Інститут Прикладних Проблем Механіки І Математики Ім. Я.С. Підстригача Національної Академії Наук України
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Publication of UA47331UpublicationCriticalpatent/UA47331U/en
Analysing Materials By The Use Of Radiation
(AREA)
Investigating Or Analyzing Materials Using Thermal Means
(AREA)
Abstract
Method for determination of hemisphere integral level of blackness of surfaces of bodies made of opaque materials includes heating and cooling sample in chamber with high vacuum, registration of change in time of temperature of surface of sample at its cooling and calculation of hemi-spherical integrated level of blackness on basis of relationships between heat balance at heat exchange by evaporation of sample with walls of chamber with given geometric form with known radiation characteristics. Walls of the chamber are made of partially transparent material due to which practically at energy of radiation of sample at its cooling belongs to spectral range of wall transparency and radiation goes to environment without effect on thermal state.
UAU200908432U2009-08-102009-08-10Method for determination of hemisphere integral level of blackness of surfaces of bodies made of opaque materials
UA47331U
(en)