Index Catalog // ScholarsArchive@OSU

The effect of feedstock composition on defect evolution in powder injection molded ceramic microarrays using simulations and experiments

Creator:: Laddha, Sachin
Abstract:: Micro Powder injection molding (μPIM) is a cost-effective technique for producing small, complex, precision parts in high volumes from ceramic and metal nanoparticles. This study focuses on research conducted on fabrication of Micro Ceramic Arrays (MCAs) parts using μPIM. MCAs are widely used as the major components and design features...
Resource Type:: Masters Thesis
Full Text:: to thank, - Dr. Sundar Atre for his kind guidance throughout the project. - Dr. Shiwoo Lee for

Discovery, Processing and Characterization of New Copper and Hafnium-based Metallic Glass Alloys

Creator:: Saini, Jaskaran S.
Abstract:: Metallic glasses (MGs), also called amorphous metals, are metals or metallic alloys trapped in a disordered glassy state. Their amorphous nature and absence of features such as crystal lattices and defects (dislocations, grain boundaries etc.) endows them with a host of properties that far surpass those of common crystalline materials....
Resource Type:: Dissertation
Full Text:: like to acknowledge Isshu Lee for being such a great friend, helping me with job search, reviewing my

Selective laser melting of 304L stainless steel: Role of volumetric energy density on the microstructure, texture and mechanical properties

Creator:: Ghayoor, Milad, Lee, Kijoon, He, Yujuan, Chang, Chih-hung, Paul, Brian K., and Pasebani, Somayeh
Abstract:: The role of volumetric energy density on the microstructural evolution, texture and mechanical properties of 304L stainless steel parts additively manufactured via selective laser melting process is investigated. 304L is chosen because it is a potential candidate to be used as a matrix in a metal matrix composite with nanoparticles...
Resource Type:: Article

Additive Manufacturing of FeCrCoCuNi High Entropy Alloy via Laser Powder Bed Fusion and Nickel Aluminum Bronze via Laser Directed Energy Deposition

Creator:: Doyle, Ryan P.
Abstract:: High Entropy Alloys (HEA) exhibit unusual properties and are gaining interest as new materials for challenging applications in the aerospace, hypersonic and medical fields. The application of HEAs have been limited by the development of powder production at scale. A recently developed process of plasma spheroidization by 6K, inc. has...
Resource Type:: Masters Thesis
Full Text:: alloys.J. Alloys Compd.2019,811, 152000 [38] Jo, Y.H.; Doh, K.Y.; Kim, D.G.; Lee, K.; Kim, D.W.; Sung, H

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

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

Stability and biological responses of zinc oxide metalworking nanofluids (ZnO MWnF™)

Creator:: Niyaghi, Faraz
Abstract:: Zinc oxide nanoparticles (ZnO NPs) have demonstrated the ability to improve lubrication and thermal conductivity, and stand as promising metalworking lubricant and coolant additives due to their low cost compared to other NPs. While nanomaterials are a focus of research due to their potential to enable advanced technologies, little is...
Resource Type:: Masters Thesis
Full Text:: , resulted in reduction of COF to one half, but an increase in wear loss was also reported [45]. Shen

Planning Under Uncertainty for Unmanned Aerial Vehicles

Creator:: Skeele, Ryan
Abstract:: Unmanned aerial vehicle (UAV) technology has grown out of traditional research and military applications and has captivated the commercial and consumer markets, showing the ability to perform a spectrum of autonomous functions. This technology has the capability of saving lives in search and rescue, fighting wildfires in environmental monitoring, and...
Resource Type:: Masters Thesis

Characterization of Heterostructured Nanocrystalline Metals Processed by High-Pressure Torsion

Creator:: Han, Jae-Kyung
Abstract:: High-pressure torsion (HPT) is an effective severe plastic deformation (SPD) technique to produce bulk nanostructured materials (BNMs). These BNMs often show a combination of exceptional mechanical and physical properties. Processing of single metals and alloys by HPT has been understood that the homogenous microstructures can be achieved throughout the disk...
Resource Type:: Dissertation
Full Text:: nanoindentation experiments. Ms. Xiaojing Liu and Mr. Isshu Lee have helped in data analysis. Prof. Stanislav

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:: been achieved with alloying [9]. In recent years, Lee et al. [10,11] have done extensive research in

ScholarsArchive@OSU

The effect of feedstock composition on defect evolution in powder injection molded ceramic microarrays using simulations and experiments

Discovery, Processing and Characterization of New Copper and Hafnium-based Metallic Glass Alloys

Selective laser melting of 304L stainless steel: Role of volumetric energy density on the microstructure, texture and mechanical properties

Additive Manufacturing of FeCrCoCuNi High Entropy Alloy via Laser Powder Bed Fusion and Nickel Aluminum Bronze via Laser Directed Energy Deposition

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

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

Stability and biological responses of zinc oxide metalworking nanofluids (ZnO MWnF™)

Planning Under Uncertainty for Unmanned Aerial Vehicles

Characterization of Heterostructured Nanocrystalline Metals Processed by High-Pressure Torsion

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

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