Non-orthogonal Light Timber Frame Design: Using Digital Manufacturing Technologies to Facilitate Circular Economy Architecture

Additive manufacturing technologies have evolved from prototype to part production. Coupling this shift with organizational transformations evolved rapid prototyping industry into Direct Digital Manufacturing (DDM) industry. Any evolution in production systems is now, more than ever before, dependent on sustainability principles. The development of the DDM industry must be guided by these principles, taking the chance it offers to change the production paradigm. Circular Economy (CE) is a shift in the production and resource management model, and one of the ways to work towards sustainability. Coupling DDM with CE principles is thus contributing to change industrial production to a more sustainable one. This paper intends to relate DDM technologies with CE principles, to identify aspects where DDM is contributing to CE, as well as aspects that should be explored further for that purpose. It is observed that DDM can enable optimization of material and energy usage, modify logistics towards de-localized production and recycling and enable prolonged lifespan of products through better access to spare parts, for instance. It is also observed that DDM has good potential to shift materials usage towards natural materials, especially in a context of consumer or local community production, but not so much within the current industrial context. Education is shown to play a pivotal role, since incorporating circular economy principles in educational contexts should spark a shift in consumer perspectives, modifying demand and hence, industrial production.

Download Full-text

Cyber-Physical Systems, Internet of Things, and Big Data in Industry 4.0: Digital Manufacturing Technologies, Business Process Optimization, and Sustainable Organizational Performance

Economics Management and Financial Markets ◽

10.22381/emfm14320193 ◽

2019 ◽

Vol 14 (3) ◽

pp. 23

Keyword(s):

Big Data ◽

Internet Of Things ◽

Organizational Performance ◽

Process Optimization ◽

Industry 4.0 ◽

Cyber Physical Systems ◽

Digital Manufacturing ◽

Physical Systems ◽

Manufacturing Technologies ◽

Business Process Optimization

Download Full-text

A Development of the Visco-Elastic Damper for Timber Structure and a Suggestion of the Technological Design Assistance System

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.778.714 ◽

2013 ◽

Vol 778 ◽

pp. 714-721

Author(s):

Katsuhiko Kohara ◽

Takeshi Nomura ◽

Kazuyoshi Koumoto

Keyword(s):

Seismic Response ◽

Elastic Body ◽

Structural Model ◽

Time History ◽

Timber Structure ◽

Response Analysis ◽

Frame Design ◽

Timber Frame ◽

Loading Tests ◽

Controlled Structure

Our research team developed a brace type and an angle brace type of the visco-elastic damper on seismic-response controlled structure for timber structure. We performed various dependence evaluations by the materials examination of the styrene olefin-based visco-elastic body which we developed newly. We made a structural model using the performance that loading tests in timber frame. We inspected the validity of the structural model. In addition, we built a technical support system for damper setting by the time history response analysis so that a general design architect was easy to use the damper. We could express dynamics properties of visco-elastic body properties by Voigt model, and the structural model almost accorded with an examination property value. We made a structural model of the whole frame system by Kb of installation rigidity obtained from loading tests in timber frame. Because a design level almost accorded with experimental value, the validity of the frame design on seismic-response controlled structure in consideration of the dependence (distortion, frequency, temperature) of the visco-elastic body was confirmed. This visco-elastic damper on seismic-response controlled structure acquired minister authorization of Ministry of Land, Infrastructure and Transport. In addition, this damper acquired the certification of the Japan Building Disaster Prevention Association.

Download Full-text

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

Proceedings of the Institution of Mechanical Engineers Part C Journal of Mechanical Engineering Science ◽

10.1177/0954406219861664 ◽

2019 ◽

Vol 234 (14) ◽

pp. 2741-2749 ◽

Cited By ~ 9

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.

Download Full-text

Ceramic Workshop Adapted with 3D Technologies to Improve the Self-Esteem of People with Disabilities

Sustainability ◽

10.3390/su12219063 ◽

2020 ◽

Vol 12 (21) ◽

pp. 9063

Author(s):

Alejandro Bonnet de León ◽

Cecile Meier ◽

Jose Luis Saorin

Keyword(s):

Simple Technique ◽

Low Cost ◽

Self Esteem ◽

Digital Tools ◽

Digital Manufacturing ◽

Observation Data ◽

3D Scanner ◽

3D Printed ◽

People With Intellectual Disabilities ◽

Manufacturing Technologies

This paper describes a process to adapt tools in an artistic ceramic workshop in which custom molds are created using low-cost digital manufacturing technologies. The digitalization of busts by a 3D scanner and their transformation into 3D printed molds is a simple technique that only requires basic digital tools. These molds were used in the artistic ceramic workshop of the Psychopedagogical Center of the Order of San Juan de Dios in Tenerife, where the authors worked with people with intellectual disabilities to make ceramic pieces. These people, in most cases, do not have the necessary skills for detail modeling; however, with the help of digital manufacturing technologies, they can produce molds of their own faces and create personalized figures autonomously. In this way, they increase their self-esteem and autonomy and discover new possibilities for making products; as a result, they feel fulfilled and confirm that they can be part of the creation process. To obtain an evaluation of the activity, a qualitative study was carried out, and observation data were collected. The attitudes of the users were compared with observations made during a similar activity without using molds or technologies. It was observed that the attitude of the participants significantly improved when they obtained more satisfactory results with the use of molds.

Download Full-text

Evolution and rationalization of timber frame design in Istanbul in the second half of the nineteenth century

Journal of Architectural Conservation ◽

10.1080/13556207.2017.1330384 ◽

2017 ◽

Vol 23 (3) ◽

pp. 190-210 ◽

Cited By ~ 1

Author(s):

Damla Acar

Keyword(s):

Nineteenth Century ◽

Frame Design ◽

Timber Frame

Download Full-text

Defab: Architecture for a Circular Economy

10.26686/wgtn.17135558 ◽

2021 ◽

Author(s):

◽

Gerard Finch

Keyword(s):

Circular Economy ◽

Large Scale ◽

Toxic Waste ◽

Residential Housing ◽

Construction Methods ◽

Large Scale Analysis ◽

Waste Production ◽

Useful Life ◽

Manufacturing Technologies ◽

Design Proposal

<p>Mainstream construction practices result in the production of large quantities of toxic waste at all stages of a building’s life cycle. This can be attributed to widespread adoption of irreversible fixing methods that prioritise rapid assembly, bespoke design practices and the increased use of ‘low-value’ materials. Unprecedented levels of consumption and waste production are set to continue as demand for residential housing in New Zealand grows rapidly. In response to these concerns, this thesis aims to develop innovative construction methods that facilitate the development of a Circular Economy for the building industry. The resulting design proposal is a modular architectural construction system with integrated jointing capacity, redundant expansion potential and details that enable the effective separation of discrete building layers. This proposed assembly specification calls for the mass-standardisation of structural components to promote economically viable material retrieval and resale at the end of a building’s useful life. Computer-aided manufacturing technologies are used to facilitate the incorporation of sophisticated reusable assembly parameters into connection details on a large scale. Analysis of the proposed solution indicates that waste over an entire building’s life can be reduced by more than 94% through the deployment of alternative architectural assemblies. Additionally, optimised assemblies enable deconstruction times to be reduced by up to 30% versus conventional light timber framing.</p>

Download Full-text