On the crack path under mixed mode loading on PUR foams

In this paper are presented the crack initiation angles obtained in polyurethane (PUR) foams under mixed mode loading. Closed cell rigid PUR foams having three different densities 100, 145, and 300 kg/m3 were investigated. Experiments were performed using Asymmetric Semi-Circular Bend and Single Edg...

Full description

Saved in:
Bibliographic Details
Published inFrattura ed integritá strutturale Vol. 9; no. 34
Main Authors Marsavina, L, Linul, E, Voiconi, T, Constantinescu, D M, Apostol, D A
Format Journal Article
LanguageEnglish
Published Cassino Gruppo Italiano Frattura 01.10.2015
Subjects
Asymmetry
Crack initiation
Crack propagation
Criteria
Density
Foams
Fracture mechanics
Load
Polyurethane foam
Polyurethane resins
PUR foams
Online AccessGet full text

Cover

More Information
Summary:In this paper are presented the crack initiation angles obtained in polyurethane (PUR) foams under mixed mode loading. Closed cell rigid PUR foams having three different densities 100, 145, and 300 kg/m3 were investigated. Experiments were performed using Asymmetric Semi-Circular Bend and Single Edge Crack specimens. The obtained crack initiation values were compared with four fracture criteria to introduce: Maximum Tensile Stress, Strain Energy Density, Maximum Energy Release Rate and Equivalent Stress Intensity Factor, and a good agreement was observed. This allow to conclude that the theoretical fracture criteria developed for solid material could be used with success to predict the crack propagation angles in cellular materials like PUR foams.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1971-8993
1971-8993
DOI:10.3221/IGF-ESIS.34.43