The design of large transportation systems such as buses, ships and railway cars is always determined by considerations of weight. The use of composite materials and sandwich structures in vehicle constructions are potential solutions to achieve high stiffness or strength/weight ratio and minimum weight. The use of laser welding for assembling stainless steel sandwich panels offers a wide range of attractive solutions for optimised design and flexible, high-quality manufacturing. This paper is based on an ongoing R&D project and presents some fabrication principles and test results of high stiffness, lightweight stainless steel sandwich panels intended to be used in transportation applications. The panels are laser welded, and consist of two-face stainless steel sheets, stainless steel square tubes and polyurethane foam. Panel size is 1000 x 1500 mm. The panels have been tested by static local indentation and 4-point bending tests, fatigue and corrosion tests. The results with reference to weight saving, structural integrity and corrosion behaviour are summarised and briefly discussed.
Laser beam welded stainless steel sandwich panels
Lasergeschweißte Sandwichpaneele aus nichtrostendem Stahl
1999
9 Seiten, 7 Bilder, 1 Tabelle
Conference paper
English
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