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These Sandwiches
Are Not Edible NEW YORK, Dec. 15, 1997 -- A building element made of lightweight honeycomb sandwiched between curved composite panels is getting the attention of companies that make everything from storage containers to components for the future space station. The marine and avionics industries especially are interested in the new material which, if improved, could contribute significantly to faster boats and fuel-efficient airliners to meet consumer expectations and regulatory mandates. The advanced material is referred to as a sandwich structure and features an inner core of composite material designed like a honeycomb, wedged between two outer panels of aluminium or composite material. Hence the name, sandwich structure. The light weight of sandwich structures owes to the honeycomb-like design of the inner core. The panels, or facing sheets, accept most of the moisture, pressure loads and weight-bearing forces exerted from external conditions. Although the panels of the sandwich structure take most of the pressure, researchers believe it is critical that the core material be able to withstand some external forces. Engineering approaches to improved designs include reinforcing the core material and creating more separation between the core and outer panels. Sandwich structures have been used in Europe since the late 1980s, principally in navy ships. In the United States, manufacturers of passenger airliners and military aircraft systems have been the primary users. This scenario will change, as many industrial firms challenged to build lightweight, albeit rigid systems, take a closer look at the capabilities and benefits of sandwich structures. Every day, engineers in research laboratories and design and manufacturing centers are working on new and advanced materials to improve the strength and efficiency of structures. National Engineers Week celebrates their efforts and achievements. ### [_private/boilerplate.html]
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National Engineers Week Foundation
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