| 摘要 |
FIELD: nondestructive control. ^ SUBSTANCE: samples in form of parallelepiped are subject to symmetrical heating and temperature-time changes are measured at fixed points of tested sample. Moment when regular temperature mode occurs in tested sample is determined and thermal conductivity is calculated on the base of received data. Temperature on the surface of parallelepiped is measured in two points - at the rib and in the middle of face. Moment when steady-state thermal mode occurs in tested sample is determined and temperature at the rib and in the middle of face of the parallelepiped is measured at two preset moments of time. After that the factor of thermal conductivity be determined has to be found. ^ EFFECT: improved precision of measurement. ^ 2 cl, 6 dwg |
