FIELD: measuring technology.
SUBSTANCE: inventions relate to the field of measuring technology and can be used to assess the reliability of complex spatial structures made of polymer composite materials. The method for automated ultrasonic thermo-optical non-destructive testing of products made of composite materials includes ultrasonic excitation of a temperature field in the region of a defect, registration of the temperature field, and detection of defective regions by comparing the magnitude of the temperature field with a threshold level. Before testing, fiber-optic temperature sensors are integrated into the composite material at a distance from each other not exceeding the distance of the heat front spreading in the material from the defect. Further, the source of ultrasonic excitation of the temperature field is continuously moved along the location of the fiber-optic sensors. The temperature value is sequentially recorded from fiber-optic sensors. The temperature values are compared with the threshold value and the defective area is detected when the temperature from the fiber-optic sensors of the set threshold level is exceeded. A device for implementing the method is presented.
EFFECT: providing control in hard-to-reach areas.
2 cl, 11 dwg
