Effect of fibre wrinkling to the spring-in behaviour of L-shaped composite materials (2014)
Journal Article

© 2014 Elsevier B.V. All rights reserved. To determine the amount of deformation resulting from fibre wrinkling at corner regions, a set of experiments have been conducted. As known in the conventional lay-up method, the prepregs are laid sequentiall... Read More about Effect of fibre wrinkling to the spring-in behaviour of L-shaped composite materials.

Interlaminar Fracture Toughness Evaluation in Glass/Epoxy Composites Using Acoustic Emission and Finite Element Methods (2014)
Journal Article

© 2014, ASM International. Delamination is one of the most common modes of failure in laminated composites and it leads to the loss of structural strength and stiffness. In this paper, mode I, mode II, and mixed of these pure modes were investigated... Read More about Interlaminar Fracture Toughness Evaluation in Glass/Epoxy Composites Using Acoustic Emission and Finite Element Methods.

H<inf>∞</inf> observer design for uncertain nonlinear discrete-time systems with time-delay: LMI optimization approach (2014)
Journal Article

Copyright © 2014 John Wiley & Sons, Ltd. We present a robust H∞ observer for a class of nonlinear discrete-time systems. The class under study includes an unknown time-varying delay limited by upper and lower bounds, as well as time-varying paramet... Read More about H<inf>∞</inf> observer design for uncertain nonlinear discrete-time systems with time-delay: LMI optimization approach.

Acoustic emission-based study to characterize the initiation of delamination in composite materials (2014)
Journal Article

© The Author(s) 2014. Among the failure modes of composite materials, delamination is the most striking one. It may result in the reduction of stiffness and long-term performance of composite materials. The initiation stage is very crucial in delamin... Read More about Acoustic emission-based study to characterize the initiation of delamination in composite materials.

Design and optimisation of composite corrugated skin for a span morphing wing (2014)
Presentation / Conference Contribution

The concept of span morphing aircraft is attracting a lot of attention due to the demands to enhance flight performance and control authority. Corrugated laminates provide a good solution for the skin of a span morphing wing due to their extremely an... Read More about Design and optimisation of composite corrugated skin for a span morphing wing.

Efficient solution of the fuzzy eigenvalue problem in structural dynamics (2014)
Journal Article

© Emerald Group Publishing Limited. Purpose - Many analysis and design problems in engineering and science involve uncertainty to varying degrees. This paper is concerned with the structural vibration problem involving uncertain material or geometric... Read More about Efficient solution of the fuzzy eigenvalue problem in structural dynamics.

The effect of corrugated skins on aerodynamic performance (2014)
Journal Article

Corrugated skins provide a good solution to morphing wings due to their highly anisotropic behavior. If the low stiffness corrugation plane is aligned in the chordwise direction, the airfoil shape change is possible. In contrast to the traditional sm... Read More about The effect of corrugated skins on aerodynamic performance.

Observer design for a class of nonlinear systems subject to unknown inputs (2014)
Presentation / Conference Contribution

© 2014 EUCA. We consider a novel method to design an observer for a class of nonlinear discrete-time systems with unknown inputs. Based on Lyapunov functional, we derive a sufficient condition for existence of the designed observer which requires sol... Read More about Observer design for a class of nonlinear systems subject to unknown inputs.

Investigation of the mixed-mode delamination in polymer-matrix composites using acoustic emission technique (2014)
Journal Article

© The Author(s) 2014 Reprints and permissions: sagepub.co.uk/journalsPermissions.nav. This paper is a novel application of acoustic emission (AE) technique to investigate the actual occurring modes of delamination damage (i.e. mode I, mode II and the... Read More about Investigation of the mixed-mode delamination in polymer-matrix composites using acoustic emission technique.

Damage Classification of Sandwich Composites Using Acoustic Emission Technique and k-means Genetic Algorithm (2014)
Journal Article

© 2014, Springer Science+Business Media New York. In this study acoustic emission (AE) technique was used for monitoring mode I delamination test of sandwich composites. Since, during mode I delamination test various damage mechanisms appear, their c... Read More about Damage Classification of Sandwich Composites Using Acoustic Emission Technique and k-means Genetic Algorithm.