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-
- Description:
- In recent years, we have seen the embryo of Industry 4.0 which has been promoting manufacturing processes towards the future with better efficiency, higher accuracy and better reliability. However, manufacturing precision has been restricted by the precision of metrology and material characterization. In other words, one can only manufacture parts...
- Keyword:
- Digital Image Correlation, Metrology, Industry 4.0, Photometric Stereo, and Deep Learning
- Subject:
- Mechanical engineering
- Creator:
- Yang, Ru
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 08/23/2023
- Date Created:
- 2023-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:16719 and etdadmin_upload_1012433
-
- Description:
- The functions of lubricants in moving interfaces are extensive; lubricants minimize friction, transfer heat, clean the rubbing surfaces, extract debris, and diminish wear. Rather than using separate lubricants for each of the functions, it is more desirable to make one lubricant serve multiple purposes, or a muti-functional lubricant. The goals...
- Keyword:
- Atomistic modeling of lubricants, Pour point, Tribopolymerization, Thermal conductivity, Tribology, and Interfacial tribochemistry
- Subject:
- Mechanical engineering
- Creator:
- Ahmed, Jannat
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 08/23/2023
- Date Created:
- 2023-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:16670 and etdadmin_upload_1004183
-
- Description:
- Controlled delivery of foreign cargo into cells is a critical step in many biological studies and in cell engineering and analysis workflows. Recent advances in micro and nanotechnology, specifically in microfluidics and microfabrication have added significantly to the precision, accuracy, resolution and throughput of cell manipulation and analysis pipelines. These...
- Subject:
- Mechanical engineering
- Creator:
- Pathak, Nibir
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 08/23/2023
- Date Created:
- 2023-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:16641 and etdadmin_upload_997980
-
- Description:
- Topology optimization is a powerful tool for maximizing structural performance, enabling multifunctionality of the structure, and reducing the materials waste and cost for sustainable manufacturing. However, current topology optimization tools are limited to a few scales, and the potential of nested topology optimization in engineering design has yet to be...
- Subject:
- Mechanical engineering
- Creator:
- Li, Hengyang
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 08/23/2023
- Date Created:
- 2023-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_998611 and http://dissertations.umi.com/northwestern:16643
-
- Description:
- Bio-integrated electronics with advanced monitoring capabilities have garnered considerable interest as a means of expanding patient care beyond traditional hospital and clinic settings. These mechanically soft microsystems, many of which are bioresorbable and wireless, have the potential to replace bulky, rigid, and wired medical technologies by matching or exceeding their...
- Keyword:
- Mechanics, Skin-Integrated Electronics, Injectable Electronics, Bioresorbable Pacemakers, Engineering Modeling, and Electromagnetics
- Subject:
- Biomedical engineering, Mechanical engineering, and Electromagnetics
- Creator:
- Avila, Raudel
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 05/31/2023
- Date Created:
- 2023-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:16445 and etdadmin_upload_970258
-
- Description:
- As opposed to the nanoscale deposition techniques often used for material syntheses, here, I focus on mesoscale material depositions and how to design interfaces to efficiently manage such deposition and potential accumulation. These deposition processes include condensation, condensation frosting, particle capture, and vaporization. Through the lens of energy and sustainability,...
- Keyword:
- Heat Transfer, Phase Change, Interfacial Phenomena, Fluid Mechanics, and Mass Transfer
- Subject:
- Mechanical engineering
- Creator:
- Machado, Christian
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 05/31/2023
- Date Created:
- 2023-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:16579 and etdadmin_upload_986155
-
- Description:
- As the technology enabling touch-sense rendering of virtual textures grows in efficacy and prevalence, so too grows the need for a standardized means of storing, transferring, and reconstituting textural signals. Furthermore, to achieve the ultra-low-latency requirements of the next generation of global communications networks, this digital texture representation must be...
