Damage detection in structural components, especially in mechanical engineering, is an 2 important element of engineering practice. There are many methods of damage detection, in which 3 changes in various parameters caused by the presence of damage are analysed. Recently, methods 4 based on the analysis of changes in dynamic parameters of structures, i.e. frequencies or mode shapes 5 of natural vibrations, as well as changes in propagating elastic waves, have been developed at the 6 highest rate. Diagnostic methods based on the elastic wave propagation phenomenon are becoming 7 more and more popular, therefore it is worth to focus on the improvement of the efficiency of these 8 methods. Hence, a question arises whether it is possible to shorten the required measurement time 9 without affecting the sensitivity of the diagnostic method used. This paper discusses the results 10 of research carried out by the authors in this regard both numerically and experimentally. The 11 numerical analysis has been carried out by the use of the Time-domain Spectral Finite Element 12 Method (TD-SFEM), whereas the experimental part has been based on the measurement performed 13 by 1-D Laser Doppler Scanning Vibrometery (LDSV).
Authors
Additional information
- DOI
- Digital Object Identifier link open in new tab 10.3390/s21217394
- Category
- Publikacja w czasopiśmie
- Type
- artykuły w czasopismach
- Language
- angielski
- Publication year
- 2021
