三维打印成形的金属零件快速制造技术

阐述三维打印快速成形技术的类型及特点,对利用三维打印技术进行金属零件快速制造的几种工艺及其特点进行了对比分析.     

三维打印成形技术的新进展

介绍三维打印成形技术3种不同工艺的工作原理、最新研究现状和主要的三维打印机性能特点,列举一些三维打印应用例子,最后展望三维打印成形技术的发展前景。     

基于CT的骨骼三维打印技术的发展现状与趋势

基于CT的骨骼二维打印技术足近几年提出的新兴技术,是目前制造生物活性人工骨骼的有效方法.通过对二维打印技术发展现状和CT扫描数据导入三维打印机的特点、难点的研究,分析三维打印技术制作生物活性骨骼存在的问题,提出了三维打印技术应用于人体骨骼制作的发展趋势.     

粒状熔融材料三维打印成形系统的设计与研究

提出了一种全新的快速成形工艺——粒状熔融材料三维打印成形工艺,阐述了其工作原理。完成了基于办公环境的粒状熔融材料三维打印成形系统的设计,进而分析了研制该系统的关键技术。     

三维打印快速成形技术及其应用

三维打印快速成形技术与其他快速成形技术相比具有众多优点,被认为是快速成形领域最有生命力的新技术之一。本文根据喷射材料的不同,将三维打印快速成形技术分为粘结成形三维打印和直接成形三维打印,分别介绍了它们的工作原理、系统组成和结构特点。结合三维打印快速成形技术独特的成形工艺特性,对其在产品的概念原型与功能原型件制造、生物医学工程、制药工程和微型机电制造等领域的应用前景进行了分析和展望。     

三维打印成形技术在制药工程中的应用

快速成形与制药工程的结合体现了先进制造技术的发展方向。介绍了采用三维打印成形技术制造先进可控释放和智能微晶片药物的方法，并分析了这种方法的优势和可行性，进一步讨论了三维打印成形技术应用于制药工程所涉及到的一些关键技术。     

三维打印成形系统的开发

三维打印成形技术是一个多学科交叉的系统工程。介绍了三维打印的成形机理,讨论了机械设计方案和工作流程,并根据实验确定了成形参数。并给出了三维打印成形的应用实例。     

三维打印技术研究分析及应用

快速成型技术的发展给制造业带来了巨大变革,其中三维打印技术凭借其三维结构的快速和自由制造开启了新的科研领域。本文介绍了三维打印的原理及关键技术,在此基础上从发展现状、应用领域等多角度对该技术进行了分析。     

三维打印的现状与发展前景

三维打印是一种增量制造工艺,应用前景灿烂,其愿景是未来可以在任何地方(Anywhere)制作任何构造(Any-composition)、任何材料(Any-material)和任何几何形状(Any-geometry)的实物。综述了该类技术的特点和优势、近年来在成本价格和材料方面的技术突破以及新的应用领域,并探讨了可能带来的商务范式、生产模式和生活方式的变革。最后指出该类技术的局限性和未来发展前景。     

彩色三维打印成形技术及应用

介绍了彩色三维打印(3DP)成形技术的工作原理及其成形工艺,分析了彩色三维打印的原型件的物理性能.此外,还介绍了彩色三维打印成形技术的应用.     

Obsolescence management for long-life contracts: state of the art and future trends

This paper provides a comprehensive literature review on the problem of obsolescence in “sustainment-dominated systems” that require support for many decades. Research on this topic continues to grow as a result of the high impact of obsolescence on the in-service phase of long-term projects. Research on obsolescence also seeks to understand how it can be managed, mitigated and resolved. The paper aims to clarify and classify the different activities that may be included in an obsolescence management planning, taking into account not only electronic components but also other aspects of the system such as mechanical components, software, materials, skills and tooling. The literature review shows that although there are many commercial tools available that support the obsolescence management during the in-service phase of the life cycle of a system, little research has been done to forecast the costs incurred.     

State of the art and future developments of measurement applications on smartphones

The modern smartphones contain different sensor technologies, so they can be used as stand-alone measurement instruments on a wide range of application domains. The paper deals with a survey of measurement applications based on smartphones. In the first part, the evolution of mobile phone technologies, including the sensors and mobile networks developments, is presented. Then, in order to highlight the sensors and the communication capabilities, the architectural overview of the hardware and software technologies, which are available on latest series of smartphones, is reported and discussed. A review of measurements applications using the smart sensors and the communication interfaces available on smartphones, it is also presented. A classification of smartphone applications, which looks the smartphone as a handheld measurement instrument, is presented. In the last part, the integration of augmented reality to the measurement applications and new type of measurement systems, having a smartphone as processing support, is presented.     

