scholarly journals Methods and Principles of Product Design for Small-Scale Production Based on 3D Printing

2019 ◽  
Vol 1 (1) ◽  
pp. 789-798
Author(s):  
Jure Salobir ◽  
Jože Duhovnik ◽  
Jože Tavčar
Keyword(s):  
3D Printing ◽  
Development Process ◽  
Product Development Process ◽  
Small Scale ◽  
Systematic Research ◽  
Scale Production ◽  
Design Time ◽  
The Cost ◽  
Assembly Operations ◽  
Insight Into

AbstractTechnology of 3D printing is opening the possibility for small-scale production in quantities between ten and several hundred pieces. The technology of adding material enables the production of complex and integrated functional concepts in a single-pass process, which consequently potentially reduces the need for assembly operations. Design approaches and manufacturing processing are not mastered well because of a constant stream of new materials and manufacturing options. Well-designed products need to consider attributes of 3D printing as early as the conceptual phase. The cost of the product can be reduced with a systematic research and considering principles for small-scale production. In a cheaper, alternative production process the quality range of products is often lower. It has to be compensated with appropriate construction solutions which are less tolerance-sensitive. Therefore, in order to support the designer, to reduce the costs and design time of the product, a computer program was created to provide the user with an insight into the appropriate 3D printing technology. For simplifying the use, the program is also integrated into the product development process.

Research of 3D Printing Modes of Feedstock for Metal Injection Molding

2020 ◽  
Vol 992 ◽  
pp. 461-466
Author(s):  
A.Yu. Korotchenko ◽  
D.E. Khilkov ◽  
M.V. Tverskoy ◽  
A.A. Khilkova
Keyword(s):  
3D Printing ◽  
Injection Molding ◽  
Metal Injection Molding ◽  
Small Scale ◽  
Print Quality ◽  
Scale Production ◽  
Fused Filament Fabrication ◽  
Factors Affecting ◽  
The Cost

In this work, to reduce the cost of production of parts using injection molding metal technology (MIM technology), it is proposed to use additive technologies (AT) for the manufacture of green parts. The use of AT allows us to abandon expensive molds and expand the field of use of the MIM of technology in single and small-scale production. For manufacture of green parts, the technology of manufacturing fused filament (Fused Filament Fabrication – FFF) is offered. The original composition of the metal powder mix (feedstock) and the filament manufacturing modes for 3D printing have been developed for the FFF technology. The cost of filament is much lower than its analogs. The factors affecting the print quality of green part are considered. All factors are divided into two groups depending on the possibility of their change during printing. The research of the influence of the coefficient filament supply on the geometry of green parts during 3D printing is presented.

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.

scholarly journals Cost effective meter of moisture integral parameters of the atmospheric column

2021 ◽  
pp. 24-33
Author(s):  
N. V. Ruzhentsev ◽  
S. S. Zhyla ◽  
V. V. Pavlikov ◽  
V. V. Kosharsky ◽  
G. S. Cherepnin
Keyword(s):  
Millimeter Wave ◽  
Remote Monitoring ◽  
Propagation Model ◽  
Small Scale ◽  
Physical Parameters ◽  
Scale Production ◽  
Atmospheric Moisture ◽  
Atmospheric Column ◽  
The Cost ◽  
Element Base

Continuous remote monitoring of the atmospheric physical parameters is an urgent task for solving the issues related to meteorology, climatology, artificial influence on clouds, studying the physical parameters of cloud cover etc. In the developed countries such issues are solved using science-driven technologies of millimeter wave range radiometry. They allow, in particular, quick restoration of the values of total content and effective temperature of droplet and vaporous moisture in the atmospheric column, and distinguishing the areas with crystalline, droplet or vaporous water phases. This work aims at substantiating, by calculation and experiment, the possibility of large-scale solving the problems of continuous remote monitoring of the studied atmospheric moisture parameters using the method of centimetre wavelength range radiometry. To determine the best pair of frequencies for restoring the atmospheric moisture parameters based on radiometric data of remote sensing the linear absorption coefficients were calculated for clear atmosphere, for cloudy atmosphere depending on the temperature of drops and for rainfalls of various intensities for 4, 12, 20, 40 and 94 GHz frequencies. In order to calculate these data, we used a well-known MPM model (Atmospheric Millimeter-Wave Propagation Model). At the same time, calculation of the altitude profiles of the atmospheric meteorological parameters was carried out based on the ERA-15 model. Comparison of the data obtained by calculation, taking into account the progress of the technical parameters of the serial element base, indicated a possibility of solving the above problems in the centimetre wavelength as well. The research presents a description of the diagram and technical solutions, as well as the appearance of a two-frequency radiometric system with 1.5 cm and 2.5 cm ranges created at the National Aerospace University (KhAI) on the basis of an easily accessible modern element base and full-scale tests' results. The budget-friendly focus of the described product allows for radiophysical measurement with a sensitivity of radiometers exceeding 0.01 K while ensuring the cost of small-scale production of the radio technical part of the system, comparable to the cost of TV converters commonly used in everyday life.

