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エンジニアが建築構造用の頑丈なガラスレンガを3Dプリントする(Engineers 3D print sturdy glass bricks for building structures)

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2024-09-20 マサチューセッツ工科大学(MIT)

MITのエンジニアチームは、3Dプリント技術を用いて強固なガラス製のレンガを開発しました。これらのレンガはLEGOのように組み立てと分解が容易で、建物の寿命が終わった後も再利用可能です。機械的テストでコンクリートブロックと同等の圧力に耐えることが確認され、ガラス製マソナリーが持続可能な循環型建材としての可能性を示しています。研究は持続可能な建築材料の実現に向けた一歩となります。

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インターロッキングガラス石積みユニットの積層造形 Additive manufacturing of interlocking glass masonry units

Daniel Massimino,Ethan Townsend,Charlotte Folinus,Michael Stern & Kaitlyn Becker
Glass Structures and Engineering  Published:16 September 2024
DOI:https://doi.org/10.1007/s40940-024-00279-8

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Abstract

In comparison to traditional glass casting, glass additive manufacturing (AM) presents an opportunity to increase design flexibility and reduce tooling costs for the production of highly variable geometries. While the latter has been extensively explored for masonry units, there is minimal research on the former for its viability to produce structural building components. This paper encompasses design, manufacturing, and experimental testing to assess the feasibility of using glass AM to produce interlocking masonry units for the construction industry. The glass 3D printer employed in this study is capable of printing a maximum volume of 32.5 × 32.5 × 38 cm–suitable for producing full-size masonry units. As part of this work, we discuss how to adapt design guidelines for glass AM to produce interlocking units. To evaluate fabrication ease and structural performance, three fabrication methods, Fully Hollow, Print-Cast, and Fully Printed, are compared. To compare the accuracy, repeatability, and structural capacity of each masonry unit, geometric analysis, surface roughness, and mechanical testing is conducted. Results varied by fabrication method, with average strength ranging from 3.64−42.3 MPa for initial fracture and 64.0–118 MPa for ultimate strength. Accuracy in print dimensions was less than 1 mm with a standard deviation of 0.14–1.6 mm. Results demonstrated that Fully Hollow masonry units provide a more immediate path to implementation, while Fully Printed units have the potential to provide an entirely glass, transparent, and circular building component fabrication method.

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