Premium
Characterization of short fiber reinforced polymers
Author(s) -
Röhrig Céline,
Diebels Stefan
Publication year - 2016
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201610182
Subject(s) - polybutylene terephthalate , materials science , composite material , ultimate tensile strength , digital image correlation , characterization (materials science) , tensile testing , polymer , plasticity , fiber , uniaxial tension , composite number , work (physics) , mechanical engineering , nanotechnology , polyester , engineering
This contribution presents a possibility how to characterize composite materials with respect to experimental testing. Furthermore a modeling approach is presented based on the experimental results. Composite materials, like short fiber reinforced polymers, are of great interest because of their good properties for industrial applications. In this work a polybutylene terephthalate (PBT) reinforced by short glass fibers (GF) is characterized. An overview of the properties of the investigated material which are obtained from results of cyclic uniaxial tensile tests under monotonous and cyclic loading at a constant strain rate is given. The short fiber reinforced PBT shows elasto‐plastic material behavior and damage. The complete strain information in all directions is obtained by an optical area analysis over the whole surface using a digital image correlation (DIC) software. The optical sytem uses four cameras to realize a 360°‐3D‐measurement by a two‐sided stereography [2]. Based on the results of the experimental investigations with uniaxial tensile tests, a one‐dimensional macroscopic model to describe the material behavior is introduced and the results of the simulation are provided. The modeling description takes into consideration the observed behavior like elasto‐plasticity and damage. (© 2016 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)