Composites and Their Properties

Abstract

He has worked on a broad range of research topics including: structural and functional composites, computational solids mechanics, structural engineering. Recently, his research has been mainly focused on: impact behaviours of FRP laminated composites, structural health monitoring and non-destructive damage evaluation techniques, structural and functional nanocomposites, multi-scale simulations of various physical phenomena in nanocomposites. To date, he has generated over 120 papers on various journals with a high citation number, and over 80 papers on various international conferences. He is now an editorial board member of 4 journals. He has also delivered over 20 Keynote and Invited Talks on various conferences. He has been a reviewer for Carbon, Polymer, CST and other over 60 various journals.

FEM Analysis of Mechanical and Structural Properties of Long Fiber-Reinforced Composites

“…The Chamis model for calculating other elastic constants introduces a square root of the volume of fiber ffiffiffiffiffi ffi V f p , which has in Eqs. (18)(19)(20), the meaning of fiber incompressibility, which is in line with principle of mass conservation.…”

Particle Distribution of Solid Flame Retardants in Infusion Moulded Composites

“…The most relevant process parameters influencing distribution are [1]:the pressure applied during RTM,the temperature of the resin/suspension,the viscosity of the resin/suspension,the particle size of the solid additive,the pore size of the fibrous media,the permeability of the fibre reinforcement,the fibre content of the composite,the orientation of the fibres,the location of the inlet,the filling time.…”

“…However, the process parameters mentioned above are closely related to each other, e.g., when the temperature increases, the viscosity of the resin decreases, the resin can flow in the cavity more easily, the filling time decreases, and the injection pressure is lower [1]. In the reverse case, when the temperature is lower, the viscosity increases, and so do the filling time and the pressure [1]. There are also connections between the other parameters, which should be taken into consideration.…”

“…Liquid transfer moulding techniques, including resin transfer moulding (RTM), are increasingly used for the production of fibre-reinforced polymer composites. Their advantages over hand lamination (high productivity at a lower cost, increased fibre-to-resin ratio, controlled dimensional tolerances providing outstanding reproducibility) allow their application in the production of structural components for the automotive and aircraft industries [1,2]. These transport industries have strict safety requirements, which can only be met if the flame retardant (FR) properties of the polymer composite matrix materials are improved.…”

Damping properties of non-conductive composite materials for applications in power transmission pylons

“…The long-wave galloping vibration is characterized by very low frequencies of 0.1 − 1 Hz and temperatures below 0 • C. 5,6 Non-symmetrical ice aggregations along the overhead transmission lines in combination with wind speeds between 4 and 20 m/s 7,8 can initiate self-excitation which may lead to catastrophic failure of the entire structure due to excessive vibration amplitudes at resonance. 9,10 This issue can be mitigated by increasing the energy dissipation in the material used in the power pylon.…”