A crack in a structure causes a discontinuity in the first derivative of the mode shapes: On this basis, a numerical method for detecting discontinuities in smooth piecewise functions and their derivatives, based on a polynomialannihilation technique, has been applied to the problem of crack detection and localisation in beam-like structures for which only post-damage mode shapes are available. Using a finite-element model of a cracked beam, the performance of this methodology has been analysed for different crack depths and increasing amounts of noise. Given the crack position, a procedure to estimate its depth is also proposed and corresponding results shown.
On the Use of the Polynomial Annihilation Edge Detection for Locating Cracks in Beam-Like Structures / C. Surace; R. Archibald; R. Saxena. - In: COMPUTERS & STRUCTURES. - ISSN 0045-7949. - ELETTRONICO. - 114-115(2013), pp. 72-83. [10.1016/j.compstruc.2012.10.008]
Titolo: | On the Use of the Polynomial Annihilation Edge Detection for Locating Cracks in Beam-Like Structures | |
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Data di pubblicazione: | 2013 | |
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Digital Object Identifier (DOI): | http://dx.doi.org/10.1016/j.compstruc.2012.10.008 | |
Appare nelle tipologie: | 1.1 Articolo in rivista |
File in questo prodotto:
File | Descrizione | Tipologia | Licenza | |
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CAS_4903.pdf | bozza finale post-referaggio | 2. Post-print / Author's Accepted Manuscript | Non Pubblico - Accesso privato/ristretto | Administrator Richiedi una copia |
Surace.pdf | 2. Post-print / Author's Accepted Manuscript | Non Pubblico - Accesso privato/ristretto | Administrator Richiedi una copia |
http://hdl.handle.net/11583/2503527