Damage localisation in delaminated composite plates using a Gaussian process approach

Corrado, Nicolò and Gherlone, Marco and Surace, Cecilia and Hensman, James and Durrande, Nicolas (2015) Damage localisation in delaminated composite plates using a Gaussian process approach. Meccanica, 50 (10). pp. 2537-2546. ISSN 0025-6455

Full text not available from this repository.

Abstract

The presence of a delamination in a bi-dimensional structure causes a discontinuity in the smoothness of the mode shapes on the perimeter of the damaged area. On this basis, in this paper, a numerical method proposed by the authors for detecting discontinuities in the first derivative of a smooth piecewise function, based on a Gaussian process regression (GPR) approach, has been applied to the problem of delamination localisation in multilayered composite plates. Using the finite-element method, the mode shapes of a multilayered composite plate with a delamination are calculated and used as input data for the damage localisation procedure. The performance of the approach are analysed for different sizes and through-the-thickness positions of the damage. Furthermore the problem of ‘boundary disturbance’, the erroneous indication that a fault is present near the edge of the plate exhibited when applying the GPR approach to bi-dimensional structures, is addressed using an extrapolation procedure. The effect of noise is also investigated in order to demonstrate the effectiveness and the versatility of the method in localising delaminations.

Item Type:
Journal Article
Journal or Publication Title:
Meccanica
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100/3104
Subjects:
ID Code:
84432
Deposited By:
Deposited On:
27 Jan 2017 16:38
Refereed?:
Yes
Published?:
Published
Last Modified:
11 Feb 2020 08:53