Abstract
A theoretical model for cavitation in viscoelastic media is developed which incorporates both interfacial and rheological arguments. The properties of interfacial and bulk cavities are correlated, and the influence of time-dependent cavity vapor pressure Pν(t) or hydrostatic tension σ̄(t) are correlated with the extension ratio λ=r/r0 of the cavity surface in a stress relaxation model. Experimental data are analysed for cavitation by peeling, tensile loading of butt joints, and superheating of swollen elastomers. For each case an agreement between theory and experiments is obtained which identifies the specific mode of cavitation and indicates for all cases the presence of prenucleated cavities with radii r0⩾1.0 microns. The direct correlation of peeling stresses with viscoelastic restraints to interfacial cavitation provides a new type of experimental confirmation for the applicability of rate-temperature superposition to peeling data. The implicit assumption that the interfacial failure stress depends upon frequency or strain rate in the same fashion as cohesive failure stress is confirmed by cavitation theory for the general case where surface tension constraints are negligible compared to viscoelastic constraints.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
