The article shows the possibility of using the IR - Fourier spectroscopy method to identify foreign particles found in the gas-air tract of gas-turbine engines of aircraft. The results of a comparative analysis of their (particles) IR- spectra, IR-spectra of various rubber technical parts, polymer products and materials used in their manufacture confirmed that the identified particles are fragments of carbonized rubber from aircraft tires as a result of exposure to high temperatures.
I. G. Kalinina (Wed,) studied this question.