자료유형  

 학위논문

Control Number  

0017164312

International Standard Book Number  

9798342144582

Dewey Decimal Classification Number  

660

Main Entry-Personal Name  

Gabor, Theodore T.

Publication, Distribution, etc. (Imprint  

[S.l.] : Purdue University., 2024

Publication, Distribution, etc. (Imprint  

Ann Arbor : ProQuest Dissertations & Theses, 2024

Physical Description  

211 p.

General Note  

Source: Dissertations Abstracts International, Volume: 86-04, Section: A.

General Note  

Advisor: Jun, Martin Byung-Guk;Wu, Benxin;Chen, Jun;Lee, Chi Hwan.

Dissertation Note  

Thesis (Ph.D.)--Purdue University, 2024.

Summary, Etc.  

요약Powder Sprays such as Direct Energy Deposition and Cold Spray are rapidly growing and promising manufacturing methods in the Additive Manufacturing field, as they allow easy and localized delivery of powder to be fused to a substrate and consecutive layers. The relatively small size of nozzles allows for these methods to be mounted on CNC machines and Robotic Arms for the creation of complex shapes. However, these manufacturing methods are inherently stochastic, and therefore differences in powder size, shape, trajectory, and velocity can drastically affect whether they will deposit on a substrate. This variation results in an inherent reduction of deposition efficiency, leading to waste and the need for powder collection or recycling systems. The design of the nozzles can drastically affect the variation of powder trajectory and velocity on a holistic level, and thus understanding the gas-powder flow of these nozzles in respect to the features of said nozzles is crucial. This paper proposes and examines how changes in the nozzle geometry affect gas-powder flow and powder focusing for Direct Energy Deposition and Cold Spray. In addition, a new Pulsed Cold Spray nozzle design is proposed that will control the amount of gas and powder used by the nozzle via solenoid actuation. By making these changes to the nozzle, it is possible to improve deposition efficiency and reduce powder/gas waste in these processes, while also allowing for improved coating density. Furthermore, the research done in this thesis will also focus on novel applications to powder spray manufacturing methods, focusing on polymer metallization and part identification.

Subject Added Entry-Topical Term  

Cold.

Subject Added Entry-Topical Term  

Random access memory.

Subject Added Entry-Topical Term  

Metal forming.

Subject Added Entry-Topical Term  

Printed circuit boards.

Subject Added Entry-Topical Term  

Protective coatings.

Subject Added Entry-Topical Term  

Aluminum.

Subject Added Entry-Topical Term  

Energy.

Subject Added Entry-Topical Term  

Scanning electron microscopy.

Subject Added Entry-Topical Term  

Robotics.

Subject Added Entry-Topical Term  

Polymers.

Subject Added Entry-Topical Term  

Raw materials.

Subject Added Entry-Topical Term  

Viscosity.

Subject Added Entry-Topical Term  

Fourier transforms.

Subject Added Entry-Topical Term  

Power.

Subject Added Entry-Topical Term  

Computer aided design--CAD.

Subject Added Entry-Topical Term  

Spray painting.

Subject Added Entry-Topical Term  

Analytical chemistry.

Subject Added Entry-Topical Term  

Design.

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Electrical engineering.

Subject Added Entry-Topical Term  

Industrial engineering.

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Materials science.

Subject Added Entry-Topical Term  

Mathematics.

Subject Added Entry-Topical Term  

Polymer chemistry.

Added Entry-Corporate Name  

Purdue University.

Host Item Entry  

Dissertations Abstracts International. 86-04A.

Electronic Location and Access  

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Control Number  

joongbu:657642