Deformation rate dependence of work of fracture parameters in polybutylene terephthalate (PBT)

被引：26

作者：

Hashemi, S ^{[1
]}

机构：

[1] Univ N London, Sch Polymer Technol, London N7 8DB, England

来源：

POLYMER ENGINEERING AND SCIENCE | 2000年 / 40卷 / 01期

关键词：

D O I：

10.1002/pen.11146

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Essential work of fracture (EWF) analysis was used to study the effect of loading rate (v = 2, 5, 25 and 50 mm/min) on fracture toughness of PET film of thicknesses 0.175, 0.275, 0.375 and 0.5 mm. Using single edge notched tension (SENT) specimens, it was found that the specific essential work of fracture, w(e), increases slightly with increasing loading rate but Within the specified range of loading rate, it showed no significant variation with respect to thickness. The specific non-essential work of fracture, beta w(p), decreased with increasing rate and increasing thickness.

引用

页码：132 / 138

页数：7

共 15 条

[1]

ARKHIREYEVA A, 1999, IN PRESS J MAT SCI

[2]

Broberg K. B., 1968, INT J FRAC MECH, V4, P11

[3] DETERMINATION OF THE FRACTURE-TOUGHNESS OF POLYMERIC FILMS BY THE ESSENTIAL WORK METHOD [J].

CHAN, WYF ;

WILLIAMS, JG .

POLYMER, 1994, 35 (08) :1666-1672

[4] PLANE-STRESS FRACTURE OF POLYCARBONATE FILMS [J].

HASHEMI, S .

JOURNAL OF MATERIALS SCIENCE, 1993, 28 (22) :6178-6184

[5] Work of fracture of PBT/PC blend: Effect of specimen size, geometry, and rate of testing [J].

Hashemi, S .

POLYMER ENGINEERING AND SCIENCE, 1997, 37 (05) :912-921

[6]

HASHEMI S, 1999, UNPUB POLYM ENG SCI

[7]

HASHEMI S, 1997, J MATER SCI, V32, P1573

[8]

HILL RH, 1952, J MECH PHYS SOLIDS, V4, P19

[9] Deformation rate dependence of the essential and non-essential work of fracture parameters in an amorphous copolyester [J].

Karger-Kocsis, J ;

Czigany, T ;

Moskala, EJ .

POLYMER, 1998, 39 (17) :3939-3944

[10] Thickness dependence of work of fracture parameters of an amorphous copolyester [J].

KargerKocsis, J ;

Czigany, T ;

Moskala, EJ .

POLYMER, 1997, 38 (18) :4587-4593

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