- Keyword:
- Haptics, Tactile Signal Compression, Touch, Ultrasonic Friction Reduction, and Virtual Texture
- Subject:
- Mechanical engineering
- Creator:
- Burns, David Arthur
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 05/31/2023
- Date Created:
- 2023-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:16413 and etdadmin_upload_962297
-
- Description:
- In recent decades, metal additive manufacturing has seen rapid advancements, offering promising applications across various industries. However, addressing existing challenges in metal AM, such as process stability, defect avoidance, and quality control, is essential for fully exploiting its potential in fabricating parts with a desired geometry, as well as tailored...
- Keyword:
- Physics-based Model, Digital Twin, Data-driven Model, Machine Learning, and Additive Manufacturing
- Subject:
- Mechanical engineering
- Creator:
- Liao, Shuheng
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 05/31/2023
- Date Created:
- 2023-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:16572 and etdadmin_upload_985942
-
- Description:
- As the technology enabling touch-sense rendering of virtual textures grows in efficacy and prevalence, so too grows the need for a standardized means of storing, transferring, and reconstituting textural signals. Furthermore, to achieve the ultra-low-latency requirements of the next generation of global communications networks, this digital texture representation must be...
- Keyword:
- Haptics, Tactile Signal Compression, Touch, Ultrasonic Friction Reduction, and Virtual Texture
- Subject:
- Mechanical engineering
- Creator:
- Burns, David Arthur
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 03/24/2023
- Date Created:
- 2023-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:16413 and etdadmin_upload_962297
-
- Description:
- The advent of metamaterials—hierarchical structures that manifest properties beyond those found in nature through geometry rather than material composition—inspired new possibilities and research in many fields. In mechanics, periodic metamaterials exhibit behaviors ranging from unprecedented compressibility to extreme stiffness. Numerous geometric classes of metamaterials with these properties have been discovered,...
- Keyword:
- Design representation, Deep learning, Design synthesis, Multiscale topology optimization, Data-driven design, and Data acquisition
- Subject:
- Design, Mechanical engineering, and Computer science
- Creator:
- Chan, Yu-Chin
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 09/22/2022
- Date Created:
- 2022-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:16251 and etdadmin_upload_928694
-
- Description:
- Flexible sheet metal forming processes possess significant potential in today’s industrial goods market with the advent of the next generation manufacturing paradigm, which put stresses on products customization and cost efficiency. However, due to the unique tooling configurations and forming mechanisms adopted in different flexible sheet metal forming processes, there...
- Subject:
- Mechanical engineering
- Creator:
- Leem, Dohyun
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 09/22/2022
- Date Created:
- 2022-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:16265 and etdadmin_upload_929293
-
- Description:
- Predicting pediatric spinal deformity (PSD) from X-ray images collected on the patient's initial visit is a challenging task. This research provides a bio-informed framework based on a mechanistic machine learning technique with dynamic patient-specific (PS) parameters to predict PSD. We provide a geometry-based bone growth model that can be utilized...
- Keyword:
- Adolescent idiopathic scoliosis (AIS), Mechanistic bio-informed machine learning, Pediatric spinal deformity (PSD), 3D reconstruction, X-ray images, and Mesh registration
- Subject:
- Mechanical engineering and Biomechanics
- Creator:
- Tajdari, Mahsa
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 06/22/2022
- Date Created:
- 2022-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_879756 and http://dissertations.umi.com/northwestern:15944
-
- Description:
- Additive manufacturing (AM), also known as three-dimensional (3D) printing, has received considerable interests in recent years. It enables fabrication of complex, customizable parts that would otherwise be too expensive or impossible for traditional manufacturing methods. 3D printing encompasses a wide variety of processes, including photopolymerization, material extrusion, selective laser sintering,...
- Keyword:
- Optical Imaging System, Continuous Liquid Interface Production, and Additive Manufacturing
- Subject:
- Mechanical engineering
- Creator:
- Hai, Rihan
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 06/22/2022
- Date Created:
- 2022-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:16043 and etdadmin_upload_900931
-
- Description:
- Mixing by cutting-and-shuffling (like that for a deck of cards or a Rubik's cube) is a paradigm that has not been studied in detail even though it can be applied in a variety of situations including the mixing of granular materials. Mathematically, cutting- and-shuffling is described by piecewise isometries (PWIs),...
