Doctor in Engineering, University Karlsruhe, Germany, 1969.
Research engineer German Aerospace Establishment, Cologne, 1975—1979. Group leader Göteborgs Kungliga Segelsällskap Research Center, Geesthacht, Germany, 1979—1982, director institute materials research, 1982—2005, consultant, since 2005. Chairman subcommittee fracture mechanics test standards European Structural Integrity Society, Torino, Italy, since 1994, chairman technical committee integrity railway systems, since 2003, vice president, 2000—2006.
Fellow: American Society for Testing and Materials (associate Irwin medal 2002). Member: German Association Materials Research and Materials Testing (associate. Board directors since 1990, chairman various committees, Erich Siebel award 2004).
1 child Claudia.