Ultrasonic testing 16 Nondestructive examination 10 History of engineering and technology 8 Technology: general issues 7 Conservation of buildings and building materials 3 Guided electromagnetic wave propagation 3 Ultrasonic waves 3 AHP 2 Analytic hierarchy process 2 CT test 2 Carbon fibers 2 Coarse aggregates 2 Composite plates 2 Compressive strength 2 Computerized tomography 2 Concrete aggregates 2 Concrete buildings 2 Concrete construction 2 Corrosion damage 2 Corrosion evaluation 2 Cracks 2 Evaluation methods 2 Failure (mechanical) 2 Fatigue testing 2 Guided ultrasonic waves 2 Hierarchical systems 2 High-cycle fatigue 2 History of engineering & technology 2 Inspection 2 Low-velocity impact damage 2