Strains and stresses Congresses 21 Testing 19 Structural analysis (Engineering) 17 Mathematical models 16 Materials 13 Strength of materials 13 Metals 12 Deformations (Mechanics) 10 Fatigue 9 Finite element method 7 Design and construction 6 Elasticity 6 Fracture mechanics 6 Reliability (Engineering) 6 Elastic solids 5 Measurement 5 Soil mechanics 5 Elastic plates and shells 4 Engineering design 4 Girders 4 Plasticity 4 Plates (Engineering) 4 System failures (Engineering) 4 Tunnels 4 Airplanes 3 Concrete 3 Rocks 3 Stability 3 Steel, Structural 3