Impact of Strain-Induced Crystallization on Fast Crack Growth in Stretched <i>cis</i>-1,4-Polyisoprene Rubber
Ryosuke Osumi, Tomohiro Yasui, Ruito Tanaka, Thanh‐Tam Mai, Hideaki Takagi, Nobutaka Shimizu, Katsuhiko Tsunoda, Shinichi Sakurai, Kenji Urayama
Abstract
. The characteristics of the crack-tip strain field are also significantly influenced by the SIC-driven hardening: The crack-tip opening displacement increases with increasing λ at λ < λ* but exhibits an abrupt reduction beyond λ*. The crack-tip singularity and the area of strain increment caused by the crack growth change discontinuously around λ*. The abrupt variations in these crack-tip characteristics result from the considerable differences in the mechanical properties prior to the crack growth between the entirely amorphous state at λ < λ* and the partially crystallized state at λ > λ*.
Topics & Concepts
Materials scienceComposite materialCrack closureCrack tip opening displacementStrain hardening exponentCrack growth resistance curveNatural rubberCrystallizationHardening (computing)ElastomerAmorphous solidShear (geology)Fracture mechanicsCrystallographyLayer (electronics)Organic chemistryChemistryPolymer Nanocomposites and PropertiesPolymer crystallization and propertiesElasticity and Material Modeling