Additive Manufacturing in Jewellery Design

2012 ◽  
Author(s):  
Telma Ferreira ◽  
Henrique A. Almeida ◽  
Paulo J. Bártolo ◽  
Ian Campbell
Keyword(s):  
Additive Manufacturing ◽  
New Technologies ◽  
Selective Laser Sintering ◽  
Production Method ◽  
Market Demand ◽  
Labor Costs ◽  
Product Complexity ◽  
New Production ◽  
Advantages And Disadvantages ◽  
Manufacturing Technologies

Additive manufacturing has become a well-known and widely used process among engineers and designers within the past decade to respond to high levels of market demand and product complexity. The jewellery industry still works essentially on traditional fabrication methods to much time consuming and in some cases lacking efficiency compared to the quality of the end product. The inclusion of new technologies can be a solution to overcome these issues. Additive fabrication enables the fabrication of new products and geometries reducing manufacturing time, energy and labor costs. This paper discusses the advantages and disadvantages of traditional manufacturing processes, such as Investment Casting, and proposes a new production method based on the use of advanced modeling and additive manufacturing. Three additive manufacturing technologies were used, such as selective laser sintering, stereolithography and 3D printing. A computational application for jewellery design is also presented to help manufactures and customers to fabricate novel jewellery pieces. This tool is based on a customization concept, which has been of increasing interest during recent years.

Challenges and Approaches for Metrology of Additive Manufactured Lattice Structures by Industrial X-Ray Computed Tomography

2021 ◽  
Vol 1161 ◽  
pp. 131-136
Author(s):  
Philip Sperling ◽  
Anton du Plessis ◽  
Gerd Schwaderer
Keyword(s):  
Additive Manufacturing ◽  
Production Method ◽  
Detailed Examination ◽  
Design Element ◽  
Lattice Structures ◽  
New Production ◽  
X Ray ◽  
Industrial Ct ◽  
X Ray Computed ◽  
Manufacturing Technologies

Lattice structures can be highly complex imitating natural cellular materials. By the wide adoption of additive manufacturing technologies, lattice structures are a popular design element with many advantages for lightweight and highly functional parts. A detailed examination and an intense inspection of this type of new design element and this new production method is necessary to enable a broad industrialization. In this study we demonstrate how to use x-ray based industrial CT to measure lattice structures in additive manufacturing. This paper shows certain challenges and approaches for metrology on lattice structures. The results show significant deviations between designed and built parts, highlighting the need for quantification and non-destructive inspection.

Laser Additive Manufacturing

3D Printing ◽  
2017 ◽  
pp. 154-171 ◽  
Author(s):  
Rasheedat M. Mahamood ◽  
Esther T. Akinlabi
Keyword(s):  
Additive Manufacturing ◽  
Manufacturing Process ◽  
Computer Aided Design ◽  
Selective Laser Sintering ◽  
Three Dimensional ◽  
Cad Model ◽  
Laser Additive Manufacturing ◽  
Computer Aided ◽  
Manufacturing Technologies ◽  
Aided Design

Laser additive manufacturing is an advanced manufacturing process for making prototypes as well as functional parts directly from the three dimensional (3D) Computer-Aided Design (CAD) model of the part and the parts are built up adding materials layer after layer, until the part is competed. Of all the additive manufacturing process, laser additive manufacturing is more favoured because of the advantages that laser offers. Laser is characterized by collimated linear beam that can be accurately controlled. This chapter brings to light, the various laser additive manufacturing technologies such as: - selective laser sintering and melting, stereolithography and laser metal deposition. Each of these laser additive manufacturing technologies are described with their merits and demerits as well as their areas of applications. Properties of some of the parts produced through these processes are also reviewed in this chapter.

A high-speed additive manufacturing approach for achieving high printing speed and accuracy

2019 ◽  
Vol 234 (14) ◽  
pp. 2741-2749 ◽  
Author(s):  
Aamer Nazir ◽  
Jeng-Ywan Jeng
Keyword(s):  
Additive Manufacturing ◽  
Material Property ◽  
High Speed ◽  
Selective Laser Sintering ◽  
High Accuracy ◽  
Digital Manufacturing ◽  
Functional Material ◽  
Direct Digital Manufacturing ◽  
Manufacturing Technologies ◽  
Printing Speed

The primary concern of the Industry 4.0 is the direct digital manufacturing of customized products on demand at high production speed, high accuracy with functional material property. Although the unique capabilities of existing additive manufacturing technologies make it suitable for direct digital manufacturing, there are numerous limitations which include low printing speed, less accuracy and repeatability, and a limited selection of materials for a particular application. Therefore, a high-speed additive manufacturing approach is proposed in this paper, that is capable of achieving high speed of production, high accuracy, and surface finish, and functional material property. For better understanding, authors describe those additive manufacturing technologies that are capable of achieving the aforementioned characteristics. For validation, samples of various dimensions were 3D printed on a selective laser sintering and a high-speed multijet fusion 3D printer. The results were compared in the context of printing speed, surface roughness (Ra), and hardness of printed parts. Results revealed that the multijet fusion process is significantly faster than its counterpart while sacrificing Ra to some extent but the hardness of printed parts is not changed significantly. The selective laser sintering-printed samples had a 15% lower Ra compared with multijet fusion samples. The results also revealed that the multijet fusion process might be able to print composite/multi-materials; however, more research needs to be done.

