检索结果-南通市图书馆

Materials Sciences and Applications 2015年第6期6卷 489-499页

作者： B. G. Sumana H. N. Vidya Sagar K. V. Sharma M. Krishna Research Scholar Department of Mechanical Engineering University Visvesvaraya College of Engineering Bangalore India Department of Mechanical Engineering University Visvesvaraya College of Engineering Bangalore India Department of Mechanical Engineering R V College of Engineering Bangalore India

The aim of the research work was to numerically investigate the residual stresses induced between the layers of fiber metal laminate (fml) cylinder (glass/epoxy reinforced aluminum laminates) under buckling hydrostatic loading. For the analysis of buckling behavior of fml cylinders, various fiber orientations such as 0/90°, 60/30°, ±45° and ±55° and different FRP thickness of 1, 2, and 3 mm were considered. The aluminum cylinder of inner diameter 80 mm, length 800 mm and wall thickness 1 mm was modeled with SHELL281 element type and a total of 1033 elements were used for computing the induced residual stresses between the layers. The results show that magnitude of residual stresses between the layers decreased along the thickness from outer layer towards the inner layer in sine wave form. The maximum residual Von-Mises stress was at inner aluminum layer while the maximum residual radial stress was at the outermost layer of fml cylinder due to the inward pressure. Among all types of fml cylinder 0/90° fiber oriented fml cylinder exhibited the least radial stress and a maximum Von-Mises stress along the FRP thickness.

关键词： fml Cylinder External Hydrostatic Loading Residual Stress Von-Mises Stress Radial Stress

箱体零件fml/FMC常用物料转运设备的应用分析

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

重庆工商大学学报（自然科学版） 2013年第2期30卷 83-88页

作者：胡健吴洋机械工业第三设计研究院综合一所重庆400039 利勃海尔机械服务(上海)有限公司产品管理部上海200131

fml/FMC通过物料转运设备,将多台自动化加工设备有效连接,可显著提高加工设备利用率,实现高质量、高效率生产。通过箱体类零件加工fml/FMC所使用的物料转运设备的典型应用进行介绍,分析了该类型设备应用经济上的可行性。物料转运设备的... 详细信息

fml/FMC通过物料转运设备,将多台自动化加工设备有效连接,可显著提高加工设备利用率,实现高质量、高效率生产。通过箱体类零件加工fml/FMC所使用的物料转运设备的典型应用进行介绍,分析了该类型设备应用经济上的可行性。物料转运设备的应用顺应了我国制造业企业竞争环境变化的趋势,在我国零部件制造业拥有广阔的应用前景。

关键词：箱体零件 fml FMC 物料转运设备

柔性制造生产线（fml）的生产计划与均衡生产

在线全文

学校读者我要写书评

暂无评论

金城科技 1994年第4期 44-45页

作者：刘义林

Influence of metal/composite interface on the damage behavior and energy absorption mechanisms of fmls against projectile impact

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Defence Technology（防务技术） 2022年第3期18卷 441-456页

作者： Sanan H.Khan Ankush P.Sharma Department of Mechanical Engineering Aligarh Muslim University(AMU)Aligarh202002India Department of Aerospace Engineering Indian Institute of Technology MadrasChennai600036India

This paper focuses on the interface failure in metal/GFRP laminates on account of the high-velocity impact phenomenon by a hemispherical *** study considers three laminates in which the failure inside the 8-layer 0/90 GFRP laminate is compared with the other two laminates that include metal layers in their layup *** metal layers were placed on the top and bottom on one type of laminates while in the other additional metal layers are placed symmetrically inside the layup as *** were subjected to high-velocity impact by a hemispherical projectile at different energy levels and the idea is not to perforate the laminate configuration instead to account for the damage incurred in these laminates and the role of metal layers in providing resistance to damage within these *** study utilizes experimental findings and proposes a rate-dependent Finite Element(FE)model consisting of the Hashin-Puck failure scheme for composite and the Johnson-Cook damage model for metal *** results of the model satisfactorily agree with their experimental counterparts and provide valuable insight into the damage resistance inside the *** has been observed that the 8-layer GFRP laminate was good in terms of elastic recovery and prevention of propagation of damage inside the laminates only,till the impact energy was *** higher impact energy,they show poor damage resistance as the fiber failure is triggered in ***,laminates with metal layers are shown to protect the laminate by dissipating energy in the delamination of metal/GFRP interface,shear failure of the metal layer,and on account of metal *** study further shows that the throughthickness compressive stresses were responsible for the failure of laminates and also triggering the delamination in them.A damage energy study was performed to investigate the amount of energy dissipating in various failure modes like delamination,matrix cracking,fiber failure,etc。

