|German partners laser weld 'sandwich' shipbuilding materials|
|Tuesday, 01 May 2012 00:00|
Laser Zentrum Hannover (LZH) and partners have pioneered the laser-welding of marine gear unit foundations constructed from steel and aluminum foam sandwich material, a demonstration that offers promising results for lightweight shipbuilding construction.
Metal foams are highly porous, lightweight materials which can absorb energy in the form of vibrations and knocks, or noise. They are also heat resistant and provide insulation against electromagnetic waves. Metal foams, embedded in so-called 'sandwich' constructions with aluminum or steel sheets, have a much higher bending stiffness than solid sheets, and due to their lower weight are especially suitable for lightweight construction or for highly stressed parts.
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