Manufacturing Education for Society 5.0

2020 ◽  
pp. 74-97
Author(s):  
Jennifer Loy
Keyword(s):  
Higher Education ◽  
Additive Manufacturing ◽  
3D Printing ◽  
Data Collection ◽  
Physical Space ◽  
Digital Fabrication ◽  
Communication Tools ◽  
Equitable Distribution ◽  
Curriculum And Pedagogy ◽  
Current Systems

The last 20 years have brought significant developments to digital fabrication technology, known as additive manufacturing (3D printing), and it has finally started to shed its prototyping mantel in favor of an industrial one. Yet its innovations are in danger of being subsumed into existing commercial practices, as society arguably continues to underestimate its ability, in conjunction with data collection, analysis, and communication tools, to disrupt current systems and enable a more equitable distribution of manufacturing wealth, capability, and capacity. This chapter highlights the potential of emerging industrial technologies to support a shift towards a more human-centered, responsible society where social and environmental problems are addressed through systems that maximises cyberspace and physical space integration, through the reframing of higher education engineering curriculum and pedagogy for manufacturing in Society 5.0.

scholarly journals Reinventing Staircases for Thermoplastic Additive Manufacturing

2021 ◽  
pp. 349-358
Author(s):  
Mirko Daneluzzo ◽  
Michele Daneluzzo
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Digital Fabrication ◽  
Functional Expression ◽  
Complex Geometries ◽  
Manufacturing Technologies ◽  
Ongoing Project

AbstractThe paper presents an ongoing project focusing on the application of additive manufacturing technologies for the design of staircases. Additive digital fabrication allows architects to reinvestigate materials, processes, and creates new design opportunities to explore novel aesthetical and functional expression in architecture, enabling a reinterpretation of the typology of the staircase, using thermoplastic materials. This paper reviews the opportunities and challenges of using 3D printing for fabricating custom stairs with complex geometries in two studied configurations.

Deconstructing Merit: Dalit Presence in Higher Education

2021 ◽  
pp. 2455328X2199573
Author(s):  
Kanika Singh
Keyword(s):  
Higher Education ◽  
Data Collection ◽  
Public University ◽  
Primary Objective ◽  
Primary Data ◽  
Caste Discrimination ◽  
Current Usage ◽  
Admission Policies ◽  
Indian Higher Education ◽  
Current Systems

Higher education is exclusionary in principle but it must not perpetuate injustice as it is antithetical to the spirit of academia. This article aims to elaborate on the condition of Indian higher education specifically in response to the question of accessibility. The current systems designed to screen students indirectly favour individuals with inherent privileges. These privileges are converted into socially sanctioned claim on opportunities through the merit discourse. What does this entail for Dalits whose academic performance and potential is questioned based on flawed systems and methods? The primary objective of this article is to understand the complexities in the current usage of merit in Indian admission policies in higher education. The article presents multiple interpretations of merit as understood by the respondents during the primary data collection from a public university. A detailed discussion on the themes culled out from the data collection will highlight the larger problem of fetishizing merit without understanding its deeply problematic structure. The article also investigates the invisibility of caste discrimination and hypervisibility of caste otherwise in university space against the meritocratic principle that is considered to be a better alternative to caste-based quotas with respect to admission policies in higher education institutions.

scholarly journals Building Envelope Prefabricated with 3D Printing Technology

2021 ◽  
Vol 13 (16) ◽  
pp. 8923
Author(s):  
Stelladriana Volpe ◽  
Valentino Sangiorgio ◽  
Andrea Petrella ◽  
Armando Coppola ◽  
Michele Notarnicola ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Industrial Revolution ◽  
Potassium Phosphate ◽  
Digital Fabrication ◽  
Building Envelope ◽  
Manufacturing Technology ◽  
Construction Automation ◽  
Additive Manufacturing Technology ◽  
Precast Elements