- Keyword:
- granular materials, mixing, machine learning, piecewise isometries, cutting-and-shuffling, and interval exchange transforms
- Subject:
- Applied mathematics, Chemical engineering, and Mechanical engineering
- Creator:
- Lynn, Thomas Ferguson
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 06/22/2022
- Date Created:
- 2022-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_881325 and http://dissertations.umi.com/northwestern:15951
-
- Description:
- Biological experiments involving the manipulation and analysis of cells have always strived towards greater precision and resolution. Recent advances in micro and nanotechnology have improved the precision of manipulation and the resolution of analysis down to a single cell, thus opening new avenues of investigation. These advances have added a...
- Keyword:
- Intracellular Delivery, Microfluidics, and Localized Electroporation
- Subject:
- Bioengineering, Mechanical engineering, and Biophysics
- Creator:
- Mukherjee, Prithvijit
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 06/22/2022
- Date Created:
- 2022-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15955 and etdadmin_upload_882743
-
- Description:
- With the increasing demand for customized products, rapid prototyping, and small-batch production, incremental sheet forming (ISF) is gaining ever-growing attention. The potential of ISF to produce parts without the use of geometry-specific dies has revolutionized the sheet forming processes. Despite its promising characteristics, ISF thus far has not been extensively...
- Subject:
- Mechanical engineering
- Creator:
- Jiang, Zilin
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 06/22/2022
- Date Created:
- 2022-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_901916 and http://dissertations.umi.com/northwestern:16058
-
- Description:
- The successful isolation of graphene marked the advent of two-dimensional (2D) materials. Their atomically thin structures enable unprecedented electrical, optical, and mechanical properties, which have triggered significant research interests in the past decade. For instance, they are promising candidates for the fabrication of flexible electronics, biological sensors, battery electrodes, and...
- Keyword:
- Toughening, Transmission Electron Microscopy, Molecular Dynamics Simulations, In Situ Fracture Test, Polymer, and Two-dimensional Materials
- Subject:
- Materials Science, Mechanical engineering, and Engineering
- Creator:
- Zhang, Xu
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 06/22/2022
- Date Created:
- 2022-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15978 and etdadmin_upload_889878
-
- Description:
- Current technologies capable of establishing bioresorbable orthopedic fixation devices and stents have broad utility for biomedical applications to improve constructive tissue remodeling. Recent studies and investigations on bioresorbable conductors, semiconductors, dielectrics, and polymer substrates offer a promising opportunity to propel the existing non-degradable bioelectronic devices to the promising bioresorbable electronics,...
- Keyword:
- Soft materials, Bioresorbable electronics, Solid mechanics, Functional interfaces, Implantable electronics, and MEMS
- Subject:
- Mechanics, Bioengineering, and Mechanical engineering
- Creator:
- Yang, Quansan
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/02/2022
- Date Modified:
- 07/18/2022
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_824270 and http://dissertations.umi.com/northwestern:15603
-
- Description:
- Engineering design is a systematic process of identifying needs and their translation into functional systems. This is a cyclic process that alternates between the acquisition of data and the synthesis of said data to inform design decisions. Conventionally, data from physical experiments are used to explore the efficacy of alternative...
- Keyword:
- Uncertainty quantification, Design, Decision making, Machine learning, Data acquisition, and Data synthesis
- Subject:
- Design and Mechanical engineering
- Creator:
- van Beek, Anton
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/02/2022
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_861337 and http://dissertations.umi.com/northwestern:15848
-
- Description:
- A framework is developed that models point defect diffusion and interaction with pre-existing microstructures during irradiation, including defect-defect interactions and defect sinks. This framework uses a modified diffusion potential that includes not only defect concentration, but also intrinsic stresses from the pre-existing microstructure. Various microstructures are studied in {Fe} by...
- Keyword:
- Grain boundaries, Voids, Point defects, Radiation, Crack tip, and Triple junctions
- Subject:
- Materials Science, Mechanical engineering, and Nuclear engineering
- Creator:
- Zarnas, Patrick
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 10/07/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15639 and etdadmin_upload_831637
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