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Improved car crash protection

from SPE Plastics Research Online

Sandwich composites are used in a wide range of applications, from aircraft, ships, ballistic vests and helmets to racing and high-end sports cars, providing a range of functions, including structural stiffness, crash-energy management, and heat shielding. These structures, composed of a core of cellular material and outer composite skins, are lightweight and yet offer high resistive stiffness against traction, compressive, and bending loads. These properties are used to produce functional structures that must sustain high stresses under normal conditions. During severe impact loads, the sandwich composites must dissipate impact energy to protect either the rest of the structure or the vehicle's occupants. more

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