서지주요정보
수치 모사를 통한 직접식 3차원 조형법의 금속 분말 적층부 소결에 관한 연구 = Numerical analysis for sintering of metal powder layers of the direct metal prototyping
서명 / 저자 수치 모사를 통한 직접식 3차원 조형법의 금속 분말 적층부 소결에 관한 연구 = Numerical analysis for sintering of metal powder layers of the direct metal prototyping / 손현기.
저자명 손현기 ; Sohn, Hyon-Kee
발행사항 [대전 : 한국과학기술원, 1996].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8006096

소장위치/청구기호

학술문화관(문화관) 보존서고

MME 96045

휴대폰 전송

도서상태

이용가능

대출가능

반납예정일

리뷰정보

초록정보

Rapid Prototyping(RP) is an efficient method for rapid design verification and trial manufacturing. The materials being used, however, have been limited mainly to non-functional materials such as photopolymer, plastics, paper, etc. The Direct Metal Prototyping(DMP) allows the manufacturing of three-dimensional metallic parts using metal powders directly from the CAD data. Laser power, scanning speed, and amount of offset are important variables of the process. The objective of this study is to obtain the design data for laser power and scanning speed to bond metal powders effectively using the finite element method. To obtain the design values, a numerical analysis considering two-dimensional heat transfer on the sintering of metal powder layers of the process was performed. The laser beam has been modeled to have directionality in its heat flux distribution, i.e.; in the scanning direction a Gaussian beam mode distribution has been assumed and in the thickness direction a square beam mode distribution. The three-dimensional irregular distribution of metal powders of the powder layer is idealized as two-dimensional distribution in which metal powders are located regularly and periodically on the plate. In this study the design values of laser power vs scanning speed have been obtained. Temperature distribution and temperature variation of the powder layers with respect to time have been predicted. The computed design data will be useful in determining the initial conditions of the process.

서지기타정보

서지기타정보
청구기호 {MME 96045
형태사항 vi, 71 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Hyon-Kee Sohn
지도교수의 한글표기 : 양동열
지도교수의 영문표기 : Dong-Yol Yang
학위논문 학위논문(석사) - 한국과학기술원 : 기계공학과,
서지주기 참고문헌 : p. 31-36
주제 쾌속 3차원 조형법
직접식 3차원 조형법
레이저 소결
유한요소법
Rapid prototyping(RP)
Direct metal prototyping(DMP)
Laser sintering
Finite element method
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