scholarly journals Multi-Criteria Comparative Analysis of the Use of Subtractive and Additive Technologies in the Manufacturing of Offshore Machinery Components

2020 ◽  
Vol 27 (3) ◽  
pp. 71-81
Author(s):  
Mariusz Deja ◽  
Mieczysław Stanisław Siemiątkowski ◽  
Dawid Zieliński
Keyword(s):  
Additive Manufacturing ◽  
Production Method ◽  
Industrial Applications ◽  
Lead Times ◽  
Efficient Production ◽  
Cnc Milling ◽  
Analytic Hierarchy ◽  
3D Printed ◽  
Offshore Industry ◽  
Manufacturing Technologies

AbstractThe dynamic development of additive manufacturing technologies, especially over the last few years, has increased the range of possible industrial applications of 3D printed elements. This is a consequence of the distinct advantages of additive techniques, which include the possibility of improving the mechanical strength of products and shortening lead times. Offshore industry is one of these promising areas for the application of additive manufacturing. This paper presents a decision support method for the manufacturing of offshore equipment components, and compares a standard subtractive method with an additive manufacturing approach. An analytic hierarchy process was applied to select the most effective and efficient production method, considering CNC milling and direct metal laser sintering. A final set of decision criteria that take into account the specifics of the offshore industry sector are provided.

Rapid Prototyping Technology for Special Pressure Vessels

2018 ◽  
Vol 919 ◽  
pp. 222-229
Author(s):  
Jiří Šafka ◽  
Filip Veselka ◽  
Martin Lachman ◽  
Michal Ackermann
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
3D Model ◽  
Selective Laser Sintering ◽  
Pressure Vessels ◽  
Pressure Test ◽  
Polypropylene Material ◽  
3D Printed ◽  
Manufacturing Technologies ◽  
Made In

The article deals with the topic of 3D printing of pressure vessels and their testing. The main focus of the research was on a 3D model of the pressure vessel, which was originally designed for a student formula racing car project. The described virtual 3D model was designed with regard to 3D printing. The physical model was manufactured using several additive manufacturing technologies. The first technology was FDM using ULTEM 1010 material. The next technology was SLS (Selective Laser Sintering) using polyamide materials (PA3200GF and PA2220). The last technology was SLA (Stereolithography) using a polypropylene material (Durable). Experimental evaluation of the vessels was carried out by a pressure test, which verified the compactness of the 3D printed parts and their possible porosity. At the end of the article, a comparison of each printed model is made in terms of their final price and weight, together with pressure and thermal resistance.

New Production Method by Additive Manufacturing and the Future Possibility

2015 ◽  
Vol 56 (649) ◽  
pp. 118-123
Author(s):  
Mituru ADACHI ◽  
Kenya KURITA ◽  
Yoshihiko NAGATA ◽  
Syuji KOIWAI
Keyword(s):  
Additive Manufacturing ◽  
Production Method ◽  
New Production ◽  
Future Possibility ◽  
The Future

Prospects of Creating Products Using Selective Laser Sintering

2015 ◽  
Vol 770 ◽  
pp. 608-611 ◽  
Author(s):  
A.A. Saprykin ◽  
E.V. Babakova ◽  
E.A. Ibragimov ◽  
D.V. Dudikhin
Keyword(s):  
Rapid Prototyping ◽  
Selective Laser Sintering ◽  
Production Method ◽  
Laser Sintering ◽  
Advantages And Disadvantages ◽  
Different Types

At present, the development of techniques and technology can’t do without innovations in production. This explains the desire of mankind to look for innovative ways to produce different types of products. One of these systems is the production method of selective laser sintering. It is more promising as compared to other rapid prototyping techniques, due to the relative cheapness of materials and time-consuming to produce finished products. This article discusses the method of selective laser sintering, its advantages and disadvantages.

