피라미드 트러스형 금속 샌드위치 판재의 적외선 브레이징을 이용한 효율적 적층식 제작 및 특성에 관한 연구Efficient Layered Manufacturing Method of Metallic Sandwich Panel with Pyramidal Truss Structures using Infrared Brazing and its Mechanical Characteristics

Cited 0 time in webofscience Cited 0 time in scopus
  • Hit : 337
  • Download : 0
Metallic sandwich panels with pyramidal truss structures are high-stiffness and high-strength materials with low weight. In particular, bulk structures have enough space for additional multifunctionalities. In this work, in order to fabricate 3-D structures efficiently, Layered Manufacturing Method (LMM) which was composed of three steps, including crimping process, stacking process and bonding process using rapid infrared brazing, was proposed. The joining time was drastically reduced by employing infrared brazing of which heating rate and cooling rate were faster than those of conventional furnace brazing. By controlling the initial cooling rate slowly, the bonding strength was improved up to the level of strength by conventional vacuum brazing. The observation of infrared brazed specimens by optical microscope and SEM showed no defect on the joining sections. The experiments of 1-layered pyramidal structures and 2-layered pyramidal structures subject to 3-point bending were conducted to determine structural advantages of multilayered structures. From the results, the multi-layered structure has superior mechanical properties to the single-layered structure.
Publisher
한국정밀공학회
Issue Date
2010-08
Language
Korean
Citation

한국정밀공학회지, v.27, no.8, pp.76 - 83

ISSN
1225-9071
URI
http://hdl.handle.net/10203/97212
Appears in Collection
ME-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0