Acoustic emission is interesting approach to investigation of composite materials. It enables detection of different modes of damage during loading of the material. By registering the elastic wave we are able to quantify it and describe the event by amplitude, frequency, rise time, duration, energy and others. This is useful to understand what is happening to the material, as well as the possibility of constant monitoring of composite constructions. The challenge is to actually understand the true meaning of registered signals. Therefore, various research teams all over the world are working on this subject. In the conference, we would like to present our analysis on carbon, glass and hybrid based composites. We tested 4 different configurations of composites and compared their behavior as well as acoustic emission events.