A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Assessment of delamination in composite beams using shear horizontal (SH) wave mode
Interaction of Lamb waves with structural damage can lead to wave mode conversion. In this study, the shear horizontal (SH) wave, from the mode conversion of the fundamental symmetric Lamb wave (S0), was used for quantitative identification of delamination in composite beams, based on advanced signal processing using an inverse approach. SH wave propagation under various delamination conditions in CF/EP beams made of orthotropic plain woven fabrics was simulated, and signal characteristics were extracted in terms of the concept of digital damage fingerprints (DDF). With the aid of an artificial neural algorithm, the relation between the DDF of delamination-scattered SH mode and damage parameters was calibrated, whereby the occurrence, location and size of delamination in the composite beams were assessed. The approach was experimentally validated, and the results demonstrate the effectiveness of SH mode for quantitative damage evaluation of composite structures.
Assessment of delamination in composite beams using shear horizontal (SH) wave mode
Interaction of Lamb waves with structural damage can lead to wave mode conversion. In this study, the shear horizontal (SH) wave, from the mode conversion of the fundamental symmetric Lamb wave (S0), was used for quantitative identification of delamination in composite beams, based on advanced signal processing using an inverse approach. SH wave propagation under various delamination conditions in CF/EP beams made of orthotropic plain woven fabrics was simulated, and signal characteristics were extracted in terms of the concept of digital damage fingerprints (DDF). With the aid of an artificial neural algorithm, the relation between the DDF of delamination-scattered SH mode and damage parameters was calibrated, whereby the occurrence, location and size of delamination in the composite beams were assessed. The approach was experimentally validated, and the results demonstrate the effectiveness of SH mode for quantitative damage evaluation of composite structures.
Assessment of delamination in composite beams using shear horizontal (SH) wave mode
Bewertung der Delamination in Kunststoffträgern mittels horizontal Scherungs- (SH) Wellenmoden
Su, Zhongqing (author) / Yang, Chunhui (author) / Pan, Nan (author) / Ye, Lin (author) / Zhou, Li-Min (author)
Composites Science and Technology ; 67 ; 244-251
2007
8 Seiten, 5 Bilder, 3 Tabellen, 21 Quellen
Article (Journal)
English
Algorithmus , carbonfaserverstärkter Kunststoff , Delaminierung (Schichtablösung) , Epoxidharz , Finite-Elemente-Methode , gewebeverstärkter Kunststoff , horizontale Scherungswelle , Lamb-Welle , Laminat , mathematisches Modell , neuronales Netzwerk , piezoelektrischer Aktor , Schadensanalyse , Scherspannung , Träger (Bauwesen) , zerstörungsfreie Prüfung
Assessment of delamination in composite beams using shear horizontal (SH) wave mode
| British Library Online Contents | 2007
Horizontal shear resistance of composite beams
| Engineering Index Backfile | 1963
Mode I cohesive zone model for delamination in composite beams
| British Library Online Contents | 2013
Delamination of beams under transverse shear and bending
| British Library Online Contents | 1994
Horizontal Shear Strength of Indirectly Loaded Composite Concrete Beams
| Online Contents | 1999