METHOD OF THERMAL NON-DESTRUCTIVE INSPECTION OF MULTILAYER OBJECTS Russian patent published in 2005 - IPC

FIELD: non-destructive inspection.

SUBSTANCE: temperatures at inner and outer surfaces of tested area of multilayer objects are registered periodically during predetermined time interval. Value of heat conductance coefficient of the layer of interest is set multiple and density of heat flow is calculated which heat flow goes through selected surface of tested area. For any value of heat conductance coefficient the calculated density is compared with really achieved value of density to be determined through he same surface of interest. Then that value of heat conductance coefficient is selected which meets the condition of comparison. Heat flew density is determined by means of reference plate which is mounted onto selected area of tested part. Temperatures at surfaces of reference plate are registered and density of heat flow is determined which goes through surface of reference plate and density of flow through surface of reference plate is determined which surface is adjacent to selected surface of tested part.

EFFECT: improved truth of data.

2 cl, 1 dwg