1,384 research outputs found

    Development of a LCD Photomask Based Desktop Manufacturing System

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    Product Design and Development using Polyjet Rapid Prototyping Technology

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    The Rapid prototyping process has proved to be a good approach since all requirements could be fulfilled. With the help of this technology design and size of product will be easily changed.Complicated small shape products are also manufactured easily. We integrate polyjet technology for product development which is used to become a game-changing innovation for designers, engineers and manufacturers. It improves customer satisfaction. 3D printing helps organizations get better products to market faster than ever before. It enables design teams to quickly produce a high-quality, realistic prototype with moving parts, at low cost when compared to other methods such as CNC machining or outsourcing .The modifications on the product are simple to execute. The Poly Jet technology for manufacture of prototype models is adequate with respect to shape as well as dimension requirements. The advantages are obvious particularly in case of exacting shapes which would be difficult to manufactured by conventional processes or the price would be too high and the time of manufacture too long. Taking into consideration the experience in rapid manufacture of prototype models, their applicability and the responses of users, In cases only a few products not exposed to high mechanical loadings are needed, the models made by Poly Jet process are undoubtedly a good solution.In this paper we also reviewed effect of process parameter on mechanical properties and takentime consideration. Keywords: 3D Printing, Model Making, Additive manufacturing, Innovation, Polyjet Technology, Rapid Prototypin

    Building a 3D Printer: Motors and Controls

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    3D printers require a reliable and robust control system to provide the proper quality of printed parts. The goal of this project was to design and implement the electronic and software controls for the large scale 3D printer. This system must be able to run all three print heads as well as color mixing in the central diamond print head. The resulting design for the control system utilized a RUMBA control board running with Repetier-Firmware as the printer firmware. A separate system was designed for the heat beds, which used an Arduino Uno to control a set of relays to maintain the set temperature to the heat beds

    Micro-manufacturing : research, technology outcomes and development issues

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    Besides continuing effort in developing MEMS-based manufacturing techniques, latest effort in Micro-manufacturing is also in Non-MEMS-based manufacturing. Research and technological development (RTD) in this field is encouraged by the increased demand on micro-components as well as promised development in the scaling down of the traditional macro-manufacturing processes for micro-length-scale manufacturing. This paper highlights some EU funded research activities in micro/nano-manufacturing, and gives examples of the latest development in micro-manufacturing methods/techniques, process chains, hybrid-processes, manufacturing equipment and supporting technologies/device, etc., which is followed by a summary of the achievements of the EU MASMICRO project. Finally, concluding remarks are given, which raise several issues concerning further development in micro-manufacturing

    RepRapable automated open source bag valve mask-based ventilator

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    This study describes the development of an automated bag valve mask (BVM) compression system, which, during acute shortages and supply chain disruptions can serve as a temporary emergency ventilator. The resuscitation system is based on the Arduino controller with a real-time operating system installed on a largely RepRap 3-D printable parametric component-based structure. The cost of the system is under $170, which makes it affordable for replication by makers around the world. The device provides a controlled breathing mode with tidal volumes from 100 to 800 milliliters, breathing rates from 5 to 40 breaths/minute, and inspiratory-to-expiratory ratio from 1:1 to 1:4. The system is designed for reliability and scalability of measurement circuits through the use of the serial peripheral interface and has the ability to connect additional hardware due to the object-oriented algorithmic approach. Experimental results demonstrate repeatability and accuracy exceeding human capabilities in BVM-based manual ventilation. Future work is necessary to further develop and test the system to make it acceptable for deployment outside of emergencies in clinical environments, however, the nature of the design is such that desired features are relatively easy to add with the test using protocols and parametric design files provided

    A Modular Open-Technology Device to Measure and Adjust Concentration of Sperm Samples for Cryopreservation

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    Repositories for aquatic germplasm can safeguard the genetic diversity of species of interest to aquaculture, research, and conservation. The development of such repositories is impeded by a lack of standardization both within laboratories and across the research community. Protocols for cryopreservation are often developed ad hoc and without close attention to variables, such as sperm concentration, that strongly affect the success and consistency of cryopreservation. The wide dissemination and use of specialized tools and devices can improve processing reliability, provide data logging, produce custom hardware to address unique problems, and save costs, time, and labor. The goal of the present work was to develop a low-cost and open-technology approach to standardize the concentration of sperm samples prior to cryopreservation. The specific objectives were to: 1) fabricate and test a peristaltic pump and optical evaluation module (POEM); 2) fabricate and test a prototype of the modular, open-technology concentration measurement and adjustment system (CMAS), which incorporated the POEM; 3) identify opportunities to extend the CMAS to microliter volumes through low-cost resin 3-D printing, and 4) identify strategies from this work that can be applied to future open fabrication efforts. The POEM and CMAS were prototyped and tested with biological samples. A relationship between optical signal and cell concentration of channel catfish (Ictalurus punctatus) sperm samples was established by linear regression. In a blind trial, cell concentrations were estimated with the POEM and correlated closely to their known concentrations (linear regression R2 = 0.9945) in a range of 1 × 108 to 4 × 109 cells/mL. The CMAS was able to estimate and adjust the concentration of a sample of the marine microalgae Tetraselmis chuii as a preparatory step for cryopreservation. To explore the possible use of the CMAS with microliter sample volumes in future work, evaluation of low-cost resin 3-D printing showed that this technology can approach conventional microfabrication techniques in feature quality and resolution. The development of the CMAS as open technology can provide opportunities for community-level standardization in cryopreservation of aquatic germplasm, invite new users, makers, and developers into the open-technology community, and increase the reach and capabilities of aquatic germplasm repositories

    Industrial Design

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    A new breed of modern designers is on the way. These non-traditional industrial designers work across disciplines, understand human beings, as well as business and technology thus bridging the gap between customer needs and technological advancement of tomorrow. This book uncovers prospective designer techniques and methods of a new age of industrial design, whose practitioners strive to construct simple and yet complex products of the future. The novel frontiers of a new era of industrial design are exposed, in what concerns the design process, in illustrating the use of new technologies in design and in terms of the advancement of culturally inspired design. The diverse perspectives taken by the authors of this book ensure stimulating reading and will assist readers in leaping forward in their own practice of industrial design, and in preparing new research that is relevant and aligned with the current challenges of this fascinating field

    Comparing Innovation Performance in the EU and the USA: Lessons from Three ICT Sub-Sectors

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    The objective of the study is to document the existence of innovation gaps between the EU and its main competitors in specific ICT sub-sectors – namely web services, industrial robotics and display technologies –and to explore the role of government policies in Europe’s future needs for innovation in information and communication technologies (ICT) through a comparison with the USA and Asian countries. Our analysis shows that rather than there being a simple innovation gap with the EU lagging behind the USA, a more nuanced picture emerges in which firms in different countries have strengths in different sub-sectors and in different parts of the value chain. A key lesson from the analysis of the three subsectors is the critical importance of higher education, particularly elite university research, and of local networks as generated by clusters. Governments can also encourage innovation through appropriate intellectual property and competition laws and, more generally, through the development of a business environment conducive to innovation. Finally, Governments can have a very important role through the funding of early-stage innovationJRC.J.3-Information Societ
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