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http://dx.doi.org/10.3795/KSME-A.2010.34.1.55

Fatigue Fracture Assessment of Honeycomb Composite Side-Wall Panel Joint for the KTX Tilting Car Body  

Jeong, Dal-Woo (Department of Mechanical Engineering, Hanyang University)
Kim, Jung-Seok (Railroad Structure Research Department, Korea Railroad Research Institute)
Choi, Nak-Sam (Department of Mechanical Engineering, Hanyang University)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.34, no.1, 2010 , pp. 55-60 More about this Journal
Abstract
The honeycomb composite joint structure designed for application to a tilting KTX railroad car body is subjected to bending loads of a cantilever type. Honeycomb sandwich composite panel-joint attached in the real tilting car body was fabricated and sectioned as several beam-joint specimens for the bending test. The fracture behaviors of these specimens under static loads were different from those under cyclic loads. Static bending loads caused shear deformation and fracture in the honeycomb core region, while fatigue cyclic bend loading caused delamination along the interface between the composite skin and the honeycomb core, and/or caused a fracture in the welded part jointed with the steel under-frame. These fracture behaviors could occur in other industrial honeycomb composite joints with similar sub-structures, and be used for improving design parameters of a honeycomb composite joint structure.
Keywords
Honeycomb Composite Side-Wall Panel Joint; Tilting KTX Car Body; Fatigue Bending Test; Fatigue Strength;
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Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By SCOPUS : 0
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