Detection and localization of defects in complex structures by Nonlinear Elastic Wave Spectroscopy and Acoustic Emission

0396731 - ÚT 2014 FR eng A - Abstrakt
Převorovský, Zdeněk - Chlada, Milan - Krofta, Josef - Kober, Jan - Dos Santos, S.
Detection and localization of defects in complex structures by Nonlinear Elastic Wave Spectroscopy and Acoustic Emission.
Nondestructive Characterization of Materials. Le Mans: The University of Maine in Le Mans, 2013 - (Bentahar, M.; Kenderian, S.; Green, R.). s. 95
[Internanational Symposium on Nondestructive Characterization of Materials /13./. 20.05.2013-24.05.2013, Le Mans]
Institucionální podpora: RVO:61388998
Klíčová slova: nonlinear elastic wave spectroscopy * acoustic emission * nondestructive testing * damage initiation * civil structure
Kód oboru RIV: JS - Řízení spolehlivosti a kvality, zkušebnictví

Application of two NDE methods - Acoustic Emission (AE) and Nonlinear Elastic Wave Spectroscopy (NEWS) along with loading and deformation history is discussed in the contribution. AE enables real-time detection and localization of damage initiation and growth during material stimulation, while NEWS methods provide retrieval of material changes without any loading. The common employment of both methods is effective as they can use the same transducers and devices. The utilization of common equipment can substantially reduce cost of SHM system, which incorporates also monitoring of mechanical and other physical quantities. A very good correspondence of defective zones revealed by both NDE methods, along with their complementarity is documented on fatigue damage monitoring of complex aircraft parts and on static loading damage of civil structure roof beams.
Trvalý link: http://hdl.handle.net/11104/0229590