QUALITY CONTROL OF HOLES
IN DETAILS OF POLYMER COMPOSITE MATERIALS
I.P. Vnukov, I.N. Zyanchurina,
M.M. Serbov
The
article presents data on polymer composite materials use in aircraft building.
The analysis of nondestructive quality control methods for holes in parts made
from PCM was made. An optical control method is considered as the most suitable
for solving the problem of defect detection in through apertures. The principle
of G.B. Airy usage was proposed for diffraction pattern observation in circular
aperture. The principle is based on an analysis of the signal in the phase
space, where informative parameter is the amplitudes ratio of the odd or even
derivatives of the measured signal, for an arbitrary current independent
variable value.
Key words: polymer composite materials, reach-through
hole, an optical instrument, control, spectral ratio, the intensity of
radiation, diffraction, diffraction pattern.