scholarly journals Design to Degrade

2021 ◽  
Author(s):  
◽  
Zara Fong

<p>Birth, growth, death and decay constitute an inherent cycle in nature that maintains balance and enables ecosystems to adapt to external changes. Although death and decay are essential for birth and growth of the following generations, these disappearing stages are often ignored and unappreciated in manmade cultures and practices. Especially in design, in the era of mass production, the pursuit of quantity and uniformity inevitably link to many environmental issues. As a desperate response, bio-based materials have recently gained attention as alternatives to fossil-derived materials or new resources for industry, and rapid advancement of additive manufacturing (AM) has revolutionised conventional methods of manufacturing, enabling low volume, quality-focused production. This research discusses the pioneering incorporation of the stages of death and decay into design practices, exploiting a novel opportunity provided by the two key innovations, AM technologies and bio-based materials. A series of digital plants which employ and undergo the two degenerative stages are designed and produced using digital and scientific processes, and their transformative degradation induced by environmental stimuli, including humidity and UV, is demonstrated. The programmed visual and physical deformations suggest that a purposeful and systematic introduction of the two stages to the current design and manufacturing practices could offer a more sustainable and responsible approach to creation and production. They also exhibit new possibilities for digital processes, including parametric modelling and 3D-printing, through an integrative combination with bio-based materials.</p>

2021 ◽  
Author(s):  
◽  
Zara Fong

<p>Birth, growth, death and decay constitute an inherent cycle in nature that maintains balance and enables ecosystems to adapt to external changes. Although death and decay are essential for birth and growth of the following generations, these disappearing stages are often ignored and unappreciated in manmade cultures and practices. Especially in design, in the era of mass production, the pursuit of quantity and uniformity inevitably link to many environmental issues. As a desperate response, bio-based materials have recently gained attention as alternatives to fossil-derived materials or new resources for industry, and rapid advancement of additive manufacturing (AM) has revolutionised conventional methods of manufacturing, enabling low volume, quality-focused production. This research discusses the pioneering incorporation of the stages of death and decay into design practices, exploiting a novel opportunity provided by the two key innovations, AM technologies and bio-based materials. A series of digital plants which employ and undergo the two degenerative stages are designed and produced using digital and scientific processes, and their transformative degradation induced by environmental stimuli, including humidity and UV, is demonstrated. The programmed visual and physical deformations suggest that a purposeful and systematic introduction of the two stages to the current design and manufacturing practices could offer a more sustainable and responsible approach to creation and production. They also exhibit new possibilities for digital processes, including parametric modelling and 3D-printing, through an integrative combination with bio-based materials.</p>


2021 ◽  
Vol 1199 (1) ◽  
pp. 012094
Author(s):  
M Šašala ◽  
L Hrivniak ◽  
J Svetlík ◽  
Š Ondočko

Abstract For crayons manufacturing are often used big mold from steel. These molds are good for mass production, however they tend to be expensive and not suitable for low volume of production. Goal of this paper is to figure out, if these molds can be created by additive manufacturing technique, what materials are suitable for the job and how final products compare with products on the market manufactured with traditional methods.


2021 ◽  
Vol 5 (5) ◽  
pp. 119
Author(s):  
Stelios K. Georgantzinos ◽  
Georgios I. Giannopoulos ◽  
Panteleimon A. Bakalis

This paper aims to establish six-dimensional (6D) printing as a new branch of additive manufacturing investigating its benefits, advantages as well as possible limitations concerning the design and manufacturing of effective smart structures. The concept of 6D printing, to the authors’ best knowledge, is introduced for the first time. The new method combines the four-dimensional (4D) and five-dimensional (5D) printing techniques. This means that the printing process is going to use five degrees of freedom for creating the final object while the final produced material component will be a smart/intelligent one (i.e., will be capable of changing its shape or properties due to its interaction with an environmental stimulus). A 6D printed structure can be stronger and more effective than a corresponding 4D printed structure, can be manufactured using less material, can perform movements by being exposed to an external stimulus through an interaction mechanism, and it may learn how to reconfigure itself suitably, based on predictions via mathematical modeling and simulations.


Author(s):  
Zhuming Bi ◽  
Guoping Wang ◽  
Joel Thompson ◽  
David Ruiz ◽  
John Rosswurm ◽  
...  

