METHOD FOR DETERMINING RESISTANCE OF POLYMER COVER TO FRACTURING DURING DEFORMATION OF MATERIAL UNDER EFFECT OF EXTERNAL LOADS Russian patent published in 2007 - IPC G01N3/40 G01N19/08 

FIELD: testing equipment.

SUBSTANCE: in accordance to method, value of maximal strains occurring in most dangerous points of real metal structure during its operation are calculated. Value of bending arrow is calculated, providing creation of strain value in middle section of plate with cover, equal to computed value of maximal strain in metal structure. Sample is made in form of metallic plate with polymer cover. Plate is loaded in accordance to three-point bending circuit by affecting its middle part till reaching computed value of bending arrow. Preservation of electric integrity of cover is stated, after that sample is placed in operation environment or environment, modeling operation environment. Exposure is sustained at given time base, dielectric integrity of cover is checked again and resistance of polymer cover to fracturing is evaluated.

EFFECT: increased precision of tests.

2 cl, 1 dwg