804099688 (E)Title: Influence of filament winding parameters on composite vessel quality and strength 作者) Author: Cohen,D 作者单位) Corporate Source: Alliant Techsystems,hc, Magna, UT;USA (UR) Source: Composites-Part A: Applied Science and Manufacturing v 28 n 12 1997. P1035-1047 (出版时间) Publication Year1997 〔出版号) CODEN: CASMF ISSN:1359835X 语言) Language: English (文献类型) Document Type:JA;( foumal articl) Treatment Code:T;( Theoretical;x; (iA94)Abstract: An experimental design investigation of manufacturing and design variables that affect composite vessel quality, strength, and stiffness was conducted. Eight 20-in. cylinders(with one additional cylinder as a replicate)wene manufactured and tested for hoop strength, hoop stiffness, fiber and void volume fraction distribution through thicknes, residual stress, and interlaminar shear strength Material and processing variables were divided into five categories: (a)resin, (b)fiber,(c) fabrication process,( d)design, and (e)equipment. Five variables were selected (from a list of 12)for study using a 14 fractional factorial design of experiment setup. The five variables were:(a)winding tension, (b) stacking sequence,(c)winding-tension gradient,(d)winding time, and (e)cut-versus-uncut helicals. Statistical analysis of the data shows that the composite vessel strength was affected by the manufacturing and design variables. In general, it was found that composite strength was significantly affected by the aminate stacking sequence, winding tension, winding- tension gradient, winding time, and the interaction between winding-tension gradient and winding time. The mechamism that increased composite streng was related to the strong comelation between fiber volume in the composite and vessel strength Cylinders with high fiber volume in the hoop layers tended to deliver high fiber strength(Author abstract)13 Refs (参考文献13篇) 312美国科技会议录索引 美国科技会议录索引 Index to scientific s& Tachnical Proceedings(简称ISIP)以题录的形式报 道在全世界范围内发表的重要的科技会议文献。大有75%到90%重要的国际会议文就可以从 ISTP查到。其内容分有50多个大类,几乎覆盖了所有自然科学和工程技术的重要领域因此sTP 是查询科技会议文献的首选检索工具。 ISTP有月刊和年刊,内容分为六个部分,主要部分是 Content of Proceedings,这里报道会 议内容及有关检索信息,对收录的会议首先给出会议编号,会议名称,会议地点,会议日期以 及其它获取原始文献的检索信息,然后列出会议论文的标题,论文作者以及第一作者的地址 ISTP的其它部分是辅助性索引,包括 Category Index, Permuterm Subject Index, Sponsor Index Author/ Editor Index, Meeting Location Index和 Corporate Index。利用辅助性索引可以查到会议的 编号,然后再转到 Content of Proceeding进一步查阅
般应用ISTP期刊查询会议文献时,首先用 Category Index查找我们所关心的领域里有哪些 会议,如果发现了感兴趣的会议,再根据会议编号,转到 Content of Proceedings进一步查阅。 例如,假设我们想查找无损检测方面的会议情况,先找到 Category Index。在其中的 Engineering类中,看到有两个与无损检测有关的会议 2 INTERNATIONAL CONFERENCE ON EMERGING TECHNOLOGIES IN NDT P88438 3RD INTERNATIONAL WORKSHOP ON NONDESTRUCTIVE TESTING AND COMPUTER SIMULATIONS IN SCIENCE AND ENGINEERING P88506 然后到 Content of Proceedings部分,按会议编号查找P88438 2 INTERNATIONAL CONFERENCE ON EMERGING TECHNOLOGIES IN NDT. Athens, Greece, May 24-26, 1999 Sponsors: Free Univ Brussels, Dept Mech Struct& Mat Univ Patras, Dept Mech Ergn &Aeronaut EMERGING TECHNOLOGIES IN NDT Bds: D. VANHEMELRICK, AANASTASSOPOULOS, T.PHILIPPDS A a Balkema, Rotterdam, 2000, 378pp., 50 chaps, NAhardboutd, ISBN 90-5809-127-9 INDIVDUAL PAPERS AVAILABLE THROUGH THE GENUINE ARTICLE: WHEN ORDERING USE ACCESSION NUMBER BP8OX AA BALKEMA PUBLISHERS OLD POST ROAD BROOKFIELD VT 05036 OR AA BALKEMA PO BOX 1675 3000 BR ROTTERDAM NETHERLAND THE EUROPEAN FEDERATION FOR NDT(EFNDT)BACKGROUND, STRUCTURE. OBJE-CTIVES AIMS D. Schnitger( Bundesanstalt Mat Forsch& Prufung, Bam Berlin Germany)y……………3 THE HISTORY AND THE DRIVING FORCES OF NON DESTRUCTIVE TESTING TODAY AND BEYOND200.. vahavioios Mistras Holdings Grp Princeton.)y………1l RAPID MANUAL INSPECTION AND MAPPING USING INTERGRATED ULTRASONIC ARRAYS.D.LA. Lines, K.R. dison, G Filippi① Diagnost Sonar Ltd livingston Scotland)………!7 APPLICATION OF THE EDDY-CURRENT METHOD IN FERRITIC WELD INSPECTION TPTheodoulidis, M.K. Kotouzas(Technol& Qual Control Ctr Thessaloniki Greece)s 357 在因特网上也可以查阅sTP。ISIP由美国 Institute of Scientific Information(简称ISI)公司 出版,ISI的UR是htp/www.isinetcom(图32)。 在 Internet上查询并阅读ISTP的有关信息之前,让我们先了解一下s的概况。在ISI的主 页上依次链接 About isi和 Products可以看到关于ISI的简介。 For over 40 years, ISI has been publishing scholarly bibliographic databases for the global research community. Fo in 1958 by Dr. Eugene Garfield, ISI maintains the most comprehensive bibliographic database of research information in the world. isi products are primanly distributed worldwide via the Internet/intranet. Our focus is on the ongoing development of access to essential research material published in the joumal and proceedings
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