Author(s):  
N. Knofius ◽  
M. C. van der Heijden ◽  
A. Sleptchenko ◽  
W. H. M. Zijm

Abstract The low-volume spare parts business is often identified as a potential beneficiary of additive manufacturing (AM) technologies. Currently, high AM unit costs or low AM part reliabilities deem the application of AM economical inferior to conventional manufacturing (CM) methods in most cases. In this paper, we investigate the potential to overcome these deficiencies by combining AM and CM methods. For that purpose, we develop an approach that is tailored toward the unique characteristics of dual sourcing with two production methods. Opposed to the traditional dual sourcing literature, we consider the different failure behavior of parts produced by AM and CM methods. Using numerical experiments and a case study in the aviation industry, we explore under which conditions dual sourcing with AM performs best. Single sourcing with AM methods typically leads to higher purchasing and maintenance costs while single sourcing with CM methods increases backorder and holding costs. Savings of more than 30% compared to the best single sourcing option are possible even if the reliability or unit costs of a part sourced with AM are three times worse than for a CM part. In conclusion, dual sourcing methods may play an important role to exploit the benefits of AM methods while avoiding its drawbacks in the low-volume spare parts business.


Author(s):  
Ivan Molnár ◽  
Ladislav Morovič

Abstract The paper discusses the use of 3D digitization and additive manufacturing technologies in the field of medicine. In addition, applications of the use of 3D digitization and additive manufacturing methods are described, focusing on the design and manufacture of individual medical aids. Subsequently, the process of designing and manufacturing of orthopedic aids using these technologies is described and the advantages of introducing the given technologies into the design and manufacturing processes in the medicine sector are presented.


2021 ◽  
pp. 147807712110300
Author(s):  
Ali Baghi ◽  
Saleh Kalantari ◽  
Aryan Baghi

The design and manufacturing of concrete elements need to be reconsidered in light of current trends in architectural geometry. Today, there is a movement toward greater customization and adaptability of concrete elements using “reconfigurable formworks” and “additive manufacturing.” Our study approached the issue of fabricating non-standardized concrete elements from the perspective of a “reconfigurable fabrication platform.” Specifically, we developed a method of fabricating geometrically diverse concrete joints by combining flexible pressure-enduring tubes with a rigid mechanism, resulting in an adaptive concrete-casting machine. This platform, which we named “Flexi-node,” can be used in conjunction with a relevant fabrication-aware digital design tool. Users can computationally design and fabricate a great variety of concrete joints using just one mold, with a minimum of material waste and with no distortion from hydrostatic pressure as would typically occur in a fully flexible formwork.


2020 ◽  
Vol 26 (4) ◽  
pp. 669-687 ◽  
Author(s):  
Sathies T. ◽  
Senthil P. ◽  
Anoop M.S.

Purpose Fabrication of customized products in low volume through conventional manufacturing incurs a high cost, longer processing time and huge material waste. Hence, the concept of additive manufacturing (AM) comes into existence and fused deposition modelling (FDM), is at the forefront of researches related to polymer-based additive manufacturing. The purpose of this paper is to summarize the research works carried on the applications of FDM. Design/methodology/approach In the present paper, an extensive review has been performed related to major application areas (such as a sensor, shielding, scaffolding, drug delivery devices, microfluidic devices, rapid tooling, four-dimensional printing, automotive and aerospace, prosthetics and orthosis, fashion and architecture) where FDM has been tested. Finally, a roadmap for future research work in the FDM application has been discussed. As an example for future research scope, a case study on the usage of FDM printed ABS-carbon black composite for solvent sensing is demonstrated. Findings The printability of composite filament through FDM enhanced its application range. Sensors developed using FDM incurs a low cost and produces a result comparable to those conventional techniques. EMI shielding manufactured by FDM is light and non-oxidative. Biodegradable and biocompatible scaffolds of complex shapes are possible to manufacture by FDM. Further, FDM enables the fabrication of on-demand and customized prosthetics and orthosis. Tooling time and cost involved in the manufacturing of low volume customized products are reduced by FDM based rapid tooling technique. Results of the solvent sensing case study indicate that three-dimensional printed conductive polymer composites can sense different solvents. The sensors with a lower thickness (0.6 mm) exhibit better sensitivity. Originality/value This paper outlines the capabilities of FDM and provides information to the user about the different applications possible with FDM.


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