Abstract Cellulose is the most abundant and broadly distributed organic compound industrial by-product on Earth. However, despite decades of extensive research, bottom-up use cellulose to fabricate 3D objects still plagued with problems that restrict its practical applications: derivatives vast polluting effects, in combination plastics, lack scalability high production cost. Here we demonstrate general manufacture large objects. Our approach diverges from common association green plants it...

Bioinspired manufacturing, in the sense of replicating way nature fabricates, may hold great potential for supporting a socioeconomic transformation towards sustainable society. Use unmodified ubiquitous biological components suggests fundamentally manufacturing paradigm where materials are produced, transformed into products and degraded closed regional systems with limited requirements transport. However, adoption is currently by fact that despite their nature, these biopolymers...

Given plans to revisit the lunar surface by late 2020s and take a crewed mission Mars 2030s, critical technologies must mature. In missions of extended duration, in situ resource utilization is necessary both maximize scientific returns minimize costs. While this present significantly more complex challenge resource-starved environment Mars, it similar increasing need develop resource-efficient zero-waste ecosystems on Earth. Here, we make use recent advances field bioinspired chitinous...

Abstract A Symphony of Designiettes – Exploring the Boundaries Design Thinking in Engineering Education AbstractDesign engineering curricula typically entails solving open-ended problems by groups students overa significant academic time period. These design experiences may include interdisciplinary teams. Theymay clients and resources from industry. They a distinct focus on designmethodology supporting techniques.Over last two decades, movement exists to create more design-centric, or at...

Loss of geometric accuracy due to shrinkage is a challenge in material extrusion biological composites using water-based inks, such as the cellulose-chitin biopolymers used here. The shape 3D printed objects often departs from intended design geometry evaporative loss water during curing. Moreover, materials' viscoelastic characteristics result complex volumetric changes that are difficult predict and compensate for. We developed prediction-correction scheme by printing scanning cylindrical...

This paper summarizes the ongoing research on Bishopsgate Tower in City of London designed by Kohn Pedersen Fox Associates. We present a prerational geometry computational solution targeting constraint-aware exploration architectural design-space, while interactively optimizing building performance terms constructability and cost-efficiency. document novel approach metrics optimization supported parametric technologies embedded analytical algorithms. The process is indicative how methods...

Rationalisation of architectural design is paramount to manufacturing and its construction. This paper presents a methodology rationalisation building envelope geometry. We discuss methods for understanding addressing complexity; review two theoretical models rationalisation: the pre-rational post-rational principles; illustrate their benefits limitations demonstrate meeting point proposing an integrated performance-oriented model analysis envelopes, using digital techniques.

We present a system for 3D printing large-scale objects using natural biocomposite materials, which comprises precision extruder mounted on an industrial six-axis robot. This paper highlights work controlling process settings to print filaments of desired dimensions while constraining the operating point region maximum tensile strength and minimum shrinkage. Response surface models relating geometric physical properties extruded are obtained through face-centered central composite designed...

Taking an ear impression is a minimally invasive procedure. A review of existing literature suggests that contactless methods scanning the have not been developed. We proposed to establish correlation between external features with canal and this proof concept develop prototype algorithm for capturing predicting information.

We present a design-computation method of design-to-production automation and optimization in digital fabrication; an algorithmic process minimizing material use, reducing fabrication time improving production costs complex architectural form.Our system compacts structural elements variable dimensions within fixed-size sheets stock material, revisiting classical challenge known as the two-dimensional bin-packing problem.We demonstrate improvements performance using our heuristic metric,...

We present an additive manufacturing system for 3D printing large-scale objects using natural bio-composite materials. The process, affine to the Direct Ink Writing method, achieves build rate of 2.5cm3/s a precision dispensing unit mounted on industrial six-axis robot. During deposition composite is wet and exhibits thixotropy. As it loses moisture hardens shrinks anisotropically. This paper highlights work controlling process settings print filaments desired dimensions while constraining...

This paper presents a design computation system supporting scientific computing methods relevant to architectural and engineering under the paradigm of visual programming.The objective this research work is expand advance palette employed in academic professional environments.The tools contain for linear algebra, non-linear solvers, network analysis algorithms classical operational problems such as cutting packing, clustering routing.A few decades ago idea that would become so pervasive...

Three-dimensional (3D) printing is commonly associated with rapid prototyping. Here, we extend 3D as a tool to validate digital methodology of taking ear canal impressions for hearing aids. The central research question that this work addresses whether external scanners can be adapted scan human canals accurately and efficiently aid fitting. A comparison different contactless scanning technologies determined structured light the best suited technology into methodology. Furthermore, show...

Abstract We present a process that revisits form-finding within digital media, namely parametric design and robotic fabrication. It is inspired by classical architectural engineering experiments producing minimal surfaces tensile structures physical simulation of materials natural forces. Fabrication based on thermoforming, where thin sheets amorphous PET are heat-treated while in malleable state, the material behaves like stretchable membrane, an industrial robot imprints shape rapidly...

The goal of our system, for lack better name at moment named as Alpha, is to offer an integrated approach digital design and fabrication with capabilities beyond computer aided manufacturing. We attempt this identify new modes thinking address the broader picture, that is, challenge translating between its production. It understand complexity implications in production, enable perform architectural analysis, rationalization performance optimization. integrate visual: geometric modeling...

This paper presents a data centric perspective to historical building conservation using digital media.In particular we explore workflow based on large volumes acquired via 3D scanning technology, virtual restoration modelling and physical artefact reconstruction printing technology.We offer an alternative in contrast the prevalent approach of reverse engineering or geometric rationalization parametric design technology; highlight research opportunities as well challenges approach.