THERMAL FLAW DETECTOR Russian patent published in 2019 - IPC G01N25/72 G01J5/00 G01J5/60 

FIELD: machine building.

SUBSTANCE: invention relates to non-destructive testing of hidden defects in composite materials and articles using an active thermal method used in aerospace, rocket, nuclear, machine building and energy industries. Thermal flaw detector has an open housing accommodating a thermal imager and two optical heating sources, the reflectors of which are fitted with halogen lamps. Metal hollow shutters are attached to reflectors by means of movable hinges. Inner sides of shutters are made of metal with reflection coefficient of not less than 0.7. External sides of the shutters are made from metal with an absorption coefficient of not less than 0.9 and a roughness class not higher than the third one. Cavities of shutters are filled with heat-insulating incombustible material. Solenoids with their cores attached to movable hinges provide opening and closing of shutters.

EFFECT: technical result is increase of monitoring reliability due to reduction of level of thermal noise in controlled area.

1 cl, 1 dwg