Piotr Szablewski’s research while affiliated with Lodz University of Technology and other places

This study deals with the development of a simple geometric model of fibre-reinforced plastic (FRP) composite. The composite uses an epoxy resin as the matrix, and one layer of a plane wave E-glass fabric as the reinforcement. Using theoretical considerations (based on this model), it is feasible to calculate engineering constants useful for stress analysis. The work consists of developing constitutive model of specific textile composite material (plain weave). There is a numerical constitutive model which approximates the mechanical behavior at the local scale. The method of calculation presented in this study can be applied to other models of FRP composites with other woven fabric geometries, such as Pierce’s model of plane wave, Pierce’s elliptic model, Kemp model with race track cross-section, and Hearle’s model. © 2015, National Institute of Science Communication and Information Resources (NISCAIR). All rights reserved.

This article deals with a simple geometric model of fiber-reinforced plastic composite (FRP composite). The composite uses an epoxy resin as the matrix and one layer of a plain weave E-Glass fabric as the reinforcement. Using theoretical considerations (on the basis of this model), it is feasible to calculate basic mechanical parameters useful for stress analysis. Such considerations and methods for calculating will be presented in this paper. The work consists in developing constitutive model of specific textile composite material – presently plain weave. There is a numerical constitutive model which approximates the mechanical behavior at the local scale. All results in this paper have been obtained using computer program created in Mathematica environment. The geometric model is based on the model of R.A. Naik, however, the validity and limitations are studied carefully. The method of calculation presented in this article can be applied to other weave patterns of FRP composites with other woven fabric geometries such as: Pierce’s model of plain weave, Pierce’s elliptic model, Kemp model with race track cross-section, and Hearle’s model.

In many problems from the field of textile engineering (e.g., fabric folding, motion of the sewing thread) it is necessary to investigate the motion of the objects in dynamic conditions, taking into consideration the influence of the forces of inertia and changing in the time boundary conditions. This paper deals with the model analysis of the motion of the flat textile structure using Lagrange's equations in two variants: without constraints and with constraints. The motion of the objects is under the influence of the gravity force. Lagrange's equations have been used for discrete model of the structure.

This paper describes a simple sinusoidal geometrical model of textile composites. On the basis of this model, how, to obtain certain geometrical parameters that fully characterize the geometry of the composite structure will be presented. Using geometrical considerations, it is possible to obtain from this model basic mechanical parameters that are veri useful for further strength analysis. Such mechanical considerations and a method for calculating mechanical parameters will be presented in future articles. On the basis of the above-mentioned theoretical considerations, a special computer program was developed The method of calculation presented in this paper can be applied to more complicated models of textile composites.