Experimental Analysis of Fast Crack Growth in Elastomers

Crack growth often leads to catastrophic failure of rubber products. Understanding the crack growth mechanism is important for toughening elastomers. This article described in summarized form our recent experimental investigations on fast crack growth in elastomers. The crack-tip features, including...

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Bibliographic Details
Published inDegradation of Elastomers in Practice, Experiments and Modeling pp. 239 - 272
Main Authors Mai, Thanh-Tam, Morishita, Yoshihiro, Tsunoda, Katsuhiko, Urayama, Kenji
Format Book Chapter
LanguageEnglish
Published Cham Springer International Publishing 01.01.2023
SeriesAdvances in Polymer Science
Subjects
Biaxial loading
Crack growth
Crack propagation
DIC
Elastomers
Filled rubbers
Intersonic crack
Mullins effect
Strain field
Super-shear crack
Viscoelasticity
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Summary:Crack growth often leads to catastrophic failure of rubber products. Understanding the crack growth mechanism is important for toughening elastomers. This article described in summarized form our recent experimental investigations on fast crack growth in elastomers. The crack-tip features, including the crack-tip profiles and the local crack-tip strain fields, are revealed for a quasi-stationary crack and fast-moving cracks ranging from subsonic to super-shear (intersonic) cracks. The velocity and crack-tip features of fast-moving cracks are discussed in relation to the nonlinear elasticity and viscoelasticity of bulk elastomers. The effects of anisotropic stress softening (anisotropic Mullins effect), which is pronounced in filler-reinforced elastomers, on the crack-tip properties are elucidated. We also describe the characterization of quasi-stationary cracks in elastomers subjected to various types of biaxial loading, providing a basis for the fracture mechanics of elastomers under multiaxial deformation.
ISBN:3031151631
9783031151637
ISSN:0065-3195
1436-5030
DOI:10.1007/12_2021_109