Thickness effect on fracture in high impact polystyrene

O. F. Yap; Y. W. Mai; B. Cotterell

doi:10.1007/BF00745563

Thickness effect on fracture in high impact polystyrene

O. F. Yap, Y. W. Mai, B. Cotterell

Research output: Journal article publication › Journal article › Academic research › peer-review

43 Citations (Scopus)

Abstract

The effect of thickness on the fracture behaviour of a high-impact polystyrene containing approximately 7% rubber is studied. For thicknesses below 10 mm plane stress ductile tearing occurs and deep edge notched tension specimens are used to obtain the specific essential work of fracture (w_e) in plane strain. Mixed mode plane strain-plane stress fracture is predominant in single-edge notched tension specimens with thicknesses above 10 mm. By assuming that the plane stress layers are given by the overall fracture toughness (K_c) a modified bimodal fracture analysis based on linear elastic fracture mechanics concepts is presented to analyse the experimental results. The plane strain fracture toughness G_c1 (=K_c1²/E) is in good agreement with w_e. It is shown that K_c1 for HIPS is larger than that of the polystyrene matrix alone due to the toughening effect of the rubber at the crack tip vicinity.

Original language	English
Pages (from-to)	657-668
Number of pages	12
Journal	Journal of Materials Science
Volume	18
Issue number	3
DOIs	https://doi.org/10.1007/BF00745563
Publication status	Published - Mar 1983
Externally published	Yes

ASJC Scopus subject areas

Ceramics and Composites
Materials Science (miscellaneous)
General Materials Science
Mechanics of Materials
Mechanical Engineering
Polymers and Plastics

More information

10.1007/BF00745563

Cite this

@article{0c69699c82314932800a7d16a6262cfb,

title = "Thickness effect on fracture in high impact polystyrene",

abstract = "The effect of thickness on the fracture behaviour of a high-impact polystyrene containing approximately 7% rubber is studied. For thicknesses below 10 mm plane stress ductile tearing occurs and deep edge notched tension specimens are used to obtain the specific essential work of fracture (we) in plane strain. Mixed mode plane strain-plane stress fracture is predominant in single-edge notched tension specimens with thicknesses above 10 mm. By assuming that the plane stress layers are given by the overall fracture toughness (Kc) a modified bimodal fracture analysis based on linear elastic fracture mechanics concepts is presented to analyse the experimental results. The plane strain fracture toughness Gc1 (=Kc12/E) is in good agreement with we. It is shown that Kc1 for HIPS is larger than that of the polystyrene matrix alone due to the toughening effect of the rubber at the crack tip vicinity.",

author = "Yap, {O. F.} and Mai, {Y. W.} and B. Cotterell",

year = "1983",

month = mar,

doi = "10.1007/BF00745563",

language = "English",

volume = "18",

pages = "657--668",

journal = "Journal of Materials Science",

issn = "0022-2461",

publisher = "Springer",

number = "3",

}

TY - JOUR

T1 - Thickness effect on fracture in high impact polystyrene

AU - Yap, O. F.

AU - Mai, Y. W.

AU - Cotterell, B.

PY - 1983/3

Y1 - 1983/3

N2 - The effect of thickness on the fracture behaviour of a high-impact polystyrene containing approximately 7% rubber is studied. For thicknesses below 10 mm plane stress ductile tearing occurs and deep edge notched tension specimens are used to obtain the specific essential work of fracture (we) in plane strain. Mixed mode plane strain-plane stress fracture is predominant in single-edge notched tension specimens with thicknesses above 10 mm. By assuming that the plane stress layers are given by the overall fracture toughness (Kc) a modified bimodal fracture analysis based on linear elastic fracture mechanics concepts is presented to analyse the experimental results. The plane strain fracture toughness Gc1 (=Kc12/E) is in good agreement with we. It is shown that Kc1 for HIPS is larger than that of the polystyrene matrix alone due to the toughening effect of the rubber at the crack tip vicinity.

AB - The effect of thickness on the fracture behaviour of a high-impact polystyrene containing approximately 7% rubber is studied. For thicknesses below 10 mm plane stress ductile tearing occurs and deep edge notched tension specimens are used to obtain the specific essential work of fracture (we) in plane strain. Mixed mode plane strain-plane stress fracture is predominant in single-edge notched tension specimens with thicknesses above 10 mm. By assuming that the plane stress layers are given by the overall fracture toughness (Kc) a modified bimodal fracture analysis based on linear elastic fracture mechanics concepts is presented to analyse the experimental results. The plane strain fracture toughness Gc1 (=Kc12/E) is in good agreement with we. It is shown that Kc1 for HIPS is larger than that of the polystyrene matrix alone due to the toughening effect of the rubber at the crack tip vicinity.

UR - http://www.scopus.com/inward/record.url?scp=0020718941&partnerID=8YFLogxK

U2 - 10.1007/BF00745563

DO - 10.1007/BF00745563

M3 - Journal article

AN - SCOPUS:0020718941

SN - 0022-2461

VL - 18

SP - 657

EP - 668

JO - Journal of Materials Science

JF - Journal of Materials Science

IS - 3

ER -

Thickness effect on fracture in high impact polystyrene

Abstract

ASJC Scopus subject areas

More information

Other files and links

Fingerprint

Cite this