國立虎尾科技大學 |

Investigation of the Potential of Cold Spray Technology as Additive Manufacturing Technique.

紀錄類型:	書目-語言資料,手稿 : Monograph/item
正題名/作者:	Investigation of the Potential of Cold Spray Technology as Additive Manufacturing Technique./
作者:	Qasaymeh, Jawad M.
面頁冊數:	1 online resource (154 pages)
附註:	Source: Dissertation Abstracts International, Volume: 78-12(E), Section: B.
標題:	Industrial engineering. -
電子資源:	click for full text (PQDT)
ISBN:	9780355083989

Investigation of the Potential of Cold Spray Technology as Additive Manufacturing Technique.
Qasaymeh, Jawad M.

Investigation of the Potential of Cold Spray Technology as Additive Manufacturing Technique. - 1 online resource (154 pages)

Source: Dissertation Abstracts International, Volume: 78-12(E), Section: B.

Thesis (Ph.D.)--State University of New York at Binghamton, 2017.

Includes bibliographical references

The purpose of this research initiative is to investigate the capability of the cold spray technology as an additive manufacturing technique. Cold spray is one of the thermal spraying technologies used primarily for metal coating. The coating layer is formed by accelerating a two-phase mixture of gas and metal particles into supersonic speeds before striking a solid surface. The high velocity of the impact causes severe deformation between the surfaces which lead to materials bonding and build up. Cold spray technology is extensively studied as a coating technique, but its application in building up full standalone products from scratch is still a new field to be studied. This research will focus on studying the characteristics of building multilayer coatings to build specific shapes and to present good information and useful relations as well as better understanding of the concept of using cold spray technology in the additive manufacturing field.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9780355083989Subjects--Topical Terms:

679492
Industrial engineering.
Index Terms--Genre/Form:

554714
Electronic books.

Investigation of the Potential of Cold Spray Technology as Additive Manufacturing Technique.
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245 1 0 $a Investigation of the Potential of Cold Spray Technology as Additive Manufacturing Technique.
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300 $a 1 online resource (154 pages)
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500 $a Source: Dissertation Abstracts International, Volume: 78-12(E), Section: B.
500 $a Adviser: Christoper M. Greene.
502 $a Thesis (Ph.D.)--State University of New York at Binghamton, 2017.
504 $a Includes bibliographical references
520 $a The purpose of this research initiative is to investigate the capability of the cold spray technology as an additive manufacturing technique. Cold spray is one of the thermal spraying technologies used primarily for metal coating. The coating layer is formed by accelerating a two-phase mixture of gas and metal particles into supersonic speeds before striking a solid surface. The high velocity of the impact causes severe deformation between the surfaces which lead to materials bonding and build up. Cold spray technology is extensively studied as a coating technique, but its application in building up full standalone products from scratch is still a new field to be studied. This research will focus on studying the characteristics of building multilayer coatings to build specific shapes and to present good information and useful relations as well as better understanding of the concept of using cold spray technology in the additive manufacturing field.
520 $a This research is performed in four phases; design, validation, prototyping and experimentation. A design of a testing rig that utilizes low-pressure cold gas dynamic spray principles is designed. This design aims to produce adequate particles velocity to achieve high-quality depositions, accommodate typical research lab equipment and facilities with a minimum cost in order to be a practical choice for the future researches. Computational fluid dynamics of the gas flow is used to optimize the nozzle design.
520 $a The validation of the design is performed by comparing the deposition status at different temperatures with simulation results. Simulation results show that the gas flow can achieve a maximum velocity of (938 m/s) at (850 K) and experimental results show that the particles can be deposited successfully. Design capability experiments are done to determine the feasible operating temperature and pressure that will result in a successful deposition of the material. The results show that the device is capable of depositing the material with a maximum deposition efficiency of (18%). The deposition efficiency increases as the temperature and pressure increase and the minimum required values for successful deposition are (0.3 Mpa) and (500 K). A set of experiments is designed to analyze the capability of cold spray technology for additive manufacturing applications. The results show that the temperature and pressure have no effect on deposit diameter and have a direct effect on the deposit length.
520 $a Three different spraying techniques are tested to determine their potential to improve the deposit shape. These techniques are reversal angle spraying technique, pre-shaped substrate technique, and shockwave control technique. The results show that the reversal spray and shockwave control methods produce deposits with shorter spray length and wider width. On the other hand, the pre-shaped substrate technique cannot create a solid surface of material. And finally, a novel design of the nozzle is proposed to provide a controllable expansion ratio of the nozzle. This feature makes it possible to work at the optimum deposition levels with any operational and materials conditions.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
650 4 $a Industrial engineering. $3 679492
655 7 $a Electronic books. $2 local $3 554714
690 $a 0546
710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a State University of New York at Binghamton. $b Systems Science Industrial Engineering. $3 1182293
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10282481 $z click for full text (PQDT)