Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Jung Do Suh"'
Publikováno v:
International Journal of Precision Engineering and Manufacturing. 19:1681-1688
A random mixing FE modeling was proposed to implement mechanical behaviours of butt weld joint using only two kinds of material data, i.e. true stress-strain curves of base metal and deposited metal in the present study. Al6082-T6 and 7H01-T7 type ex
Publikováno v:
Journal of Power Sources. 196:9868-9875
A PEMFC (polymer electrolyte membrane fuel cell or proton exchange membrane fuel cell) stack is composed of GDLs (gas diffusion layers), MEAs (membrane electrode assemblies), and bipolar plates. One of the important functions of bipolar plates is to
Publikováno v:
Composite Structures. 92:1498-1503
A conventional PEMFC (polymer electrolyte membrane fuel cell) stack is composed of multiple stack composed of GDL (gas diffusion layer), MEA (membrane electrode assemblies), and bipolar plates sandwiched in between two thick metallic endplates tighte
Publikováno v:
Composite Structures. 92:1504-1511
To fasten a fuel cell stack in a polymer electrolyte membrane fuel cell (PEMFC), two thick steel endplates have been used to maintain a proper contact pressure at the interfaces among gaskets, gas diffusion layer (GDL), membrane electrode assemblies
Autor:
Dai Gil Lee, Jung Do Suh, In Uk Hwang, Byung Ki Ahn, Sung Ho Lee, Seong Su Kim, HaNa Yu, Tae Won Lim, Sae Hoon Kim
Publikováno v:
Journal of Power Sources. 184:90-94
Polymer electrolyte membrane fuel cells (PEMFCs) are able to efficiently generate high power densities, making the technology potentially attractive for certain mobile and portable applications. Since the bipolar plate is a major part of the PEMFC st
Autor:
Dai Gil Lee, Jung Do Suh
Publikováno v:
Composite Structures. 66:429-438
The thermal deformation affects the accuracy of a precision machine tool. There are various heat sources in machine tools such as motors, spindle units, and friction in LM-guide systems. In this work, the thermal characteristics of composite sandwich
Publikováno v:
Composites Science and Technology. 64:1523-1530
The high transfer speed as well as the high cutting speed of machine tools is important for the productivity improvement in the fabrication of molds/dies because non-machining time, called the air-cutting-time, amounts to 70% of total machining time
Publikováno v:
CIRP Annals. 51:285-288
To maximize the productivity in machining molds and dies, machine tools should operate at high speeds. However, the productivity of mold manufacturing has not increased significantly because CNC milling machines have massive slides, which do not allo
Publikováno v:
Journal of Materials Processing Technology. 113:178-183
In order to improve the vibration characteristics of a spindle cover made of 2 mm thick steel plate for high speed machine tools, the cover was reinforced with carbon fiber epoxy composite material. Considering the mounting conditions and the vibrati
Autor:
Dai Gil Lee, Jung Do Suh
Publikováno v:
Journal of Materials Processing Technology. 113:196-201
Screw rotors, the key parts of screw compressors, are widely used in compressing air and refrigerant due to their high productivity, compact size, low noise and easy maintenance. In general, a screw compressor unit is composed of female and male roto