Thermal Nondestructive Testing of Buildings and Builded Constructions

A thermal nondestructive testing method ensuring the determination of characteristics of tested objects from an analysis of their temperature fields including the heat engineering characteristics of buildings and builded constructions with the use of the thermal imaging technique of recording the temperature fields is developed. The method is based on solving the inverse problem of time-dependent heat transfer in a multilayered three-dimensional domain. A method of simplification of solving the inverse problem, namely, the simplification of the total “plausibility functional” by separating the implicit dependence on a part of the parameters is proposed. A specific realization of the industrial testing of an object under full-scale environmental conditions is considered with reference to thermal nondestructive testing of envelope structures of an apartment house.