COMBINED TESTS FOR DETERMINATION OF MECHANICAL PROPERTIES OF KOVAR-COPPER BIMETAL

The article describes the production experience in developing a technological process for manufacturing the «Header» part made of 0.18 mm thick Kovar-Copper bimetal. Examples of defects arising during the manufacture of the part according to the technological process, which was analytically calculated using the derived analytical methods, are given. The need for computer modeling of the main manufacturing operations for production of «Header» part, as well as the need for determination of mechanical properties of the blank material is shown. A method of tensile testing of non-standard samples and variants of tooling that can be used for determination of different mechanical properties are given, as well as test faults that can occur due to small thickness of samples. A computer model for determination of mechanical properties of the bimetal that cannot be obtained by experiment is developed and adjusted; the prospects for using the model for determination of properties of multilayer materials consisting of two or more layers are described. The mechanical properties of the Kovar-Copper bimetal obtained from experimental and computer studies are given.