Index Catalog // Arch : Northwestern University Institutional Repository

Description:: In this dissertation, advances are made in understanding both the way hyporheic exchange impacts riverbed morphodynamics and the physical processes that lead to turbulent momentum transfer in the first few grains of riverbed sediments. In terms of physical advances in understanding the interplay between bedform movement and hyporheic exchange, we...
Keyword:: Hyporheic Exchange, LES, Flume Experiments, Turbulence, and Bedforms
Subject:: Environmental engineering, Mechanical engineering, and Civil engineering
Creator:: Dallmann, Jonathan
Owner:: Scholarly Digital Publishing
Language:: en
Date Uploaded:: 06/28/2021
Date Created:: 2021-01-01
Resource Type:: Dissertation
Alternate Identifier:: etdadmin_upload_819194 and http://dissertations.umi.com/northwestern:15572

Description:: The staggered (or imbricated) lamellar ``brick-and-mortar" nanostructure of nacre endows nacre with strength and fracture toughness values exceeding by an order of magnitude those of the constituents, and inspires the advent of new robust biomimetic materials. While many deterministic studies clarified these advantageous features in the mean sense, a closed-form...
Keyword:: Nacre, Strength, Probability, Octet-truss, Architected Material, and Size Effect
Subject:: Mechanics, Mechanical engineering, and Civil engineering
Creator:: Luo, Wen
Owner:: Scholarly Digital Publishing
Language:: en
Date Uploaded:: 01/21/2021
Date Created:: 2020-01-01
Resource Type:: Dissertation
Alternate Identifier:: http://dissertations.umi.com/northwestern:15081 and etdadmin_upload_741756

Description:: The dissertation systematically delineates the mechanically-guided deterministic assembly of three-dimensional (3D) mesostructures by compressive buckling, covering topics from mechanics concepts, design and analysis, fabrication techniques, to application opportunities. The development of approaches to form complex 3D functional mesostructures in advanced materials is a topic of broad interest, thanks to the...
Subject:: Materials Science, Mechanical engineering, and Civil engineering
Creator:: Luan, Haiwen
Owner:: Scholarly Digital Publishing
Language:: en
Date Uploaded:: 02/12/2020
Date Created:: 2019-01-01
Resource Type:: Dissertation
Alternate Identifier:: http://dissertations.umi.com/northwestern:14682 and etdadmin_upload_663249

Description:: Additive manufacturing (AM) processes have advanced rapidly over the last three decades to the point where they have the potential to fundamentally change the way complex parts will be designed and fabricated in the future. Additive methods leverage the ability to join metal particles or molten droplets in a layer-by-layer...
Keyword:: Hydrodynamic, Thermal, Laser Induced Forward Transfer, and Aperture
Subject:: Mechanics, Mechanical engineering, and Civil engineering
Creator:: Zhang, Li
Owner:: Scholarly Digital Publishing
Language:: en
Date Uploaded:: 02/12/2020
Date Created:: 2018-01-01
Resource Type:: Dissertation
Alternate Identifier:: etdadmin_upload_618185 and http://dissertations.umi.com/northwestern:14414

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