1. Reliability of bolted assemblies: Layout design of bolted joints, Optimization for the tightening sequence, In service behavior of bolted joints; 2. Stress and strength analysis: Hydraulically expanded tube-to-tubesheet joints, Performance evaluation criteria for heat exchangers, Software development of stress analysis; 3. Leak predication and control: Creep-relaxation of joints, Leak testing of gasketed joints; |