Testing Congresses 118 Materials 85 Standards 61 Metals 58 Soils 42 Ability 35 Physical fitness 27 Fatigue 23 Steel 23 Nuclear weapons 21 Soil mechanics 21 Rocks 20 Building materials 19 Strains and stresses 19 Welded joints 18 Design and construction 17 Educational tests and measurements 17 Mathematical ability 17 Roads 17 Coal 16 Concrete 16 Fracture mechanics 16 Mathematical models 16 Automobiles 15 Coke 15 Electric apparatus and appliances 15 Integrated circuits 14 Mathematics 14 Nondestructive testing 14