Alvarez, Nicolas J

Hassager, Ole

Huang, Qian

Shabbir, Aamir

Qian Huang

Nicolas J. Alvarez

Aamir Shabbir

Ole Hassager

Crossref

Physical Review Letters

Multiple Cracks Propagate Simultaneously in Polymer Liquids in Tension

Understanding the mechanism of fracture is essential for material and process design. While the initiation of fracture in brittle solids is generally associated with the preexistence of material imperfections, the mechanism for initiation of fracture in viscoelastic fluids, e.g., polymer melts and solutions, remains an open question. We use high speed imaging to visualize crack propagation in entangled polymer liquid filaments under tension. The images reveal the simultaneous propagation of multiple cracks. The critical stress and strain for the onset of crack propagation are found to be highly reproducible functions of the stretch rate, while the position of initiation is completely random. The reproducibility of conditions for fracture points to a mechanism for crack initiation that depends on the dynamic state of the material alone, while the crack profiles reveal the mechanism of energy dissipation during crack propagation

Online Research Database In Technology

http://orbit.dtu.dk/ws/files/125717061/PhysRevLett.117.087801.pdf

Multiple Cracks Propagate Simultaneously in Polymer Liquids in Tension

Abstract

Similar works

Full text

Available Versions

Crossref

Online Research Database In Technology