Public and private goods in the development of additive manufacturing capacity

2017 ◽  
Vol 19 (3) ◽  
pp. 482-509 ◽  
Author(s):  
Steven Samford ◽  
Peter Warrian ◽  
Elena Goracinova
Keyword(s):  
Additive Manufacturing ◽  
Small Businesses ◽  
Small Firms ◽  
New Technologies ◽  
Advanced Manufacturing ◽  
Public And Private ◽  
Private Goods ◽  
Enabling Technologies ◽  
Traditional Manufacturing ◽  
Manufacturing Technologies

AbstractThe promotion of additive manufacturing (AM) as a set of enabling technologies has been a prominent feature of new policies seeking to revitalize manufacturing in developed economies. Because of its differences from traditional manufacturing technologies, small businesses, in particular, face high costs in adopting AM methods. How can governments assist small firms and their innovation ecosystems to make significant leaps in enabling technologies? This paper conceptualizes the challenges faced by groups of small enterprises adopting new technologies and a decentralized policy effort to systematically increase the use of advanced manufacturing technologies. In Canada, funding used by community colleges to create applied research centers has been intended to establish anchors for local “industrial commons” around advanced manufacturing methods. By providing both information and working capital to private sector partners, these community college programs should ideally mitigate challenges to the adoption of AM technologies—the so-called “valley of death”—in local ecosystems. There are many successful individual cases of partnership (i.e., private goods); however, this bottom-up approach seems to fail both as a means of promoting vibrant industrial commons (i.e., public goods) and as a coherent national strategy. We trace the challenges of this approach to principal-agent problems associated with layering new programs upon existing organizations, the density of program participants, and the presence of appropriate technologies.

Development of productivity estimation model for mass-customized production by selective laser melting

2018 ◽  
Vol 24 (3) ◽  
pp. 670-676 ◽  
Author(s):  
Urska Kostevsek ◽  
Tomaz Brajlih ◽  
Joze Balic ◽  
Žiga Kadivnik ◽  
Igor Drstvensek
Keyword(s):  
Selective Laser Melting ◽  
Selective Laser Sintering ◽  
Real Life ◽  
Individual Case ◽  
Production Method ◽  
Estimation Model ◽  
Laser Melting ◽  
Content Type ◽  
Manufacturing Technologies ◽  
Dental Applications

Purpose Fixed structures in prosthetic dentistry are highly customized products, manufactured individually for patients who have missing teeth. When choosing the technology for fixed dental structure manufacturing, three viable options are available (precise casting, milling and selective laser melting [SLM]). All these technologies can be used to produce a dental structure from CoCr alloy. Besides materials and availability of technologies, economic efficiency is an important factor when choosing a production method. The purpose of this study is to develop an estimation model for achievable productivity of selective laser melting and compare the results with the productivity of conventional manufacturing. Design/methodology/approach Results presented in this paper are based on manufacturing time analysis of an individual case with each of the technologies mentioned above. Because of the efficiency of SLM is highly dependent on how efficiently the work space of the machine is used, this issue was also included in the research. Data used for research were acquired from practical use of each technology in dental applications. Findings Analysis of achievable SLM manufacturing speeds is based on the previous research into manufacturing speeds of additive manufacturing technologies. The presented results present a model that can be used to estimate the productivity of the SLM technology. Research limitations/implications Research was limited to a specific SLM machine type with a fixed workspace volume. Nevertheless, the results show that any SLM machine has to be used as efficiently as possible to be able to be competitive regarding the conventional manufacturing technologies. Practical implications The presented results show clearly at least a rough estimation of what kind of parts and in what volume will be manufactured with an SLM machine prior to buying one. Social implications Results can help to widen the economically efficient way of running SLM machines, replacing conventional manufacturing for medical applications especially with complicated cases. Originality/value A method is presented to adapt the estimation model to a particular real-life production scenario. This method can be used to establish how efficiently selective laser sintering can be used and if using SLM machine instead of conventional manufacturing would be economically viable.

Additive manufacturing in the wood-furniture sector

2018 ◽  
Vol 29 (2) ◽  
pp. 350-371 ◽  
Author(s):  
Federica Murmura ◽  
Laura Bravi
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Small Scale ◽  
Computer Assisted ◽  
Scale Production ◽  
Content Type ◽  
Advantages And Disadvantages ◽  
Wood Furniture ◽  
Manufacturing Techniques ◽  
Manufacturing Technologies

Purpose In the world economy there is the emergence of advanced manufacturing technologies that are enabling more cost and resource-efficient small-scale production. Among them, additive manufacturing, commonly known as 3D printing, is leading companies to rethink where and how they conduct their manufacturing activities. The purpose of this paper is to focus in the Italian wood-furniture industry to understand if the companies in this sector are investing in additive manufacturing techniques, to remain competitive in their reference markets. The research also attempts to investigate the potential sustainable benefits and limitations to the implementation of 3D printing in this specific sector, considering the companies that have already implemented this technology. Design/methodology/approach Data were collected using a structured questionnaire survey performed on a sample of 234 Italian companies in this sector; 76 companies claimed to use 3D printing in their production system. The questionnaire was distributed via computer-assisted web interviewing and it consisted of four sections. Findings The research has highlighted how Italian 3D companies have a specific profile; they are companies aimed at innovating through the search for new products and product features, putting design and Made in Italy in the first place. They pay high attention to the image they communicate to the market and are highly oriented to the final customer, and to the satisfaction of its needs. Originality/value The study is attempting to expand a recent and unexplored research line on the possible advantages and disadvantages of the implementation of emerging production technologies such as 3D printing.

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