国产X射线衍射仪在婴儿爽身粉石棉检测的应用

化妆品级滑石粉是各种润肤粉、美容粉、婴儿爽身粉等化妆品中常用辅料.在生产滑石粉的矿物中常常含有伴生矿物石棉.石棉纤维对人体危害很大,长期吸入能引起石棉肺、肺癌、胸膜间皮瘤等疾病.采用国产X射线衍射(XRD)-偏光显微镜(PLM)法检测婴儿爽身粉中石棉.该方法可以有效检测婴儿爽身粉中有害矿物石棉.克服单独使用某一种检测手段的不足及片面性,实现快速准确的鉴定粉类化妆品中微量石棉.     

支持MBSE的企业信息管理系统发展与启示

多年的实践表明，基于模型的系统工程（MBSE）没有被大规模采用的主要原因之一是缺乏对整个系统生命周期内各类模型进行管理的能力和手段。在此背景下，介绍了模型管理与MBSE、产品生命周期管理（PLM）的概念及其之间的关系，分析了不同行业的模型管理现状，提出了模型管理的解决方案与技术方向，最后给出了建设企业信息管理系统的建议，以期为企业信息管理系统支持MBSE及后续发展提供思路。     

Information sharing and exchange in the context of product lifecycle management: Role of standards

This paper introduces a model of the information flows in Product Life cycle Management (PLM), serving as the basis for understanding the role of standards in PLM support systems. Support of PLM requires a set of complementary and interoperable standards that cover the full range of aspects of the products’ life cycle. The paper identifies a typology of standards relevant to PLM support that addresses the hierarchy of existing and evolving standards and their usage and identifies a suite of standards supporting the exchange of product, process, operations and supply chain information. A case study illustrating the use of PLM standards in a large organization is presented. The potential role of harmonization among PLM support standards is described and a proposal is made for using open standards and open source models for this important activity.     

一种基于PLM的支持汽车集团研发协作的架构

为实现汽车集团的产品协同开发,提出了一种基于PLM的企业协同开发框架。该框架是以整车厂为核心,面向整车厂与零部件供应商、设计合作伙伴、异地设计中心等延伸性企业之间不同维度的协同架构。提出了协同能力的概念,并通过协同能力和合作类型对协同级别进行了划分,有效地解决了企业协同过程的复杂性和多样性。最后,基于网络的协同开发平台实现了汽车集团的产品协同开发。     

达索V6平台在泵站工程结构设计中的应用

达索V6平台提供了三维设计、仿真优化、产品数据管理、制造过程仿真以及虚拟体验一体化的解决方案,是一套产品创新的完整解决方案。本文以达索V6R2012x平台为应用环境,以一泵站为对象,探索了设计建模、分析、仿真、漫游一体化进程,模拟真实设计的流程。但实际情况要比本文中复杂得多,有时模型并不一定可以完全直接一步到位,需要进行一定程度修改才能成为全过程可用模型。     

Low-dimensional carbonaceous nanofiller induced polymer crystallization

Low-dimensional carbonaceous nanofillers (LDCNs), i.e., fullerene, carbon nanofiber, carbon nanotube, and graphene, have emerged as a new class of functional nanomaterials world-wide due to their exceptional electrical, thermal, optical, and mechanical properties. One of the most promising applications of LDCNs is in polymer nanocomposites; these materials endow the polymer matrix with significant physical reinforcement and/or multi-functional capabilities. The relations between properties, structure and morphology of polymers in the nanocomposites offer an effective pathway to obtain novel and desired properties via structure manipulation, wherein the interfacial crystallization and the crystalline structure with the matrix are critical factors. By now, extensive studies have reported that LDCNs are highly effective nucleating agents that can significantly accelerate their crystallization kinetics and/or induce unique crystalline morphologies in nanocomposites. This review presents a thorough survey of the current literature on the issues relevant to LDCN-induced polymer crystallization. After a brief introduction to each type of LDCN and its derivatives, LDCN-induced crystallization kinetics with or without flow fields, crystalline modification, and interfacial crystalline morphologies are thoroughly reviewed. Then, the origins of LDCN-induced polymer crystallization are discussed in depth based on molecular simulation and experimental studies. Finally, an overview of the challenges in probing LDCN-induced polymer crystallization and the outlook for future developments in polymer/LDCN nanocomposites conclude this paper. Understanding LDCN-induced polymer crystallization offers a helpful guidance to purposefully regulate the structure and morphology, then achieving high-performance polymer/LDCN nanocomposites.     

Ontologies in the context of product lifecycle management: state of the art literature review

The use of ontologies in the context of product lifecycle management (PLM) is gaining importance and popularity, while at the same time it generates a lot of controversy in discussions within scientific and engineering communities. Yet, what is ontology? What challenges have been addressed so far? What role does ontology play? Do we really need ontology? These are the core questions this paper seeks to address. We propose to conduct a comprehensive study of the concept of Ontology firstly in its domain of origin, Philosophy, and secondly in information science. Based on the understanding of this concept and an in-depth analysis of the state of the art, seven key roles of ontology are defined. These roles serve as a framework describing the general state of research on the use of ontologies in the context of PLM.     

面向PLM的产品数据管理技术研究

根据离散制造企业的实际需求,结合PLM技术,把项目管理信息和产品数据模型信息集成起来.主要研究了PLM中的项目管理技术特点,利用现有的建模技术,初步建立了面向PLM的项目管理模型和工艺信息模型,并把两者有机的结合起来,使工艺信息贯穿于产品整个生命周期.     

火箭电气系统数字化研制中的数据集成

数据集成是数字化研制中非常关键的组成部分.对火箭电气系统的数字化研制进行了4个层次的划分:SOC(片上系统)、单板、单机和系统级,进一步指出各个层次研制中的数据流,并基于这4个层次的数据流完成其在PLM平台下的集成.     

基于B/A/S模式的雷达PLM系统的研究

介绍了产品寿命周期管理的概念,分析了信息管理系统目前的主要组建模式及其特点;结合雷达产品寿命周期管理系统的需求,确定了基于B/A/S模式开发的系统实现方案;从系统的结构和功能等方面进行了全面分析研究,采用三层体系结构的模块设计方法,保证了系统的易用性,可扩展性和模快性。