Publication detail

Particulate Composite Damage: Numerical Estimation of Micro-Crack Propagation Direction

MAJER, Z. MARCIÁN, P. NÁHLÍK, L. HUTAŘ, P. KNÉSL, Z.

Czech title

Poškozování částicových kompozitů: Odhad směru šíření mikro-trhlin

English title

Particulate Composite Damage: Numerical Estimation of Micro-Crack Propagation Direction

Type

conference paper

Language

en

Original abstract

In recent years, particle reinforced composites are widely used due their mechanical properties as construction materials, high-performance engineering materials or protective organic coatings. The paper was mainly focused on the estimating of the interactions of the micro-crack and the particles in the particulate polymer composites. A non-linear material behavior of the matrix was obtained from the experiment and it was used to investigation by means of the finite element method – using ANSYS software. A two-dimensional numerical model was developed and a micro-crack propagation direction was calculated based on the assumption of the linear elastic fracture mechanics. The results indicated that the presence of the interphase between particle and matrix can improve the fracture toughness of the polymer particle composites through debonding process. The paper can contribute to a better understanding of the behavior and failure of the composites with the polymer matrix reinforced by the rigid particles.

Czech abstract

V posledních letech jsou částicové kompozity široce využívány díky jejich mechanickým vlastnostem v nejrůznějších odvětvích, jako například stavební materiály či ochranné nátěrové hmoty. Příspěvek byl zaměřen především na určení vzájemného působení mikro-trhliny a částic v polymerních částicových materiálech. Bylo uvažováno nelineární chování matrice. Data byla získána z experimentu. Byl vytvořen dvourozměrný numerický model a směr šíření trhliny byl vypočten za předpokladu lineárně elastické lomové mechaniky pomocí metody konečných prvků – ANSYS. Výsledky ukázaly, že přítomnost mezivrstvy mezi částicemi a matricí může zlepšit lomovou houževnatost částicových polymerních kompozitů.

English abstract

In recent years, particle reinforced composites are widely used due their mechanical properties as construction materials, high-performance engineering materials or protective organic coatings. The paper was mainly focused on the estimating of the interactions of the micro-crack and the particles in the particulate polymer composites. A non-linear material behavior of the matrix was obtained from the experiment and it was used to investigation by means of the finite element method – using ANSYS software. A two-dimensional numerical model was developed and a micro-crack propagation direction was calculated based on the assumption of the linear elastic fracture mechanics. The results indicated that the presence of the interphase between particle and matrix can improve the fracture toughness of the polymer particle composites through debonding process. The paper can contribute to a better understanding of the behavior and failure of the composites with the polymer matrix reinforced by the rigid particles.

Keywords in Czech

micro-crack propagation částicové kompozity, mezivrstva, lomový mechanismus, metoda konečných prvků, šíření trhlin

Keywords in English

particle reinforced composites, interphase, fracture mechanism, finite element method, micro-crack propagation

RIV year

2014

Released

06.01.2014

Publisher

Trans Tech Publications

Location

Switzerland

ISBN

978-3-03785-934-6

ISSN

1013-9826

Book

MATERIALS STRUCTURE & MICROMECHANICS OF FRACTURE VII

Volume

592-593

Number

1

Pages from–to

445–448

Pages count

4

BIBTEX


@inproceedings{BUT100956,
  author="Zdeněk {Majer} and Petr {Marcián} and Luboš {Náhlík} and Pavel {Hutař} and Zdeněk {Knésl},
  title="Particulate Composite Damage: Numerical Estimation of Micro-Crack Propagation Direction",
  booktitle="MATERIALS STRUCTURE & MICROMECHANICS OF FRACTURE VII",
  year="2014",
  volume="592-593",
  number="1",
  month="January",
  pages="445--448",
  publisher="Trans Tech Publications",
  address="Switzerland",
  isbn="978-3-03785-934-6",
  issn="1013-9826"
}