scholarly journals Can 3D Printing Bring Droplet Microfluidics to Every Lab?—A Systematic Review

Micromachines ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 339
Author(s):  
Nafisat Gyimah ◽  
Ott Scheler ◽  
Toomas Rang ◽  
Tamas Pardy
Keyword(s):  
Systematic Review ◽  
3D Printing ◽  
Microfluidic Chip ◽  
Performance Metrics ◽  
Droplet Microfluidics ◽  
Small Scale ◽  
Scale Production ◽  
Chemical Application ◽  
Chip Fabrication ◽  
3D Printed

In recent years, additive manufacturing has steadily gained attention in both research and industry. Applications range from prototyping to small-scale production, with 3D printing offering reduced logistics overheads, better design flexibility and ease of use compared with traditional fabrication methods. In addition, printer and material costs have also decreased rapidly. These advantages make 3D printing attractive for application in microfluidic chip fabrication. However, 3D printing microfluidics is still a new area. Is the technology mature enough to print complex microchannel geometries, such as droplet microfluidics? Can 3D-printed droplet microfluidic chips be used in biological or chemical applications? Is 3D printing mature enough to be used in every research lab? These are the questions we will seek answers to in our systematic review. We will analyze (1) the key performance metrics of 3D-printed droplet microfluidics and (2) existing biological or chemical application areas. In addition, we evaluate (3) the potential of large-scale application of 3D printing microfluidics. Finally, (4) we discuss how 3D printing and digital design automation could trivialize microfluidic chip fabrication in the long term. Based on our analysis, we can conclude that today, 3D printers could already be used in every research lab. Printing droplet microfluidics is also a possibility, albeit with some challenges discussed in this review.

Measuring Value of Prototypes During Product Development

2000 ◽  
Author(s):  
Christopher G. Franck ◽  
David W. Rosen
Keyword(s):  
Product Development ◽  
Rapid Prototyping ◽  
New Product Development ◽  
Development Process ◽  
Cost Savings ◽  
Quantitative Measure ◽  
Value Theory ◽  
Product Development Process ◽  
Cost Ratio ◽  
The Cost

Abstract Rapid prototyping has become a key factor in reducing the cost and time to market associated with new product development. Unfortunately a lot of the potential time and cost savings associated with rapid prototyping are lost due to the use of processes that are incompatible with the type of information needed by the designer at any given point in the product development process. A quantitative measure is proposed in this paper for the value of a prototype at any given point in the product development process, where value is defined as a function of benefit (information learned) of a prototype and the cost of the prototype. The value measure is utilized to suggest prototyping technologies to aid the designer in selecting appropriate technologies. Three different value metrics were developed: one based on the benefit-to-cost ratio, one on utility theory, and one on value theory. The value metrics are applied to an industrial example, a cash register till, and compared on their ability to suggest appropriate prototyping technologies along the design time-line.

Preferred Vehicle Scaling

2007 ◽  
Author(s):  
Michael L. Jonson
Keyword(s):  
Systems Engineering ◽  
System Performance ◽  
Geometric Series ◽  
Small Scale ◽  
Standard Material ◽  
Electrical Wire ◽  
Scale Models ◽  
Electro Magnetic ◽  
The Cost ◽  
Insight Into

Properly designed and geometrically similar small-scale models can provide insight into component and system performance of large vehicles for a variety of engineering disciplines for a fraction of the cost compared to full scale fabrication and testing. Using the density, specific heat, magnetic permeability of the fluid, the rotation rate, and the size, the author provides non-dimensional performance properties broadly encompassing the hydrodynamic, acoustic, electro-magnetic, thermal, and structural fields. The preferred numbers based on a geometric series as devised by Renard are introduced. The author then provides a method for defining a mean and standard deviation of a size differences from a standard geometric series. In particular, statistics for customary and metric material specifications of sheet metal, square and round stock, electrical wire, fasteners, beams, and pipes are quantified. The study concludes that preferred numbers are best for standard material sizes and scales and suggests potential procedures for improving systems engineering.

