Crack Length Influence on Stress Intensity Factors for the Asymmetric Four-point Bending Testing of a Polyurethane Foam

被引：0

作者：

Apostol, Dragos Alexandru ^{[1
]}

Stuparu, Florin ^{[1
]}

Constantinescu, Dan Mihai ^{[1
]}

Marsavina, Liviu ^{[2
]}

Linul, Emanoil ^{[2
]}

机构：

[1] Univ Politehn Bucuresti, Dept Strength Mat, 1-7 Polizu Gh, Bucharest 011061, Romania

[2] Politehn Univ Timisoara, Dept Mech & Strength Mat, Mihai Viteazu Blvd, Timisoara 300222, Romania

来源：

MATERIALE PLASTICE | 2016年 / 53卷 / 02期

关键词：

mixed-mode; polyurethane foams; asymmetric four-point bending; crack length; FRACTURE-TOUGHNESS;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Mixed mode four-point testing is performed on polyurethane foams. This paper presents only the results on the stress intensity factors (SIFs) obtained experimentally for a density of 325 kg/m(3), although tests were done for three foam densities. An asymmetric four-point bending setup was used for determining the critical SIFs in Mode I and Mode II, and discussions on the influence of the initial crack length on the SIF values are done. As initial crack length is increased the theoretical predictions give a better comparison to experimentally obtained results.

引用

页码：280 / 282

页数：3

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