3D printed surfaces in daylighting design of buildings
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C
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Vysoké učení technické v Brně. Fakulta stavební
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Abstract
Diplomová práce se zabývá optickým chováním povrchů z 3D-tištěného betonu a jejich potenciálním vlivem na návrh denního osvětlení budov. Cílem práce je identifikovat, jak geometrie povrchu ovlivňuje odraz světla, jas a osvětlenost ve vnitřním prostředí, se zvláštním důrazem na směrový odraz světla. Součástí práce je podrobná literární rešerše mapující vývoj 3D tisku ve stavebnictví s důrazem na jeho architektonické využití. Teoretický rámec se zaměřuje na fotometrické principy a vliv odrazivosti povrchů na denní světelné podmínky v interiéru. Experimentální měření byla provedena na vzorcích z 3D-tištěného betonu za použití reflektometru, jasové kamery (Canon EOS RP se softwarem LMK) a snímačů osvětlenosti za účelem vyhodnocení koeficientů odrazu a úrovní jasu za kontrolovaných podmínek denního osvětlení. Získané výsledky přispívají k lepšímu pochopení vztahu mezi morfologií povrchu a distribucí světla a poskytují podklad pro integraci 3D-tištěných materiálů do energeticky efektivního architektonického návrhu.
This thesis examines the optical behavior of 3D-printed concrete surfaces and their potential influence on daylighting design in buildings. The study aims to identify how surface geometry affects light reflection, luminance, and illuminance within interior environments, specifically to understand the directional reflection of light. A comprehensive literature review explores the evolution of 3D printing in construction, highlighting its architectural application. The theoretical framework focuses on photometric principles and the impact of surface reflectance on daylight performance. Experimental measurements were conducted on 3D-printed samples using a reflectometer, luminance camera (Canon EOS RP with LMK software), and illuminance sensors to evaluate reflection coefficients and brightness levels under controlled daylight conditions. The results contribute to understanding the relationship between surface morphology and light distribution, guiding the integration of 3D-printed materials into energy-efficient architectural design.
This thesis examines the optical behavior of 3D-printed concrete surfaces and their potential influence on daylighting design in buildings. The study aims to identify how surface geometry affects light reflection, luminance, and illuminance within interior environments, specifically to understand the directional reflection of light. A comprehensive literature review explores the evolution of 3D printing in construction, highlighting its architectural application. The theoretical framework focuses on photometric principles and the impact of surface reflectance on daylight performance. Experimental measurements were conducted on 3D-printed samples using a reflectometer, luminance camera (Canon EOS RP with LMK software), and illuminance sensors to evaluate reflection coefficients and brightness levels under controlled daylight conditions. The results contribute to understanding the relationship between surface morphology and light distribution, guiding the integration of 3D-printed materials into energy-efficient architectural design.
Description
Citation
NORNG, S. 3D printed surfaces in daylighting design of buildings [online]. Brno: Vysoké učení technické v Brně. Fakulta stavební. 2026.
Document type
Document version
Date of access to the full text
Language of document
en
Study field
bez specializace
Comittee
doc. Ing. David Bečkovský, Ph.D. (místopředseda)
doc. Ing. František Vajkay, Ph.D. (člen)
Ing. Jan Müller, Ph.D. (člen)
Ing. Lubor Kalousek, Ph.D. (člen)
Ing. Petr Šimůnek, Ph.D. (člen)
Ing. Martin Mohapl, Ph.D. (člen)
doc. Ing. Roman Fojtík, Ph.D. (předseda)
Date of acceptance
2026-02-03
Defence
The student presented his work 3D PRINTED SURFACES IN DAYLIGHTING DESIGN OF BUILDINGS, using a PowerPoint presentation. During the defence of the thesis, he stated:
- Overview,
- Backgrounf
- Objective
- Theoretical Framework,
- Photometric quantities
- The relationship between Illuminance (E) and Luminance (L):
- Methodology,
- Calculation procedure
- Measurement instruments and software
- Calibration instruments, 3D concrete printing samples
- Discussion
- LMK LABSOFT IMAGE - FLAT SURFACE,
- LMK LABSOFT IMAGE - FLAT VS. BASIC REAL
- LMK LABSOFT IMAGE - BASIC REAL VS. IDEAL
- LMK LABSOFT IMAGE -FLAT VS. TANGLED REAL
- LMK LABSOFT IMAGE -FLAT VS. TANGLED IDEALGE - FLAT VS. BASIC REAL
- LMK LABSOFT IMAGE -TANGLED REAL VS. IDEAL
- Result
- Conlcusion,
The student further clarified and answered the questions and comments of the supervisor and the opponent of the thesis:
Opponent questions:
1.Why is the study of the optical properties of 3D-printed concrete specifically important for daylighting design in buildings?
2.The thesis states that textured surfaces exhibit anisotropic behavior. What does this mean in the context of light reflection, and where should these surfaces be positioned within a room?
3.When the angle of illumination was changed for the TANGLED REAL and TANGLED IDEAL samples, the light reflection factor changed. Can you explain what caused this and how this factor would fluctuate throughout the course of a day?
4.Samples BASIC REAL and BASIC IDEAL in Figure 6.9 exhibit different behaviors. Could you describe how the luminance differed between these two samples?
5.What are the primary recommendations for future research to build upon the findings of this thesis?
The student, who demonstrated a very good overview of the subject, provided expert opinions on all of the opponent's comments and responded very well to all questions posed by the committee members regarding the defended thesis.
Result of defence
práce byla úspěšně obhájena