Stress State of 3D-Printed Plastic Dies at Thin-Sheet Aluminum Bending

2021 ◽  
Vol 316 ◽  
pp. 110-115
Author(s):  
L.B. Aksenov ◽  
I.Y. Kononov ◽  
N.G. Kolbasnikov
Keyword(s):  
3D Printing ◽  
Mechanical Characteristics ◽  
Plastic Material ◽  
Thin Sheet ◽  
Small Scale ◽  
Scale Production ◽  
Sheet Bending ◽  
Sheet Aluminum ◽  
3D Printed ◽  
Positive Properties

The paper deals with the problems and prospects of forming thin-sheet blanks, using ABS plastic dies, made by 3D printing. This technology combines the positive properties of plastic material and 3D-printing. The mechanical characteristics of the plastic were determined experimentally. On the basis of computer modeling, the dependence between the angle of bending the blank and the stresses arising in the dies is established. As a result of computer simulation and physical experiment, the value of the maximum thickness 0.5 mm for the aluminum 3003 blank is obtained. In this case, there is no plastic deformation of the plastic tool. The use of plastic dies does not require lubrication. The technology of sheet bending, using a plastic tool, can be implemented with the greatest efficiency in single and small-scale production.

scholarly journals Design, Aerodynamic Calculation and Manufacturing using CFRP and Additive Manufacturing of a small Tilt-Rotor UAV for Railway Inspection

2020 ◽  
Vol 12 (4) ◽  
pp. 111-125
Author(s):  
Raluca MAIER ◽  
Andrei MANDOC ◽  
Stefan GHERASIM ◽  
Stefan PETCULESCU ◽  
David MANOLACHE ◽  
...  
Keyword(s):  
3D Printing ◽  
Unmanned Aerial Vehicle ◽  
Development Process ◽  
Low Cost ◽  
Low Complexity ◽  
Small Scale ◽  
Tilt Rotor ◽  
Market Requirements ◽  
Aerial Vehicle ◽  
Low Cost Manufacturing

The present paper aims to develop a small scale Unmanned Aerial Vehicle for railway inspection. The development process and structure manufacturing aimed at a low complexity technological process both to meet market requirements and to be economically efficient. To define the architectural structure and its components in the design process, a NACA 0024 aerodynamic profile was selected out of two proposed airfoils. The novelty of this concept is the double benefit of the wing, which serves as a cargo bay while uses a low-cost manufacturing technology, incorporating the 3D printing process. Further, a simplified preliminary aerodynamic calculation was performed, the model was manufactured using composite materials reinforced with carbon fibre while other key components have been obtained using the 3D printing technology. In the end, the manufacturing process was a success and the unmanned aerial vehicle was designed and manufactured specifically that its flight envelope meets the requirements of the mission.

scholarly journals PROTOTYPING OF MICROWAVE DEVICES WITH SPECIFIED ELECTRODYNAMIC CHARACTERISTICS USING ADDITIVE 3D PRINTING TECHNOLOGY

2019 ◽  
Vol 7 (1) ◽  
pp. 80-101
Author(s):  
S. V. Kharalgin ◽  
G. V. Kulikov ◽  
A. B. Kotelnikov ◽  
M. V. Snastin ◽  
E. M. Dobychina
Keyword(s):  
Electromagnetic Wave ◽  
3D Printing ◽  
Microwave Devices ◽  
Small Scale ◽  
Scale Production ◽  
Conductive Layer ◽  
Printing Technology ◽  
Adhesion Properties ◽  
Maximum Extent ◽  
3D Printing Technology

The technology of additive 3D printing is widely used in various branches of science and industry. The purpose of the research presented in the article is to evaluate and study the possibilities of 3D printing technology applied to the manufacture of microwave devices and to compare the characteristics of the devices obtained with the characteristics used in the electrodynamic model. Printing metal parts is an overly expensive process in small-scale production, both in terms of the cost of equipment and in relation to the materials used. In this work, parts for microwave devices were made of plastic with the aim of cheapening. Relatively cheap polymers used in 3D printing are dielectrics. Therefore, to limit the propagation of an electromagnetic wave in all directions it was necessary to create a conductive layer on the surface of printed models. The article: identifies the FFF print parameters that affect to the maximum extent the propagation of an electromagnetic wave; describes the process and problems encountered when printing and galvanizing parts; discusses the steps of modeling devices and measuring their parameters. The characteristics of microwave devices made by 3D printing technology were investigated. An assessment of the possibilities of manufacturing antennas and coaxial-waveguide transitions using this technology was carried out. To implement the conductive layer on the surface of the models, the method of galvanization was used. The adhesion properties of the obtained metallic coatings were investigated. The results of electromagnetic modeling are given. The parameters that affect to the maximum extent the quality of the implemented devices were determined. Laboratory measurements of the characteristics of produced devices were conducted. The simulation results of the examined devices are in good agreement with the experimental characteristics of the made models using 3D printing technology. A complete production cycle of microwave devices was carried out: design, simulation, sample production, and validation of characteristics. Prospects for the further development of the described technology include a variation of the types of plastics used as a substrate, the application of finishing decorative and functional coatings, an improvement in the adhesion properties of the applied copper layer with the substrate.

Sign in / Sign up

Export Citation Format

Share Document