FIELD: polymer composite materials.
SUBSTANCE: invention is intended to control the design of a pressure cylinder made of a polymer composite material (PCM) with a metal liner. The essence of the invention lies in the fact that the method for monitoring pressure cylinders made of PCM with a metal liner includes placing an optical fiber with a fiber Bragg grating (FBG) between the reinforcing layers of the PCM of the pressure cylinder susceptible to mechanical deformation during the manufacture of a cylinder, determining the initial spectral position of the FBG peaks, loading the cylinder with internal pressure and re-measurement of the spectral position of the FBG peaks, recording the magnitude of the deformation of the structure based on the results of measuring the spectral position of the FBG peaks. The registration of deformation δk=f(P) at the points of the composite shell (k) is carried out from the moment the cylinder is loaded with internal pressure at internal pressure values (P1, P2, …, Pn, …, Pmax), here k is the point number in the composite structure , in which the deformation is measured, n is the number of the loading pressure value at which the deformation is recorded, P is the value of the internal loading pressure, varying from P=0 to P=Pmax, where Pmax is the highest value of the loading pressure. The values of Pn and points k are recorded, where δk>0. The values εk of the liner delamination from the shell are determined depending on the characteristics of the liner and the internal pressure.
EFFECT: increasing the reliability of the results of assessing the technical and operational condition of PCM cylinder structures.
2 cl, 8 dwg
