Publication detail

NUMERICAL ESTIMATION OF MICRO-CRACK PATHS IN POLYMER PARTICULATE COMPOSITE

MAJER, Z. NÁHLÍK, L.

Czech title

Numerické modelování šíření mikro-trhlin v částicových kompozitních materiálech s polymerní matricí

English title

NUMERICAL ESTIMATION OF MICRO-CRACK PATHS IN POLYMER PARTICULATE COMPOSITE

Type

conference paper

Language

en

Original abstract

Determination of composite mechanical behavior is one of important part during the composite tailoring. The aim of the present work was to estimate a micro-crack behavior in a polymer particulate composite. The composite was investigated by means of the finite element method -using ANSYS software. A two-dimensional three-phase finite element model was developed to analyze the crack growth behavior. The assumptions of the linear elastic fracture mechanics were considered and the Maximum Tangential Stress (MTS) criterion was used to predict the direction of the crack propagation. The effect of the elastic modulus of the interphase on the micro-crack propagation was investigated. The properties of matrix and particles were taken from experiment. It was shown that the interphase properties influence the stress intensity factor KI as well as the micro-crack paths. The results of this paper can contribute to a better understanding of the micro-crack propagation in particulate composites with respect to the interphase.

Czech abstract

Cílem předkládané práce bylo odhadnout chování trhlin šířících se v polymerních kompozitech. Byl vytvořen 2D numerický model který byl pomocí metody konečných prvků analyzován v programu ANSYS za předpokladů lineárně-elastické lomové mechaniky. Vlastnosti matrice i částic byly určeny experimentálně. Výsledky této práce přispívají k lepšímu pochopení lomových vlastností kompozitních materiálů.

English abstract

Determination of composite mechanical behavior is one of important part during the composite tailoring. The aim of the present work was to estimate a micro-crack behavior in a polymer particulate composite. The composite was investigated by means of the finite element method -using ANSYS software. A two-dimensional three-phase finite element model was developed to analyze the crack growth behavior. The assumptions of the linear elastic fracture mechanics were considered and the Maximum Tangential Stress (MTS) criterion was used to predict the direction of the crack propagation. The effect of the elastic modulus of the interphase on the micro-crack propagation was investigated. The properties of matrix and particles were taken from experiment. It was shown that the interphase properties influence the stress intensity factor KI as well as the micro-crack paths. The results of this paper can contribute to a better understanding of the micro-crack propagation in particulate composites with respect to the interphase.

Keywords in English

Polymer Composite; Fracture Mechanics; Interphase; Finite Element Method

RIV year

2014

Released

12.05.2014

ISBN

978-80-214-4871-1

Book

Engineering Mechanics 2014

Edition number

2014

Pages from–to

376–379

Pages count

4

BIBTEX


@inproceedings{BUT119302,
  author="Zdeněk {Majer} and Luboš {Náhlík},
  title="NUMERICAL ESTIMATION OF MICRO-CRACK PATHS IN POLYMER PARTICULATE COMPOSITE",
  booktitle="Engineering Mechanics 2014",
  year="2014",
  month="May",
  pages="376--379",
  isbn="978-80-214-4871-1"
}