Kenneth Hamberg became PhD 1986 with the thesis Microstructural Influence on the Fatigue Properties of Steel. The theses treated how a propagating fatigue crack interacted with the microstructure in steel. After disputation he was employed by AB Volvo, materials laboratory where he worked with cast material, mainly ductile and grey iron. Main activities here were quality of cast products and development of new alloys. 1999 he got a teaching position at Materials and Manufacturing Technology at Chalmers.