SPECIMEN FOR ULTRASONIC FLAW DETECTION OF MULTI-LAYER STRUCTURES

摘要

The invention relates to an acoustic method of nondestructive testing. The aim of the invention is to obtain a predetermined increase in the accuracy disclosure defect in the manufacturing process of the sample by eliminating the possibility of deformation of the liner and the shell under the effect of temperature and pressure. The sample for inspection of multilayer structures obtained under the influence of temperature and pressure, is in the form of several layers 1 disposed therebetween simulants defects liner comprising the honeycomb plate 2 and the surrounding walls of the casing 3. The cell liner made of solid material, whose melting temperature exceeds the temperature structure production process, which eliminates any possibility of deformation. The shell 3 is made of material, thickness and modulus of elasticity which is chosen from the condition not exceeding the deflection of the shell 3 above the cell insert by pressure the structure production process, the maximum permissible value. The sample is used to adjust the flaw, such as ultrasonic inspection shadow, t ZP f- ly, i yl. / 3. VI B Yu vi GO 00