технічний стан

REVIEW SOME OF NON-DESTRUCTIVE METHODS FOR PHYSICAL AND MECHANICAL CHARACTERISTICS TESTING OF THE MATERIAL OF ROCKET BARRELS AND ARTILLERY SYSTEMS

Barrels of missile and artillery systems during intensive operation are exposed to high temperatures, alternating loads, and corrosive aggressive environments. These effects lead to rapid degradation of the metal, changes in its structure, the appearance of intergranular corrosion, microcracks, and changes in the physical and mechanical properties of the material as a whole. The combined effect of the above factors leads to the inability of the structure to withstand operating parameters and its rapid destruction.

RESTORATION OF THE GATES OF THE MONASTERY COMPLEX OF SAINT GEORGE IN LVIV

The main gates were intended for the passage or passage of a large number of people in public, defensive or sacred complexes. They also had a symbolic meaning. In monastery and temple complexes, the main gate served as a boundary between secular and divine space with high spiritual values, a place of prayer and repentance. The article examines the main entrance gates of the St. George complex, which have survived to this day in an almost authentic form.The architectural, artistic and compositional solution of two gates - important structural elements of the St.