國立虎尾科技大學 |

Control of Thermal History in Direct Laser Deposition Using Finite Element Method.

紀錄類型:	書目-語言資料,手稿 : Monograph/item
正題名/作者:	Control of Thermal History in Direct Laser Deposition Using Finite Element Method./
作者:	Hochmann, Eric.
面頁冊數:	1 online resource (218 pages)
附註:	Source: Masters Abstracts International, Volume: 56-05.
Contained By:	Masters Abstracts International56-05(E).
標題:	Mechanical engineering. -
電子資源:	click for full text (PQDT)
ISBN:	9781369885477

Control of Thermal History in Direct Laser Deposition Using Finite Element Method.
Hochmann, Eric.

Control of Thermal History in Direct Laser Deposition Using Finite Element Method. - 1 online resource (218 pages)

Source: Masters Abstracts International, Volume: 56-05.

Thesis (M.S.)

Includes bibliographical references

Additive manufacturing has become a topic of interest within the past decade. Direct Laser deposition (DLD), also known as laser engineered net shaping (LENS), is an additive manufacturing method that is used for metals. In general, there are many advantages of additive manufacturing methods and DLD, in particular, over conventional manufacturing processes such as reduced cost and production time. An additional advantage is the ability to control the mechanical properties of a part by governing the thermal gradient near the heat-affected zone as the part is built. Overall, the goal is to minimize local thermal gradients and cyclic reheating in order to produce superior parts with minimized residual stresses. The thermal history can be controlled by varying the laser power, laser scanning velocity, scanning pattern, substrate geometry, and substrate pre-heating, all of which are variables that have been extensively studied. However, there has been no developments on how varying the convective film coefficient on the bottom surface of the substrate can affect the temperature filed inside and around the build. A transient thermal analysis using finite element method in ANSYS was conducted to determine the effects of varied convection as well as build geometry on the thermal history of the build. Element birth capabilities are also utilized to obtain accurate real time results.

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

Mode of access: World Wide Web

ISBN: 9781369885477Subjects--Topical Terms:

557493
Mechanical engineering.
Index Terms--Genre/Form:

554714
Electronic books.

Control of Thermal History in Direct Laser Deposition Using Finite Element Method.
LDR:02698ntm a2200349Ki 4500 001 908661
005 20180330125240.5
006 m o u
007 cr mn||||a|a||
008 190606s2017 xx obm 000 0 eng d
020 $a 9781369885477
035 $a (MiAaPQ)AAI10256915
035 $a (MiAaPQ)niu:12780
035 $a AAI10256915
040 $a MiAaPQ $b eng $c MiAaPQ
099 $a TUL $f hyy $c available through World Wide Web
100 1 $a Hochmann, Eric. $3 1178902
245 1 0 $a Control of Thermal History in Direct Laser Deposition Using Finite Element Method.
264 0 $c 2017
300 $a 1 online resource (218 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
338 $a online resource $b cr $2 rdacarrier
500 $a Source: Masters Abstracts International, Volume: 56-05.
500 $a Includes supplementary digital materials.
500 $a Adviser: Iman Salehinia.
502 $a Thesis (M.S.) $c Northern Illinois University $d 2017.
504 $a Includes bibliographical references
520 $a Additive manufacturing has become a topic of interest within the past decade. Direct Laser deposition (DLD), also known as laser engineered net shaping (LENS), is an additive manufacturing method that is used for metals. In general, there are many advantages of additive manufacturing methods and DLD, in particular, over conventional manufacturing processes such as reduced cost and production time. An additional advantage is the ability to control the mechanical properties of a part by governing the thermal gradient near the heat-affected zone as the part is built. Overall, the goal is to minimize local thermal gradients and cyclic reheating in order to produce superior parts with minimized residual stresses. The thermal history can be controlled by varying the laser power, laser scanning velocity, scanning pattern, substrate geometry, and substrate pre-heating, all of which are variables that have been extensively studied. However, there has been no developments on how varying the convective film coefficient on the bottom surface of the substrate can affect the temperature filed inside and around the build. A transient thermal analysis using finite element method in ANSYS was conducted to determine the effects of varied convection as well as build geometry on the thermal history of the build. Element birth capabilities are also utilized to obtain accurate real time results.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
650 4 $a Mechanical engineering. $3 557493
655 7 $a Electronic books. $2 local $3 554714
690 $a 0548
710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a Northern Illinois University. $b Mechanical Engineering. $3 1148577
773 0 $t Masters Abstracts International $g 56-05(E).
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10256915 $z click for full text (PQDT)