000012705 001__ 12705
000012705 005__ 20160920162639.0
000012705 04107 $$aeng
000012705 046__ $$k2016-09-05
000012705 100__ $$aNardi, D.
000012705 24500 $$aDelamination detection in composite laminates using auto-regressive models of vibration signals

000012705 24630 $$n6.$$pInsights and Innovations in Structural Engineering, Mechanics and Computation
000012705 260__ $$bTaylor and Francis Group, London, UK
000012705 506__ $$arestricted
000012705 520__ $$2eng$$aIn this paper, the detection of delaminations in Carbon-Fiber-Reinforced-Plastic (CFRP) laminate plates induced by Low-Velocity Impacts (LVI) is investigated by means of Auto-Regressive (AR) models obtained from the time histories of the composite specimens. A couple of piezoelectric patches for actuation and sensing purposes are employed. The proposed Structural Health Monitoring (SHM) routine begins with the selection of the suitable locations of the piezoelectric transducers through the analysis of the numerical curvature mode shapes of the CFRP plates. Then the normalized data recorded of the pristine plate configuration are analyzed in order to obtain the most suitable AR model through five techniques based on Akaike Information Criterion (AIC), Akaike Final Prediction Error (FPE), Partial Autocorrelation Function (PAF), Root Mean Squared (RMS) of the AR residuals for different order p, and Singular Value Decomposition (SVD). Linear Discriminant Analysis (LDA) is then applied on the AR models parameters, i.e. the damage sensitive features extracted, to enhance the performance of the proposed delamination identification routine. Results show the effectiveness of the developed procedure when a reduced number of sensors is required.

000012705 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000012705 653__ $$a

000012705 7112_ $$aSixth International Conference on Structural Engineering, Mechanics and Computation$$cCape Town, South Africa$$d2016-09-05 / 2016-09-07$$gSEMC2016
000012705 720__ $$aNardi, D.$$iPasquali, M.$$iLampani, L.$$iGaudenzi, P.
000012705 8560_ $$ffischerc@itam.cas.cz
000012705 8564_ $$s2278818$$uhttp://invenio.itam.cas.cz/record/12705/files/153.pdf$$yOriginal version of the author's contribution as presented on CD, 153.pdf.
000012705 962__ $$r12552
000012705 980__ $$aPAPER