Nano- and micrometrology at PTB: State of the art and future challenges

In this paper we will provide an overview of methods and instruments developed and applied at the National Metrology Institute of Germany (Physikalisch Technische Bundesanstalt—PTB) for high-precision dimensional (linear and angular) measurements and discuss some challenges for future developments in this important area of metrology.     

State of the art and future developments of the Augmented Reality for measurement applications

Augmented Reality (AR) is a technology that enriches the sensorial perception of a person by adding virtual contents directly on the user’s surrounding environment. The modern AR platforms, such as smartphones and head-mounted displays, are moving the application fields of this technology from research centers to a wide range of application domains. The aims of the paper are to highlight the role of measurements in an AR system and the AR as support to the measurements. In the first part, the evolution of AR concept and platforms that can implement AR systems, are presented. An AR system requires measurements of user and objects position and orientation, for this reason, several tracking systems and some calibration procedures are described. A survey of applications using the AR as user interface of measurement system is presented. Furthermore, future trends for researches oriented on the development of calibration procedures for tracking systems are discussed.     

3D打印技术的发展与应用对未来产品设计的影响

3D打印技术的发展给未来的制造业带来了革命性变革;基于对新旧生产方式的对比,分析了3D打印技术对产品设计理念、细节、流程及产业模式所带来的影响:产品结构与造型的设计不再受到传统制造工艺束缚;独立设计师可依靠3D打印技术将自己的创意变成真实的产品,从而催生了大量独立设计师及设计品牌;设计的社会化趋势将会打破以往设计组织的僵硬的结构划分,消费者获得了自己设计、生产产品的权力.     

计算机辅助三维公差分析技术的研究进展

总结国内外计算机辅助三维公差分析技术的研究现状。论述公差表示的数学模型和各种三维公差分析方法的特点,介绍当前计算机辅助三维公差分析软件开发情况,并对三维公差分析技术的发展前景进行展望。     

微拉深成形现状及其发展

随着微电子机械的飞速发展,产品的微型化已成为工业界不可阻挡的趋势.微拉深作为微成形加工中的一种重要加工方法,已在医疗器械、微机械等行业得到广泛的应用.但微成形加工中表现出来的尺寸效应及晶粒大小对微成形加工的影响,使微拉深成为全新的领域,传统拉伸理论已无法继续使用.讨论了尺寸效应、晶粒大小、摩擦对微拉深的影响,并对微拉深的成形方法、微模具的加工方法及材料的选择、微成形材料、微拉深装置进行了介绍.     

State of the art of Deep Rolling

It is vital to control fatigue life in different industrial sectors, and to improve this, surface treatments are usually used. Some of the most important surface treatments are Shot Peening (SP), Laser Shock Peening (LSP) or Deep Rolling (DR), which are used to improve the surface properties and resistance to cyclic loading of the components. The idea of this article is to focus on Deep Rolling and revise the state of its development at the present time, with a particular emphasis on implementation and changes in materials. A comparison of Deep Rolling versus other surface has been made, and different processes that can improve the effects of Deep Rolling, such as heat treatments, are shown. It can be concluded that the pressure of the tool during the process is the most important control parameter for Deep Rolling and that the residual stresses and strain hardening have the greatest influence in terms of fatigue life. Moreover, selecting the correct values of the other control parameters for DR, depending on the material on which DR is to be done, allows increased compressive residual stresses, a hardened layer near the surface and lower surface roughness, all of which produce an improvement in fatigue life.     

State of the art of intraocular lens manufacturing

Intraocular lens implantation surgery is the only approach for cataract treatment at present. Apart from removing the cloudy lens, correction of refractive errors becomes the second main function of intraocular lenses. This paper systematically summarizes the intraocular lenses in terms of its material, design, manufacturing and evaluation. The next generation of intraocular lenses with customized freeform surfaces is highlighted from the lens design viewpoint. The status of processing and measurement methods is presented for both current intraocular lenses and future freeform lenses. Finally, the research perspectives are outlined.