关键词： High-velocity impact fml Delamination Abaqus

Federated Machine Learning Based Fetal Health Prediction Empowered with Bio-Signal Cardiotocography

在线全文

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2024年第3期78卷 3303-3321页

作者： Muhammad Umar Nasir Omar Kassem Khalil Karamath Ateeq Bassam SaleemAllah Almogadwy Muhammad Adnan Khan Muhammad Hasnain Azam Khan Muhammad Adnan Department of Computer Sciences Bahria University Lahore CampusLahore54000Pakistan Faculty of Information Technology Liwa CollegeAbu Dhabi00000United Arab Emirates Department of Computing Skyline University CollegeSharjah1797United Arab Emirates Department of Computer Science Taibah UniversityMedina42353Saudi Arabia Riphah School of Computing and Innovation Faculty of ComputingRiphah International UniversityLahore CampusLahore54000Pakistan Department of Engineering and Development Dubizzle LabsLahore54000Pakistan Department of Software Faculty of Artificial Intelligence and SoftwareGachon UniversitySeongnam-si13120Korea

Cardiotocography measures the fetal heart rate in the fetus during pregnancy to ensure physical health because cardiotocography gives data about fetal heart rate and uterine shrinkages which is very beneficial to detect whether the fetus is normal or suspect or *** cardiotocography measures infer wrongly and give wrong predictions because of human *** traditional way of reading the cardiotocography measures is the time taken and belongs to numerous human errors as *** condition is very important to measure at numerous stages and give proper medications to the fetus for its *** the current period Machine learning(ML)is a well-known classification strategy used in the biomedical field on various issues because ML is very fast and gives appropriate results that are better than traditional *** techniques play a pivotal role in detecting fetal disease in its early *** research article uses Federated machine learning(fml)and ML techniques to classify the condition of the *** study proposed a model for the detection of bio-signal cardiotocography that uses fml and ML techniques to train and test the ***,the proposed model of fml used numerous data preprocessing techniques to overcome data deficiency and achieves 99.06%and 0.94%of prediction accuracy and misprediction rate,respectively,and parallel the proposed model applying K-nearest neighbor(KNN)and achieves 82.93%and 17.07%of prediction accuracy and misprediction accuracy,***,by comparing both models fml outperformed the KNN technique and achieved the best and most appropriate prediction results as compared with previous studies the proposed study achieves the best and most accurate results.

关键词： Cardiotocography ML fml fetal disease bio-signal

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

生产线中的实时监控技术

机械设计与制造工程 2000年第3期29卷 52-54页

作者：冷晟王宁生南京航空航天大学CIMS中心江苏南京210016

柔性制造系统已成为柔性自动化生产的最佳形式 ,而对于少品种大批量生产 ,柔性生产线则是理想的主导设备。在CIMS的信息集成环境下 ,将柔性生产线中实时监控的信息和有关数据集成进信息系统 ,可以确保安全生产和提高产品的质量 ,与此同... 详细信息

柔性制造系统已成为柔性自动化生产的最佳形式 ,而对于少品种大批量生产 ,柔性生产线则是理想的主导设备。在CIMS的信息集成环境下 ,将柔性生产线中实时监控的信息和有关数据集成进信息系统 ,可以确保安全生产和提高产品的质量 ,与此同时增强了对生产系统的实时控制和及时掌握实际生产信息的能力 ,提高了整个系统的信息反馈速度。

关键词： fml 实时监控数据采集 CIMS

Modified Logistic Maps for Cryptographic Application

在线全文

学校读者我要写书评

暂无评论

Applied Mathematics 2015年第5期6卷 773-782页

作者： Shahram Etemadi Borujeni Mohammad Saeed Ehsani Faculty of Computer Engineering University of Isfahan Isfahan Iran

In this paper, definition and properties of logistic map along with orbit and bifurcation diagrams, Lyapunov exponent, and its histogram are considered. In order to expand chaotic region of Logistic map and make it suitable for cryptography, two modified versions of Logistic map are proposed. In the First Modification of Logistic map (fml), vertical symmetry and transformation to the right are used. In the Second Modification of Logistic (SML) map, vertical and horizontal symmetry and transformation to the right are used. Sensitivity of fml to initial condition is less and sensitivity of SML map to initial condition is more than the others. The total chaotic range of SML is more than others. Histograms of Logistic map and SML map are identical. Chaotic range of SML map is fivefold of chaotic range of Logistic map. This property gave more key space for cryptographic purposes.

