Index Catalog // ScholarsArchive@OSU

Multi-modal sensing data fusion for machining and additive manufacturing

Creator:: Fu, Xianzhe
Abstract:: With the increased demand for high-quality products, reliable and robust process monitoring has become a key capability for modern manufacturing systems. Through sensors installed in the machinery, the real-time information was measured to assess the state of the processes. The measured data can be used to infer the mechanical, material,...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Xianzhe Fu

Model based visualization of vibrations in mechanical systems

Creator:: Jitpraphai, Thanat
Abstract:: To visualize vibrations in mechanical systems, e.g., machine tools, their movements are measured by means of suitable sensors. The signals from these sensors are processed and displayed as animated pictures on a computer screen. Accelerometers have been chosen as the most suitable sensors for this purpose. Their main advantages include...
Resource Type:: Masters Thesis
Full Text:: students in my research group, Thomas Nickel, Brian Brisbine, Ben Chen and all of my friends in helping

A framework to model reliability and failures in complex systems during the early engineering design process

Creator:: O'Halloran, Bryan M.
Abstract:: An open area of research in complex systems is to move reliability and failure assessments earlier in the engineering design process. When compared to later design, early decisions are cost effective and have a large impact on the system. Standard methods are limited by the availability of data and often...
Resource Type:: Dissertation

Risk-based design for multidisciplinary complex systems

Creator:: Farhangmehr, Farzaneh
Abstract:: The ultimate goal of large-scale design organizations are mainly to reduce costs and improve reliability and performance of systems while assessing how much risk (cost, schedule, scope) they can take and still remain competitive. To achieve this goal they need to develop tools to reach the most preferred design product...
Resource Type:: Masters Thesis

Topological Design Considering Uncertainty and Hyperelasticity

Creator:: Pham, Trung
Abstract:: Topology optimization (TO) is a mathematical method to find the optimal size, shape and connectivity of a domain under specified conditions, and has had many applications in engineering design. However, challenges remain in realizing TO as an effective design tool for many design situations. Uncertainty is ubiquitous in nature and...
Resource Type:: Dissertation

Additive Manufacturing of Austenitic Oxide Dispersion Strengthened Alloy Using Powder Feedstock Gas-atomized with Elemental Yttrium via Laser Directed Energy Deposition

Creator:: Yang, Seongun
Abstract:: This study investigates the microstructure and mechanical properties of an austenitic Oxide Dispersion Strengthened (ODS) steel produced by the Laser Directed Energy Deposition (LDED) process using powder feedstock atomized with elemental yttrium. The Microstructure of the samples was characterized by electron microscopy, and mechanical properties were measured using a tensile...
Resource Type:: Masters Thesis
Full Text:: ., Tang, Z., Wang, Y., Mei, X., Saleheen, K. M., ... & Zhang, H. (2020). Review on adaptive control of

Analysis and simulation of dual-source heat pumps with three-fluid evaporators

Creator:: Lee, Jai-hyo
Abstract:: When the ambient temperature drops, air-source heat pumps deliver less heating per unit of power input and usually cannot provide for the heating load. Therefore, dual-source heat pumps can offer an attractive alternative. In the context of this work, a dual-source heat pump operates as an air-source unit under normal...
Resource Type:: Dissertation
Full Text:: for friction factors based on the specific flow situation. The Chen correlation [22] was employed to

Tracking of Melt Pool Motion Using Numerical Analysis of Laser Powder Bed Fusion

Creator:: Cox, Bryce
Abstract:: Laser Powder Bed Fusion (LPBF) is a process commonly used to create additively manufactured metal parts. The flexibility and complexity allowed by the LPBF process provides opportunity for significant advancement in multiple industries as parts can be customized in shape and function for specific needs. These benefits can be compounded...
Resource Type:: Dissertation
Full Text:: increased hatch spacing. Laser powder bed fusion of Ni-Ti alloys were also studied by Lv, Shen, and Fu

Non-Myopic Distributed Coordination and Planning for Robotic Teams

Creator:: Smith, Andrew
Abstract:: As robotic systems become increasingly prevalent in our lives (e.g., by harvesting food, assisting with disaster response and defense, and transporting persons and our goods around the world) there is a growing need to ensure that they can cooperate to achieve their intended goals. Robotic cooperation in the real-world is...
Resource Type:: Dissertation

Evaporator analysis for application to water-source and ice-maker heat pumps

Creator:: Aceves, Salvador M.
Abstract:: Water-source and ice-maker heat pumps share many characteristics. However, each presents different technical difficulties that have prevented them from being used more widely. In a water-source heat pump a very important consideration is to reduce water consumption, while in an ice-maker heat pump a major concern is to reduce the...
Resource Type:: Dissertation
Full Text:: . Mei, 1983, determined experimentally the coefficients of performance (COP) of a commercially

ScholarsArchive@OSU

Multi-modal sensing data fusion for machining and additive manufacturing

Model based visualization of vibrations in mechanical systems

A framework to model reliability and failures in complex systems during the early engineering design process

Risk-based design for multidisciplinary complex systems

Topological Design Considering Uncertainty and Hyperelasticity

Additive Manufacturing of Austenitic Oxide Dispersion Strengthened Alloy Using Powder Feedstock Gas-atomized with Elemental Yttrium via Laser Directed Energy Deposition

Analysis and simulation of dual-source heat pumps with three-fluid evaporators

Tracking of Melt Pool Motion Using Numerical Analysis of Laser Powder Bed Fusion

Non-Myopic Distributed Coordination and Planning for Robotic Teams

Evaporator analysis for application to water-source and ice-maker heat pumps

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