EXTENSOMETER FOR SITSTRUCTURAL INTEGRITY TEST OF NUCLEAR POWER PLANTS

摘要

The present invention relates to a displacement extensometer for measuring the linear displacement of the measurement object, which comprises: a first bracket installed at a reference point to provide a support force; a second bracket fixed to a measurement object; a displacement base body fixed to the first bracket and provided with a center rod connected to the second bracket, so that the center rod horizontally moves according to a position of the measurement object; a first link connecting the displacement base body and the first bracket; a second link connecting the center rod of the displacement base body to the second bracket; and a frictional force compensation member provided in the displacement base body to provide a physical stress to the center rod while offsetting a frictional force due to the drooping of the center rod.