a method and device enable the linear separation of two elements attached to each other through two connecting plates of the first element and the second element respectively . an arrangement connecting and separating the two connecting plates are mixed and comprise a layer . the connecting arrangement comprises soldering , glue , or resin , whereas the separating arrangement comprises thermite . these elements can also be layered rather than mixed . an electrical triggering of this assembly causes its quick and local warming - up and thus enables both of these elements to be separated .