船舶柴油机缸套/活塞环材料及其磨损控制研究进展

作为船舶柴油机的关键摩擦副,缸套/活塞环的性能直接影响船舶柴油机的整机性能、服役寿命、可靠性等。因此,开展缸套/活塞环磨损机理及磨损控制技术研究,有望在提升船舶节能减排、增强船舶运营可靠性和优化船舶经济效益等方面发挥重要作用。从缸套/活塞环材料发展、缸套/活塞环表面纹理技术、润滑油的润滑改性技术以及缸套/活塞环磨损状态监测技术4方面出发,详细总结了船舶柴油机缸套/活塞环材料及其磨损控制技术的研究进展,分析了各种技术的发展现状、应用优势和未来展望,可为从事船舶柴油机缸套/活塞环磨损控制技术研究的科研人员和工程技术人员提供参考。     

老龄船舶柴油机缸套异常磨损的研究

许多老龄船舶柴油机的缸套存在磨损率偏高的问题，严重损害了航运企业的经济效益。本文在对某老龄船主机调查的基础上，分析了缸套异常磨损的原因。并且进一步从管理角度提出了一些措施。     

基于图像处理技术的船舶柴油机缸套磨损预测方法研究

柴油机缸套磨损是影响其寿命的重要因素。如何准确检测出异常磨损并预测磨损状况是一个难点。针对这一问题,本文运用图像处理技术对缸套磨损进行检测。在分析缸套磨损机理的基础上,制定磨损检测的总体方案,详细研究了边缘检测算法和模板匹配算法原理,最后通过实验进行验证。     

某轮主机缸套异常磨损原因分析

主机缸套异常磨损严重影响船舶管理的安全性与经济性,文章通过分析造成主机缸套异常磨损的各种原因,找出缸套异常磨损的直接原因,采取相应的措施使问题得到解决。     

船舶柴油机缸套磨损数据动向分析

简要介绍了引起船舶柴油机缸套异常磨损的原因，以及缸套磨损的测量方法。为了掌握缸套磨损的发展动向。对可能发生的异常磨损及时作出剖析。     

某轮主机缸套异常磨粒磨损及原因分析

文章基于某轮一次主机缸套异常磨损伴随燃烧恶化故障,着重介绍轮机部人员对主机缸套异常磨粒磨损常规定位思路及此次故障根源所在,介绍了故障的排除过程,并对其日常维护管理提出了建议。     

MAN-B＆W10L90MC主机缸套异常磨损与滑阀式喷油器

通过对某轮MAN-B＆W10L90MC型主机缸套异常磨损的分析，指出同类型船舶缸套异常磨损原因是滑阀式喷油器管理不善，并提出管理建议。     

船用低速柴油机气缸套过度磨损的综合评述

气缸套的磨损主要是由早期的磨粒磨损和后期的熔着磨损合成造成的，缸套发生过度磨损时，不能单纯地追究缸套的材质问题，而要注意缸套与活塞环的硬度匹配以及磨合等问题。     

主机气缸油过量缸套和活塞环超常磨损

某轮主机,缸套和活塞环超常磨损,且航行中多次发生扫气箱高温报警。     

再谈主机缸套异常磨损

引起主机缸套异常磨损的因素很多,此文论述活塞下部空间扫气箱由于放残方法不正确或单缸放残通路不畅通引起的缸套异常磨损。     

Errata

正In the paper"Influence of Fouling Assemblage on the Corrosion Behaviour of Mild Steel in the Coastal Waters of The Gulf of Mannar,India"in Vol.12,No.4,Page:509,References were lost,and the two authors’biographies were identical.The correct text is shown below.We apologize to the authors and our readers for any inconvenience caused by the errors.     

Journal of Marine Science and Application 2014 Sum. Contents

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第34届海洋、离岸及极地工程国际会议(英文)

正St.John's,Newfoundland,Canada,May 31-June 5,2015 OMAE2015 is the ideal forum for researchers,engineers,managers,technicians and students from the scientific and industrial communities from around the world to: meet and present advances in technology and its scientific support;     

联合作战计划和执行系统

全球指挥控制系统(GCCS)实施当前美国海军网络中心战信息基础设施的联合计划网络。联合作战计划和执行系统(JOPES)支持GCCS实现联合计划。JOPES有两类计划：时间不限的精密预案计划生成作战计划、方案计划或职能计划；时间敏感的危机行动计划生成作战命令或战役方案。前者在和平时期创建的作战计划是后者的计划基础，加速应付危机的能力。     

Eastbound or westbound ?

