Measuring device to determine the change in contour of a specimen for tensile test at various temperatures

摘要

the arrangement has a chamber enclosing the specimen in which the strain rods of a workpiece test machine protrude, a viewing window and a ventilator for distributing a temp. medium. A light source (8) with a scattering disc (9) is arranged on one side of the specimen (3) with a viewing tube (2) on the other side between the specimen and viewing window. A camera acquires specimen images through the window. A transparent light deflector (5) is arranged between the light source and specimen.