METHOD OF DETERMINING PHYSICAL PROPERTIES OF HOMOGENEOUS ISOTROPIC ELASTIC MATERIALS Russian patent published in 1996 - IPC

FIELD: measurement technology. SUBSTANCE: temperature conductivity coefficient is determined at lateral clean bend of prism-shaped sample, as well as temperature difference of its compressed and extended sides. Then the sample is subject to thermostating and after temperatures of the sample and thermostat are equalized, the sample is subject to single-axis extension by permanent force preset in stepwise manner. Stepwise temperature change of the sample is measured, as well as values of lateral and longitudinal relative deformations. Then change in temperature of the sample is measured during some period of time, induced by external heat exchange process, at which transition is conducted from adiabatic thermal regime of deforming to isothermic one. When temperatures of the sample and thermostat are equalized, the longitudinal relative deformation of the sample is measured repeatedly, and specific heat capacity is calculated, as well as thermal expansion coefficient, convective heat transfer coefficient of sample/medium system, adiabatic and isothermic Young's modulus and Poisson coefficients, isobaric heat capacity is measured relatively isochoric heat capacity, using bending test results. Heat conductivity coefficient of the sample is determined additionally. EFFECT: improved precision of measurement.