Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 45 for “"material efficiency"”.
-
Material efficiency in construction
… to reach the recommended limit. Process efficiency improvements cannot deliver this magnitude of reduction; however if steel is used more efficiently so that less new material is required to deliver the same service - a concept termed 'material efficiency' - then this could allow demand …
-
Industry and Policy Implementation of Material Efficiency
… of a global effort to address climate change. Material efficiency, reducing the material inputs per service output, has long been identified as a globally underexplored mitigation strategy. Previous studies show unrealised technical potential to improve the efficiency of steel use, a large …
-
Material efficiency in architectural glass and façade design: Steps toward reuse
… achieved through the use of a broader range of material resources, advanced processing methods, and more complex construction techniques which paradoxically may reduce the ability to recover material resources at the end of their design life. To date, very little attention has been paid to the …
-
Making More Cars with Less Metal
… losses in automotive manufacturing would reduce material demand, providing environmental and financial benefits. This thesis explores material efficiency from four perspectives: 1. The opportunity for improvement: A part by part analysis of yield losses for every sheet metal component in a …
-
Site-level Resource Efficiency Analysis
… To this end, two viable strategies exist: energy efficiency and material efficiency. Despite their inherent interdependence, industry continues to treat these two strategies as isolated pursuits, providing in the process only a partial insight into the potential of resource efficiency. To resolve …
-
Structural analysis at scale: Computational modeling of embodied carbon in complex floor layouts
… is the subject of this work, is improving the material efficiency of flexural systems like floors. Floors are among the most materially wasteful structural components in buildings, and while decades of research have explored optimal floor system design, the complexity of proposed solutions has …
-
Dissolvable microneedle manufacturing methods and the application of three-dimensional printing to pharmaceuticals
… a process which can have drawbacks of low material efficiency and high regulatory requirements. The UCC-patented “ImmuPatch” process is a micromoulding method which significantly improves on the material efficiency of traditional micromoulding. In this study, a specific method based upon …
-
Strategies for reducing energy demand in the materials sector
This research answers a key question - can the materials sector reduce its energy demand by 50% by 2050? Five primary materials of steel, cement, aluminum, paper, and plastic, contribute to 50% or more of the final energy use and CO₂ emissions by industry, and thus are of primary focus. Both …
-
Thermoelectrics : material advancements and market applications
… success soon slowed down as efficiencies of the materials were not conducive to profitability. The effectiveness of a thermoelectric was described by a dimensionless figure of merit given by ZT=(S2a/ke+kp)T, where S is the Seebeck coefficient, T is the operational temperature, a is the electrical …
-
Barriers to the use of computational tools for embodied carbon reduction in structural engineering practice
… the impacts of climate change, and building materials, which in 2019 accounted for 10% of global carbon emissions, have an important role to play in this reduction. As key stakeholders in the building design process, structural engineers must implement strategies to reduce embodied carbon. …
-
Motion control of long span horizontal structures
… lengths of column-free span and demands for material efficiency have led to an overall reduction in the structural properties of mass, stiffness and damping. These three properties traditionally controlled motion-related serviceability issues, but this is no longer the case. Engineers are …
-
The potential contribution of industrial symbiosis to greenhouse gas emissions mitigation
Decarbonising energy-intensive material production processes as quickly and effectively as possible is a key challenge for policy-making to mitigate climate change. The global production of bulk materials such as steel, cement, paper, and aluminium has almost tripled over the past three decades. …
-
A study of the dynamics of shells with boundary layers and a study of the MITC3 shell element
… frequently used for their aesthetic appeal, and material efficiency. They can be found everywhere, in all sorts of contexts. For example, they can serve as roofs to encapsulate large areas (think Millennium Park in Chicago); as fuselage for an airplane; as the frame of a car; as chemical …
-
Optimization and analysis of doubly-curved Kirigami space frames
… internal element forces with better material efficiency and architectural flexibility. Doubly-curved Spin-Valence surfaces are developed to allow greater versatility of form and frame characteristics.
-
Interactive Topology Optimization with Hybrid Truss and Continuum Elements Types
… tool in structural design that can improve material efficiency and promote sustainability. However, currently topology optimization is not greatly used in the industry due to the nature of its user-unfriendly, high computation cost and difficulty in manufacturability. This thesis proposes a …
-
Optimization of composite floors : theory and practice
… current industry performance in regards to material efficiency in steel structures. This comparison is made to demonstrate how optimization can be used to reduce material usage in buildings, thereby driving down the embodied carbon of structures and potentially reducing costs. It is shown …
-
System-level design of low-carbon structures
… impact, implementability, and compatibility. Material efficiency and material choice represent two key levers for reducing emissions in structural design, but it is difficult to navigate trade-offs between these strategies at a system level of structural design. Holistic design strategies can …
-
Volumetric topology optimization under redundancy constraints
… and hence effectively combine safety with material efficiency. Overall, this thesis constitutes the early stage of a novel structural optimization algorithm that is unique to its volumetric optimization objectives.
-
Minimising embodied carbon in buildings: Uncertainty during early-stage design
Concrete is the world’s most used construction material. There are significant challenges with the decarbonisation of concrete, particularly cement, due to the release of carbon dioxide emissions during clinker production. Therefore, strategies to reduce embodied carbon in concrete buildings should …
-
Shear wall layout optimization for conceptual design of tall buildings
… optimal lateral system design is important for material efficiency. In a shear-wall-based building, the conventional design process starts with an architect generating a floor plan, which is then passed to a structural engineer, who, based on knowledge and prior experience, tries to place shear …
Page 1 of 3