New trends in non-destructive assessment of aerospace structures

摘要: The scope of the paper includes non–destructive assessment structure's material condition, for aerospace structures during its useful lifetime. presents multidisciplinary technologies devoted to development and implementation methods and systems that realize inspection damage detection by methods. The covers several disciplines which are based on topics such as piezoelectric transducers, elastic waves propagation phenomenon, structural vibrations analysis, electro–mechanical impedance method, terahertz technique, laser induced fluorescence 3D laser vibrometry applications. Among various techniques available selected numerical simulations experimental validations of considered structures. Authors address also problem adhesive bonding in case carbon fiber reinforced polymers (CFRP). Techniques weak bonds presented together with signal processing approaches. The reported investigations concern caused both manufacturing (e.g. release agent, poor curing) and in–service contaminations moisture). Also provides helpful information about dispersion, mode conversion wave scattering from stiffeners boundaries. It addresses optimisation excitation signal parameters sensor placement, well analysis signals reflected damage. a variety of techniques being related diagnostics (damage size estimation type recognition) prognostics.