GEAR TO TEST PIPE BILLET AT VARIOUS TEMPERATURES Russian patent published in 2002 - IPC

FIELD: study of strength of articles from hard materials by application of mechanical force to them. SUBSTANCE: gear to test pipe billet includes split matrix made of non-conductive material, pressure punch, working medium in the form of non-conductive loose material, transformer to heat up pipe billet. Through grooves are made in body of matrix, one groove houses video camera, another groove houses rod of strain gauge. Gauge measuring value of deformation and video camera are connected to computer. EFFECT: improved reliability of gear testing and following process of deformation taking place in pipe billet during test. 1 dwg