The company DAKEL has been found in 1989 as a Diagnostics Department of ZD Rpety, by the group of research workers of various state research institutes, with the mission to design and develop the acoustic emission equipment. The group members were specialists in different technical and scientific fields: fracture mechanics, acoustic emission, non-destructive testing of materials and structures, theory of structural reliability, electronics, and software. From the beginning, the DAKEL group closely collaborates with many research institutes and universities, e.g. with Institute of Thermomechanics of the Czech Academy of Sciences in Prague, Faculty of Nuclear Sciences and Physical Engineering of the Czech Technical University in Prague, Faculty of Mathematics and Physics of the Charles University in Prague, Faculty of Mechanical Engineering of the Technical University in Brno (Czech Republic), and Welding Research Institute in Bratislava, VUJE Trnava, Inc. - Engineering, Design, and Research Company (Slovak Republic).