The Fourth Industrial Revolution represents the beginning of a profound change for the building sector. In the last decade, the perspective of shapes, materials, and construction techniques is evolving fast due to the additive manufacturing technology. On the other hand, even if the technology is growing fast and several 3D printed buildings are being developed worldwide, the potential of concrete 3D printing in building prefabrication remains unexplored. Consequently, the application of new digital fabrication technologies in the construction industry requires a redesign of the construction process and its components. This paper proposes a novel conception, design, and prototyping of a precast building envelope to be prefabricated with extrusion-based 3D concrete printing (3DCP). The new design and conception aim to fully exploit the potential of 3D printing for prefabricated components, especially in terms of dry assembly, speed of implementation, reusability, recyclability, modularity, versatility, adaptability, and sustainability. Beyond the novel conceptual design of precast elements, the research investigated the 3D printable cementitious material based on a magnesium potassium phosphate cement (MKPC), which was devised and tested to ensure good performances of the proposed component. Finally, a prototype has been realised in scale with additive manufacturing technology in order to verify the printability and to optimize the extruder path. This study leads us to believe that the combined use of prefabricated systems, construction automation, and innovative materials can decisively improve the construction industry’s sustainability in the future.

scholarly journals Additive Manufacturing of Reinforced Concrete—Development of a 3D Printing Technology for Cementitious Composites with Metallic Reinforcement

2020 ◽  
Vol 10 (11) ◽  
pp. 3791 ◽  
Author(s):  
Martin Classen ◽  
Jan Ungermann ◽  
Rahul Sharma
Keyword(s):  
Reinforced Concrete ◽  
Additive Manufacturing ◽  
3D Printing ◽  
Three Dimensional ◽  
Welding Process ◽  
Plain Concrete ◽  
Digital Fabrication ◽  
Extrusion Process ◽  
Rc Structures ◽  
Stud Welding

Reinforced concrete (RC) is by far the most widely used composite material in the world. Despite the enormous economic importance of RC construction, there is a lack of viable concepts for its digital fabrication. While 3D printing of plain concrete has been pushed forward by a growing research community in recent years, methods for integration of steel reinforcement have only scarcely been researched and little attention has been payed to meet the practical requirements of construction sites and prefabrication plants. Therefore, full-scale implementations of current approaches are hardly available. Based on both, a sound review of R&D for digital fabrication of RC structures and an analysis of practical requirements, the present paper proposes a novel 3D printing process for RC structures, called Additive Manufacturing of Reinforced Concrete (AMoRC), viable for real-world application. In this hybrid process, consisting of an intermittent stud welding process and a continuous concrete extrusion process, segmented steel reinforcing bars are joined to form a three-dimensional reinforcement mesh and simultaneously encased with extruded concrete. The paper describes the conceptual design and development of the process and demonstrates the results of preliminary investigations on its feasibility. As AMoRC enables the operation of rebar welding and concrete extrusion process with synchronized feed rates, combination of both processes in one hybrid print head for digital fabrication of RC is a key-advantage of the proposed method.

scholarly journals Efficient 3D printing via photooxidation of ketocoumarin based photopolymerization

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Xiaoyu Zhao ◽  
Ye Zhao ◽  
Ming-De Li ◽  
Zhong’an Li ◽  
Haiyan Peng ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Visible Light ◽  
Light Exposure ◽  
Three Dimensional ◽  
3D Printer ◽  
Light Penetration ◽  
Viable Solution

AbstractPhotopolymerization-based three-dimensional (3D) printing can enable customized manufacturing that is difficult to achieve through other traditional means. Nevertheless, it remains challenging to achieve efficient 3D printing due to the compromise between print speed and resolution. Herein, we report an efficient 3D printing approach based on the photooxidation of ketocoumarin that functions as the photosensitizer during photopolymerization, which can simultaneously deliver high print speed (5.1 cm h−1) and high print resolution (23 μm) on a common 3D printer. Mechanistically, the initiating radical and deethylated ketocoumarin are both generated upon visible light exposure, with the former giving rise to rapid photopolymerization and high print speed while the latter ensuring high print resolution by confining the light penetration. By comparison, the printed feature is hard to identify when the ketocoumarin encounters photoreduction due to the increased lateral photopolymerization. The proposed approach here provides a viable solution towards efficient additive manufacturing by controlling the photoreaction of photosensitizers during photopolymerization.

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