In terms of equal sailing distances, where is the inflexion when ships depart from ports in the Asian Continent to New York via Suez and/or Panama？
The answer is China South Port Group （Hong Kong, Shenzhen and Guangzhou）.     

Recent progress on wave induced loading measurements in warships

Recent measurements of wave induced hull strain and flexure in RN warships are presented together with the derivation of the current design criteria for extreme hull girder bending loads. The history of the development of the shipboard instrumentation used is given and recent developments to improve the quality and ease of analysis of the data are described. An unexpectedly high transverse asymmetry in the longitudinal strains measured in destroyers is shown to be the result of a combination of vertical and lateral bending in oblique seas. Finally recent theoretical comparisons between the loading of Deep-Vee hulls and conventional UK rounded bilge hulls are presented which demonstrate the higher loading experienced by this type of hull form.     

桥梁防撞设施物理模型试验

物理模型试验是预报防撞设施所受撞击力及优化设计方案的主要方法之一。结合杭州湾大桥柔性防撞设施及东海大桥独立式防撞体设计方案,阐述了船—防撞体撞击试验的基本原理、方法、试验方案及相关试验结果。提出了柔性防撞系统的优化方案。试验结果表明,该方案经济有效,可供预报类似桥梁防撞设施撞击力时参考。     

印尼某电厂码头水工建筑物设计

印尼某电厂项目码头水工建筑物包括码头、防波堤和护岸等主要组成部分。在该项目水工建筑物的设计过程中,综合考虑当地的自然条件、施工能力和材料来源等因素,不断优化结构选型和结构断面。根据不同使用要求,护岸分别采用直立式和斜坡式2种结构型式,推荐的设计方案节省投资、施工方便,可供同类工程设计参考。     

Impact of regulation on the performances of long-distance transport services: A comparison of the different approaches in Sweden and Norway

Despite the many socio-economic similarities between Sweden and Norway, differences in jurisdiction, organisation, cooperation, and financing of long-distance passenger train and coach services have led to the development of four distinctively different ways of serving the markets. This paper describes how the train and coach markets have developed in the two countries, with emphasis on regulatory and industrial structure and a couple of performance variables.Looking at passenger rail, both countries separated infrastructure from operation over a decade ago. However, while Norwegian rail is characterised by an almost monopoly supplier, rail services in Sweden are partly decentralised to the responsibility of county authorities and are widely subjected to competitive tendering. The rest of the network is about to be opened up for on-the-track competition. Swedish Rail (SJ) has spent the last decades consolidating its core business (passenger rail) and sold out its other businesses. In contrast, the Norwegian state rail (NSB) has expanded its business to become a major bus operator and property owner, with extensions also into the Swedish market.The coach industry was more recently deregulated in both countries. The Swedish coach market is dominated by privately owned companies operating services to and from Stockholm. In Norway, state-owned NSB is a major coach operator on medium distance routes, and is also the largest partner of Nor-Way Bussekspress which totally dominates long-distance coach services. Further, the Norwegian coach market is characterised by cross-ownership and cooperation which has enabled an extensive route network which covers most of Norway.We find distinct differences in achievements in the two modes and in the two countries. Swedish rail services have succeeded in winning market shares and in renewing and developing both infrastructure and service levels to a greater extent than the Norwegian model. On the other hand, the Norwegian coach market seems to be more developed and efficient compared to its Swedish counterpart.The paper concludes with a discussion on the possible links between the different approaches and the performance observed, with the aim to stimulate further and more detailed research on some important issues.     

开放式数据挖掘系统模型

目前国内已经出现了少量的数据挖掘相关产品。国内数据挖掘软件无论从数量还是质量上比较，都与国外软件存在着较大的差距。随着数据仓库技术的普及，数据挖掘应用的需求越来越强烈，如何缩短这种差距，研发数据挖掘软件产品成为国内业界的一个重要问题。通过引用目前国际通用数据挖掘标准技术来构建开放式的数据挖掘系统模型，该系统模型从可扩展性、可重用性、易用性等方面得到了加强。