Sandwich construction

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For the re­al­iza­tion of sand­wich con­struc­tions, ma­te­ri­als with dif­fer­ent prop­er­ties are bond­ed to­geth­er in lay­ers or sheets to pro­duce a com­po­nent or se­mi-fin­ished prod­uct. This is done, for ex­am­ple, ac­cord­ing to the prin­ci­ple of face lay­er-core lay­er-face lay­er. Sand­wich con­struc­tions are typ­i­cal of mod­ern light­weight con­struc­tion. Sol­id and force-ab­sorb­ing face sheets are com­bined with light­weight, of­ten soft­er core ma­te­ri­als. In this way, sand­wich con­struc­tions of­fer high me­chan­i­cal strengths and sta­t­ic load-bear­ing ca­pac­i­ties at a rel­a­tive­ly low weight. To­day, poly­eth­yl­ene, bal­sa wood, foams, met­al foams, min­er­al wool or hon­ey­comb mesh­es made of pa­per, card­board, met­al and plas­tic are used for the core ar­eas of sand­wich con­struc­tions. Sheet met­al, wood or fiber com­pos­ite ma­te­r­i­al is of­ten used for the face layers.

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