Comparisons of deformation and fracture behaviour of PC/ABS blend and ABS copolymer under dynamic shear loading

Woei-Shyan Lee, H. C. Shen

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The dynamic shear deformation and fracture characteristics of PC/ABS blend and ABS copolymer with regard to the relation between mechanical properties and strain rate, are studied experimentally using a torsional split Hopkinson bar at room temperature under strain rates ranging from 8 × 102 s-1 to 3·4 × 103 s-1. Fracture phenomena are analysed by scanning electron microscopy and correlated with macroscopic behaviour. The relative properties and fracture mechanism of both polymers are also compared. Results show that strain rate enhances shear strength of both PC/ABS blend and ABS, but fracture shear strain tends to decrease with increasing strain rate. ABS exhibits better ductility and lower shear strength. For both polymers, strain rate sensitivity increases with increasing range of strain rate, while an inverse tendency occurs for activation volume. Higher strain rate sensitivity and lower activation volume are found in PC/ABS blend. PC/ABS blend fracture is dominated by mixed shearing and tearing, but ABS fracture shows only shearing. Due to the increasing deformation heat, fracture surface viscoplastic flow for both polymers increases with increasing strain rate, inducing lower flow resistance and lower fracture strain at higher stain rates. The viscoplastic flow behaviour in ABS is more active.

Original languageEnglish
Pages (from-to)8-15
Number of pages8
JournalMaterials Science and Technology
Volume20
Issue number1
DOIs
Publication statusPublished - 2004 Jan 1

Fingerprint

strain rate
Strain rate
copolymers
Copolymers
shear
viscoplasticity
Polymers
shear strength
shearing
Shearing
Shear strength
polymers
Chemical activation
activation
flow resistance
tearing
shear strain
Shear strain
ductility
Shear deformation

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

@article{723bb484fbef456995ae805af628b5aa,
title = "Comparisons of deformation and fracture behaviour of PC/ABS blend and ABS copolymer under dynamic shear loading",
abstract = "The dynamic shear deformation and fracture characteristics of PC/ABS blend and ABS copolymer with regard to the relation between mechanical properties and strain rate, are studied experimentally using a torsional split Hopkinson bar at room temperature under strain rates ranging from 8 × 102 s-1 to 3·4 × 103 s-1. Fracture phenomena are analysed by scanning electron microscopy and correlated with macroscopic behaviour. The relative properties and fracture mechanism of both polymers are also compared. Results show that strain rate enhances shear strength of both PC/ABS blend and ABS, but fracture shear strain tends to decrease with increasing strain rate. ABS exhibits better ductility and lower shear strength. For both polymers, strain rate sensitivity increases with increasing range of strain rate, while an inverse tendency occurs for activation volume. Higher strain rate sensitivity and lower activation volume are found in PC/ABS blend. PC/ABS blend fracture is dominated by mixed shearing and tearing, but ABS fracture shows only shearing. Due to the increasing deformation heat, fracture surface viscoplastic flow for both polymers increases with increasing strain rate, inducing lower flow resistance and lower fracture strain at higher stain rates. The viscoplastic flow behaviour in ABS is more active.",
author = "Woei-Shyan Lee and Shen, {H. C.}",
year = "2004",
month = "1",
day = "1",
doi = "10.1179/026708304225010316",
language = "English",
volume = "20",
pages = "8--15",
journal = "Materials Science and Technology",
issn = "0267-0836",
publisher = "Maney Publishing",
number = "1",

}

Comparisons of deformation and fracture behaviour of PC/ABS blend and ABS copolymer under dynamic shear loading. / Lee, Woei-Shyan; Shen, H. C.

In: Materials Science and Technology, Vol. 20, No. 1, 01.01.2004, p. 8-15.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Comparisons of deformation and fracture behaviour of PC/ABS blend and ABS copolymer under dynamic shear loading

AU - Lee, Woei-Shyan

AU - Shen, H. C.

PY - 2004/1/1

Y1 - 2004/1/1

N2 - The dynamic shear deformation and fracture characteristics of PC/ABS blend and ABS copolymer with regard to the relation between mechanical properties and strain rate, are studied experimentally using a torsional split Hopkinson bar at room temperature under strain rates ranging from 8 × 102 s-1 to 3·4 × 103 s-1. Fracture phenomena are analysed by scanning electron microscopy and correlated with macroscopic behaviour. The relative properties and fracture mechanism of both polymers are also compared. Results show that strain rate enhances shear strength of both PC/ABS blend and ABS, but fracture shear strain tends to decrease with increasing strain rate. ABS exhibits better ductility and lower shear strength. For both polymers, strain rate sensitivity increases with increasing range of strain rate, while an inverse tendency occurs for activation volume. Higher strain rate sensitivity and lower activation volume are found in PC/ABS blend. PC/ABS blend fracture is dominated by mixed shearing and tearing, but ABS fracture shows only shearing. Due to the increasing deformation heat, fracture surface viscoplastic flow for both polymers increases with increasing strain rate, inducing lower flow resistance and lower fracture strain at higher stain rates. The viscoplastic flow behaviour in ABS is more active.

AB - The dynamic shear deformation and fracture characteristics of PC/ABS blend and ABS copolymer with regard to the relation between mechanical properties and strain rate, are studied experimentally using a torsional split Hopkinson bar at room temperature under strain rates ranging from 8 × 102 s-1 to 3·4 × 103 s-1. Fracture phenomena are analysed by scanning electron microscopy and correlated with macroscopic behaviour. The relative properties and fracture mechanism of both polymers are also compared. Results show that strain rate enhances shear strength of both PC/ABS blend and ABS, but fracture shear strain tends to decrease with increasing strain rate. ABS exhibits better ductility and lower shear strength. For both polymers, strain rate sensitivity increases with increasing range of strain rate, while an inverse tendency occurs for activation volume. Higher strain rate sensitivity and lower activation volume are found in PC/ABS blend. PC/ABS blend fracture is dominated by mixed shearing and tearing, but ABS fracture shows only shearing. Due to the increasing deformation heat, fracture surface viscoplastic flow for both polymers increases with increasing strain rate, inducing lower flow resistance and lower fracture strain at higher stain rates. The viscoplastic flow behaviour in ABS is more active.

UR - http://www.scopus.com/inward/record.url?scp=0742323526&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0742323526&partnerID=8YFLogxK

U2 - 10.1179/026708304225010316

DO - 10.1179/026708304225010316

M3 - Article

VL - 20

SP - 8

EP - 15

JO - Materials Science and Technology

JF - Materials Science and Technology

SN - 0267-0836

IS - 1

ER -