Lokalizacja makrorys w belkach żelbetowych na podstawie pomiaru prędkości fali

The paper presents bases of own method for an estimation and localization of cracked areas in bar reinforced concrete elements. The elements of graph theory are used to simplified time-effective modeling propagation of acoustic wave in a material medium. To find the minimum of error function for the measured and determined time-of-flights of ultrasonic waves one employed two methods: genetic algorithms and direct search method.