关键词： Chaotic Map Modified Logistic Map fml Map SML Map

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

基于XML的税收网络调查系统的设计与实现

基于XML的税收网络调查系统的设计与实现

作者：卢凤兰天津大学

学位级别：硕士

本文针对当前我国税收调查系统的业务需求,利用先进的XML和Java技术,设计和实现了一种新型的税收网络调查系统。该系统为了降低税企双方投入成本、提高办事效率,将B/S和C/S两种体系结构相结合,即通过B/S系统实现数据采集,通过C/S系统实... 详细信息

本文针对当前我国税收调查系统的业务需求,利用先进的XML和Java技术,设计和实现了一种新型的税收网络调查系统。该系统为了降低税企双方投入成本、提高办事效率,将B/S和C/S两种体系结构相结合,即通过B/S系统实现数据采集,通过C/S系统实现数据分析,充分利用Internet的优势,有效地完成了税收调查工作中数据采集和上传的任务。为了适应税收调查表参数变化快、逻辑关系复杂的特点,该系统利用XML自描述的特点,设计了一种基于XML的FORM描述语言(fml)作为税收调查表的描述语言,用该语言描述具体的税收调查表,然后通过fml解析程序生成JavaApplet源代码。这种设计实现了调查表描述和显示相分离,大大提高了税收网络调查系统的可维护性。因为在繁杂的税收业务中,绝大多数是采用表格报送的方式,表格样式与表格逻辑关系经常发生变化也是税收业务需求的特点,所以使用该描述语言来完成税收业务技术上的实现尤其适合。由于XML数据库技术尚不成熟,从浏览器端得到的XML税收调查数据还需要转换到关系数据库中,本文中使用了基于映射的转换算法。为了能够让Java Applet把XML数据写入服务器,在服务器端设计了一个JSP进程,使得该进程象代理服务器一样把XML数据保存在服务器的磁盘上,该进程被称为服务器代理。本系统基于扩展性和安全性考虑,根据税收调查业务流程将系统分为内网和外网两部分。

关键词： XML fml 税收调查系统

同方学位论文库评论

在线全文

同方学位论文库

学校读者我要写书评

暂无评论

FMS在我国发展前景预测

组合机床与自动化加工技术 1987年第2期 -页

作者：余承宙大连组合机床研究所

文章首先在分析我国现有条件的基础上,论证了我国研究开发柔性制造系统的必要性和迫切性,然后,对1990年和2000年我国柔性加工系统的技术发展水平和国内需求量进行了预测,最后讨论了我国开发研制FMS的技术路线和对策。图6幅、表3个、参... 详细信息

文章首先在分析我国现有条件的基础上,论证了我国研究开发柔性制造系统的必要性和迫切性,然后,对1990年和2000年我国柔性加工系统的技术发展水平和国内需求量进行了预测,最后讨论了我国开发研制FMS的技术路线和对策。图6幅、表3个、参考文献8种。

关键词： FMS 开发研制 FMC 拥有量北京机床研究所 fml

在线全文

学校读者我要写书评

暂无评论

酷机我做主

微电脑世界 2012年第11期 100-101页

由于新一代的Trinity APU的针脚改为FM2的904pin，与上一代fml接口的主板并不兼容。想要尝鲜Trinity APU平台的玩家．最好购买AMD为其专门打造的A85X芯片组主板（A55与A75芯片组主板同样支持FM2接口的CPU）。由于二新款APU的显示核心的... 详细信息

由于新一代的Trinity APU的针脚改为FM2的904pin，与上一代fml接口的主板并不兼容。想要尝鲜Trinity APU平台的玩家．最好购买AMD为其专门打造的A85X芯片组主板（A55与A75芯片组主板同样支持FM2接口的CPU）。由于二新款APU的显示核心的性能又有更好的提升，因此我们为大家推荐的APU配置由游戏的角度来推荐。

关键词： Trinity APU FM2 芯片组不兼容主板 fml A75