Strain rate effects on the mechanical response of polypropylene-based composites deformed at small strains

D. Pessey, N. Bahlouli, Said Ahzi, M. A. Khaleel

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The mechanical properties and response of two polypropylene (PP)-based composites have been determined for small strains and for a range of strain rates in the quasi-static domain. These two materials are talc-filled and unfilled high-impact PP. Uniaxial tensile tests were performed at different strain rates in order to characterize the mechanical response and the strain rate effect. The experimental results showed that both unfilled and talc-filled high-impact PP were sensitive to strain rate and exhibited nonlinear behavior even at relatively low strains. SEM analysis was conducted to obtain a better comprehension of deformation mechanisms involved during loading by observations of the microstructure evolution. For each of these two materials, two existing modeling approaches are proposed. The first one is a three-parameter nonlinear constitutive model based on the experimental results. The second is a micromechanically based approach for the elastic-viscoplastic behavior of the composite materials. The stress-strain curves predicted by these models are in fairly good agreement with our experimental results.

Original languageEnglish
Pages (from-to)690-697
Number of pages8
JournalPolymer Science - Series A
Volume50
Issue number6
DOIs
Publication statusPublished - 1 Jun 2008
Externally publishedYes

Fingerprint

Polypropylenes
Strain rate
Talc
Composite materials
Stress-strain curves
Constitutive models
Mechanical properties
Microstructure
Scanning electron microscopy

ASJC Scopus subject areas

  • Polymers and Plastics
  • Materials Chemistry

Cite this

Strain rate effects on the mechanical response of polypropylene-based composites deformed at small strains. / Pessey, D.; Bahlouli, N.; Ahzi, Said; Khaleel, M. A.

In: Polymer Science - Series A, Vol. 50, No. 6, 01.06.2008, p. 690-697.

Research output: Contribution to journalArticle

@article{00465bcfd4994bd3963cf06550bc8198,
title = "Strain rate effects on the mechanical response of polypropylene-based composites deformed at small strains",
abstract = "The mechanical properties and response of two polypropylene (PP)-based composites have been determined for small strains and for a range of strain rates in the quasi-static domain. These two materials are talc-filled and unfilled high-impact PP. Uniaxial tensile tests were performed at different strain rates in order to characterize the mechanical response and the strain rate effect. The experimental results showed that both unfilled and talc-filled high-impact PP were sensitive to strain rate and exhibited nonlinear behavior even at relatively low strains. SEM analysis was conducted to obtain a better comprehension of deformation mechanisms involved during loading by observations of the microstructure evolution. For each of these two materials, two existing modeling approaches are proposed. The first one is a three-parameter nonlinear constitutive model based on the experimental results. The second is a micromechanically based approach for the elastic-viscoplastic behavior of the composite materials. The stress-strain curves predicted by these models are in fairly good agreement with our experimental results.",
author = "D. Pessey and N. Bahlouli and Said Ahzi and Khaleel, {M. A.}",
year = "2008",
month = "6",
day = "1",
doi = "10.1134/S0965545X08060126",
language = "English",
volume = "50",
pages = "690--697",
journal = "Polymer Science - Series A",
issn = "0965-545X",
publisher = "Maik Nauka-Interperiodica Publishing",
number = "6",

}

TY - JOUR

T1 - Strain rate effects on the mechanical response of polypropylene-based composites deformed at small strains

AU - Pessey, D.

AU - Bahlouli, N.

AU - Ahzi, Said

AU - Khaleel, M. A.

PY - 2008/6/1

Y1 - 2008/6/1

N2 - The mechanical properties and response of two polypropylene (PP)-based composites have been determined for small strains and for a range of strain rates in the quasi-static domain. These two materials are talc-filled and unfilled high-impact PP. Uniaxial tensile tests were performed at different strain rates in order to characterize the mechanical response and the strain rate effect. The experimental results showed that both unfilled and talc-filled high-impact PP were sensitive to strain rate and exhibited nonlinear behavior even at relatively low strains. SEM analysis was conducted to obtain a better comprehension of deformation mechanisms involved during loading by observations of the microstructure evolution. For each of these two materials, two existing modeling approaches are proposed. The first one is a three-parameter nonlinear constitutive model based on the experimental results. The second is a micromechanically based approach for the elastic-viscoplastic behavior of the composite materials. The stress-strain curves predicted by these models are in fairly good agreement with our experimental results.

AB - The mechanical properties and response of two polypropylene (PP)-based composites have been determined for small strains and for a range of strain rates in the quasi-static domain. These two materials are talc-filled and unfilled high-impact PP. Uniaxial tensile tests were performed at different strain rates in order to characterize the mechanical response and the strain rate effect. The experimental results showed that both unfilled and talc-filled high-impact PP were sensitive to strain rate and exhibited nonlinear behavior even at relatively low strains. SEM analysis was conducted to obtain a better comprehension of deformation mechanisms involved during loading by observations of the microstructure evolution. For each of these two materials, two existing modeling approaches are proposed. The first one is a three-parameter nonlinear constitutive model based on the experimental results. The second is a micromechanically based approach for the elastic-viscoplastic behavior of the composite materials. The stress-strain curves predicted by these models are in fairly good agreement with our experimental results.

UR - http://www.scopus.com/inward/record.url?scp=46749103383&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=46749103383&partnerID=8YFLogxK

U2 - 10.1134/S0965545X08060126

DO - 10.1134/S0965545X08060126

M3 - Article

VL - 50

SP - 690

EP - 697

JO - Polymer Science - Series A

JF - Polymer Science - Series A

SN - 0965-545X

IS - 6

ER -