Index Catalog // ScholarsArchive@OSU

Effect of Laser Powder Bed Fusion Parameters and Hot Isostatic Pressing on the Microstructure and Mechanical Properties of C22 Alloy

Creator:: Yan, Dongqing
Abstract:: A nickel-based Hastelloy C22 powder with a nominal composition of Ni-21.30Cr-13.36Mo-1.92Co-2.94W-3.85Fe-0.23Mn-0.3V(wt%) and particle size distribution of D₁₀=23.8±0.3 μm, D₅₀=37.5±0.2μm, and D₉₀=59.3±1.1 μm was gas atomized to be used as a feedstock in Laser Powder Bed Fusion (LPBF). In this study, laser power and scanning speed were optimized to manufacture specimens...
Resource Type:: Masters Thesis
Full Text:: . [18] Q. ying WANG, Y. chen XI, X. yu LIU, S. LIU, S. lin BAI, Z. de LIU, Microstructure and

The effects of nanoparticle addition on the processing, structure and properties of SiC and AlN

Creator:: Onbattuvelli, Valmikanathan P.
Abstract:: Silicon carbide (SiC) and aluminum nitride (AlN) exhibit a combination of thermal and mechanical properties that are relevant to applications in electronics, aerospace, defense and automotive industries. However, the successful translation of these properties into final applications lies in the net-shaping of these ceramics into fully dense microstructures. Increasing the...
Resource Type:: Dissertation

Mining Temporal Patterns for Prediction: A Mixed-Integer Programming Approach

Creator:: Mansourifard, Farzaneh
Abstract:: In the past two decades, the advancement in data collection and storage have led to the accumulation of complex datasets. Consequently, various industries have sought data-driven solutions to predict and detect anomalies. Temporal patterns have emerged as potential features in prediction models that could improve the performance of the identification...
Resource Type:: Masters Thesis

Nanoparticle-assisted diffusion brazing of metal microchannel arrays : nanoparticle synthesis, deposition, and characterization

Creator:: Eluri, Ravindranadh T.
Abstract:: Microchannel process technology (MPT) offers several advantages to the field of nanomanufacturing: 1) improved process control over very short time intervals owing to shorter diffusional distances; and 2) reduced reactor size due to high surface area to volume ratios and enhanced heat and mass transfer. The objective of this thesis...
Resource Type:: Dissertation
Full Text:: , Qi WH, Wang MP. Size and shape dependent melting-thermodynamic properties of metallic nanoparticles

Hybrid flowshop scheduling with dual resources in a supply chain

Creator:: Mehravaran, Yasaman
Abstract:: This dissertation addresses a hybrid-flow shop scheduling problem with dual resource constraints in a supply chain. Most of the traditional scheduling problems deal with machine as the only resource. However, other resources such as labor is not only required for processing jobs but are often constrained. Considering the second resource...
Resource Type:: Dissertation

Applications of Bayesian Optimization and Classification Surrogate Modeling to User-Guided Design

Creator:: Jetton, Cole M.
Abstract:: In engineering problems not all constraints can be explicitly written as mathematical functions. There needs to be a way integrate designer knowledge into the design process and preferably use that to guide an optimization problem. In this thesis, these constraints are modelled using classification surrogate models and integrated with Bayesian...
Resource Type:: Masters Thesis

Generalized Preconditioning to Accelerate Simulations with Large Multiphase Chemical Kinetics Models

Creator:: Walker, Anthony S.
Abstract:: Combustion emissions produced from burning real transportation fuels have many environmental impacts. However, detailed chemistry across multiple phases, time scales, and thermodynamic conditions make predicting combustion emissions challenging. Detailed modeling of the gas phase alone is prohibitively expensive, due to the large size and stiffness of the kinetic models. The...
Resource Type:: Dissertation
Full Text:: subset of species from models, e.g., Wang et al. performed a theoretical study of cyclic ether oxidation

An experimental approach to analyze large notched composite panels loaded in out-of-plane shear

Creator:: Froemming, Tyler M.
Abstract:: Identifying material characteristics of composites is important in designing any structural system. The aerospace industry relies on these material properties not only to design a functional aircraft, but also a safe and reliable one. Since carbon fiber composites are relatively new materials, little is known about its characteristics under certain...
Resource Type:: Masters Thesis

Data-Driven Environmentally Sustainable Product Design: A Shift Toward Increased use of Sustainable Design Activities in the Early Design Phase

Creator:: Ferrero, Vincenzo J.
Abstract:: Modern product design drives the boundaries of innovation by encompassing complex Design-for-X objectives, and the inclusion of multidimensional stakeholders. This growing complexity in product design has left design teams unequipped, as classical design theory is bounded by designer experience, expertise, and cognition. One novel approach to tackling product complexity is...
Resource Type:: Dissertation

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

ScholarsArchive@OSU

Effect of Laser Powder Bed Fusion Parameters and Hot Isostatic Pressing on the Microstructure and Mechanical Properties of C22 Alloy

The effects of nanoparticle addition on the processing, structure and properties of SiC and AlN

Mining Temporal Patterns for Prediction: A Mixed-Integer Programming Approach

Nanoparticle-assisted diffusion brazing of metal microchannel arrays : nanoparticle synthesis, deposition, and characterization

Hybrid flowshop scheduling with dual resources in a supply chain

Applications of Bayesian Optimization and Classification Surrogate Modeling to User-Guided Design

Generalized Preconditioning to Accelerate Simulations with Large Multiphase Chemical Kinetics Models

An experimental approach to analyze large notched composite panels loaded in out-of-plane shear

Data-Driven Environmentally Sustainable Product Design: A Shift Toward Increased use of Sustainable Design Activities in the Early Design Phase

Topological Design Considering Uncertainty and Hyperelasticity

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