Shear deformation and fracture behaviour of Polycarbonate-Acrylonitrile/Butadiene/Styrene blend at high strain rates

Woei-Shyan Lee, Chi Feng Lin, Hung Che Shen

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The purpose of the present research was to study systematically the shear deformation and fracture behaviour of a polycarbonate-acrylonitrile/ butadiene/styrene (PC-ABS) blend subjected to high shear strain at high strain rate, using a torsional, split Hopkinson bar. Thin walled tube specimens were deformed at room temperature under strain rates ranging from 102 to 5 × 103 s-1. The effects of strain rate on shear flow response, strain rate sensitivity, thermal activation volume, and shear modulus were evaluated. Damage initiation, propagation, and fracture mechanisms were studied by scanning electron microscopy. Correlations between dynamic flow response and observed fracture features are characterised and discussed in terms of loading conditions. The data indicate that the dynamic shear response of the PC-ABS blend is greatly affected by applied strain rate. An increase in shear stress and shear modulus with strain rate was observed. Fracture strains decrease with increased loading rate. Tearing and shear fracture are the major fracture mechanisms and depend quite strongly on the strain rate.

Original languageEnglish
Pages (from-to)484-489
Number of pages6
JournalPlastics, Rubber and Composites Processing and Applications
Volume30
Issue number10
Publication statusPublished - 2001

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polycarbonate
Acrylonitrile
Styrene
Polycarbonates
Butadiene
Shear deformation
Strain rate
Elastic moduli
Shear strain
Shear flow
1,3-butadiene
Shear stress

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

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Shear deformation and fracture behaviour of Polycarbonate-Acrylonitrile/Butadiene/Styrene blend at high strain rates. / Lee, Woei-Shyan; Lin, Chi Feng; Shen, Hung Che.

In: Plastics, Rubber and Composites Processing and Applications, Vol. 30, No. 10, 2001, p. 484-489.

Research output: Contribution to journalArticle

TY - JOUR

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AU - Lee, Woei-Shyan

AU - Lin, Chi Feng

AU - Shen, Hung Che

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AB - The purpose of the present research was to study systematically the shear deformation and fracture behaviour of a polycarbonate-acrylonitrile/ butadiene/styrene (PC-ABS) blend subjected to high shear strain at high strain rate, using a torsional, split Hopkinson bar. Thin walled tube specimens were deformed at room temperature under strain rates ranging from 102 to 5 × 103 s-1. The effects of strain rate on shear flow response, strain rate sensitivity, thermal activation volume, and shear modulus were evaluated. Damage initiation, propagation, and fracture mechanisms were studied by scanning electron microscopy. Correlations between dynamic flow response and observed fracture features are characterised and discussed in terms of loading conditions. The data indicate that the dynamic shear response of the PC-ABS blend is greatly affected by applied strain rate. An increase in shear stress and shear modulus with strain rate was observed. Fracture strains decrease with increased loading rate. Tearing and shear fracture are the major fracture mechanisms and depend quite strongly on the strain rate.

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