A TECHNIQUE FOR MONITORING THE INTEGRITY OF THE COATING AND DEVICE FOR ITS IMPLEMENTATION

The developed methodology for monitoring the integrity of the protective coating is designed to control dielectric and high-resistance coatings. The control technique consists in measuring the resistance of the signal conductor located between the base of the part that is dielectric insulated from each other and the protective coating. By changing the resistance of the signal conductor, the integrity of the protective coating is judged. A friction machine that implements this technique allows testing the wear resistance of a coating according to GOST 30480–97 with simultaneous monitoring of coating integrity. The results of a joint test of a friction machine and methods during testing for wear of different coatinges are also demonstrated.

THE FREQUENCY CHARACTERISTICS OF COUPLED MICROSTRIP LINES / SUSIETŲJŲ MIKROJUOSTELINIŲ LINIJŲ DAŽNINĖS CHARAKTERISTIKOS

The article deals with the use of the finite difference time domain method and uniaxial perfectly matching layer for analysis of frequency characteristics of coupled microstrip transmission lines. It describes calculation techniques for voltage, current, characteristic impedance and effective dielectric constant of each signal conductor. Besides, it analyses the frequency dependencies of characteristic impedance and the effective dielectric constant. Article in Lithuanian. Santrauka Straipsnyje aptariamas baigtinių skirtumų laiko srities metodo taikymas ir absorbuojančio sluoksnio taikymas susietųjų mikrojuostelinių linijų analizei. Sudaryti ir išnagrinėti baigtinių skirtumų laiko srities metodu grįsti susietųjų mikrojuostelinių linijų matematiniai modeliai. Pateikiamos kiekvieno iš laidininkų įtampos, srovės, charakteringojo impedanso ir efektyviosios dielektrinės skvarbos skaičiavimo metodikos. Aptariami skaičiavimo metodikų pranašumai, trūkumai, pateikiamos jų tobulinimo kryptys.