Design and development of a metallic sandwich plate with truss type 3-dimensional inner structures3차원 트러스형 구조를 내부에 가지는 금속 샌드위치 판재의 설계 및 제작공정 개발에 관한 연구

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Diversified efforts are currently being concentrated for maximizing the efficiency of fossil energy, particularly on research for raising energy efficiency through weight reduction. A sandwich plate is a representative method of weight reduction presently used in various fields such as automobiles, aircrafts, sports equipment, and machine tools. In this study, the overall process related to the development and design of a sandwich plate with a truss core is studied. The objective of this thesis is to develop the design of-and an efficient production method for producing-a metal sandwich plate with a truss core that offers reduced weight while retaining sufficient impact resistance. To develop a cost-effective fabrication method, the concept of the continuous fabrication of a metallic sandwich plate with a three-dimensional truss core is introduced. The method consists of three processes: metallic mesh manufacture, truss core making, and bonding. A process to fabricate rhombic-shaped metal meshes without material loss is introduced. In order to construct the truss core, a crimping process is employed. Bonding is carried out using multi-point resistance welding with a pair of roll electrodes. To realize the proposed process, a prototype apparatus was assembled. Sandwich plates with a pyramidal truss core are fabricated on an integrated system for continuous fabrication and various experimental verifications are performed in order to investigate the practical applicability of the proposed process. For the design of the sandwich plate with a truss core, a design method that not only reduces the weight but also ensures impact resistance is suggested. The physical properties determining the characteristics of sandwich plates with truss cores as well as corresponding equations are described. Five major failure modes are described and dimensionless formulation for four failure modes is accomplished. Minimum weight design requires four equations for general sandwich pla...
Advisors
Yang, Dong-Yolresearcher양동열researcher
Description
한국과학기술원 : 기계공학전공,
Publisher
한국과학기술원
Issue Date
2009
Identifier
308969/325007  / 020035279
Language
eng
Description

학위논문(박사) - 한국과학기술원 : 기계공학전공, 2009.2, [ ix, 105 p. ]

Keywords

metallic sandwich plate; manufacturing; design; low velocity impact; sandwich tube; 금속샌드위치 판재; 생산; 설계; 저속충격; 샌드위치 튜브; metallic sandwich plate; manufacturing; design; low velocity impact; sandwich tube; 금속샌드위치 판재; 생산; 설계; 저속충격; 샌드위치 튜브

URI
http://hdl.handle.net/10203/42611
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=308969&flag=dissertation
Appears in Collection
ME-Theses_Ph.D.(박사논문)
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