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Article
Publication date: 27 May 2024

Hasan Baş, Fatih Yapıcı and Erhan Ergün

The use of additive manufacturing in many branches of industry is increasing significantly because of its many advantages, such as being able to produce complex parts that cannot…

Abstract

Purpose

The use of additive manufacturing in many branches of industry is increasing significantly because of its many advantages, such as being able to produce complex parts that cannot be produced by classical methods, using fewer materials, easing the supply chain with on-site production, being able to produce with all kinds of materials and producing lighter parts. The binder jetting technique, one of the additive manufacturing methods researched within the scope of this work, is predicted to be the additive manufacturing method that will grow the most in the next decade, according to many economic reports. Although additive manufacturing methods have many advantages, they can be slower than classical manufacturing methods regarding production speed. For this reason, this study aims to increase the manufacturing speed in the binder jetting method.

Design/methodology/approach

Adaptive slicing and variable binder amount algorithm (VBAA) were used to increase manufacturing speed in binder jetting. Taguchi method was used to optimize the layer thickness and saturation ratio in VBAA. According to the Taguchi experimental design, 27 samples were produced in nine different conditions, three replicates each. The width of the samples in their raw form was measured. Afterward, the samples were sintered at 1,500 °C for 2 h. After sintering, surface roughness and density tests were performed. Therefore, the methods used have been proven to be successful. In addition, measurement possibilities with image processing were investigated to make surface roughness measurements more accessible and more economical.

Findings

As a result of the tests, the optimum printing condition was decided to be 180–250 µm for layer thickness and 50% for saturation. A separate test sample was then designed to implement adaptive slicing. This test sample was produced in three pieces: adaptive (180–250 µm), thin layer (180 µm) and thick layer (250 µm) with the determined parameters. The roughness values of the adaptive sliced sample and the thin layer sample were similar and better than the thick layer sample. A similar result was obtained using 12.31% fewer layers in the adaptive sample than in the thin layer sample.

Originality/value

The use of adaptive slicing in binder jetting has become more efficient. In this way, it will increase the use of adaptive slicing in binder jetting. In addition, a cheap and straightforward image processing method has been developed to calculate the surface roughness of the parts.

Details

Rapid Prototyping Journal, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1355-2546

Keywords

Article
Publication date: 5 January 2021

Esin Hasgül, İnci Olgun and Erhan Karakoç

The purpose of this paper is to emphasize passive energy refurbishment of vernacular building heritages and propose new application principles of sustainability from these…

Abstract

Purpose

The purpose of this paper is to emphasize passive energy refurbishment of vernacular building heritages and propose new application principles of sustainability from these vernacular heritages into contemporary architecture.

Design/methodology/approach

This paper is based on a research project (The Creation of a Prototype Project within the Application of Traditional Methods in Kastamonu, Küre Rural Settlements, 2017), through which vernacular architecture examples were analyzed, projecting for future interpretations for rural environments. Defining vernacular rural design principles is centrally important for the purposes of this project. As a case study from the Black Sea Region in Turkey, this example is investigated, and the outcomes of the analysis are used to reproduce in contemporary architectural terms the energy efficiency and rural patterns of the flexible rural house experience.

Findings

The research provides design principles for developing a new living experience in rural environments. The overall planning and architectural analysis are made in five neighborhoods in Küre, and three of unique vernacular architecture examples are chosen according to several criteria defined in “Kastamonu-Küre Ersizlerdere Village Design Guideline Project, 2014” to get the optimum data. Materials, orientation, form, spatial organization and building's indoor-outdoor relationship were analyzed by Autodesk's “Ecotect Analysis” simulation program.

Practical implications

Results of the proposed design principles of rural housing will be useful for new housing interpretations related to better rural development.

Originality/value

While defining energy efficiency criteria of vernacular itself, the results of this paper suggest new local solutions to ecological building design and engage with critical regionalism principles referring to the potentials of what traditional dwellings can teach contemporary design.

Details

Journal of Cultural Heritage Management and Sustainable Development, vol. 11 no. 4
Type: Research Article
ISSN: 2044-1266

Keywords

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