Experimental evidence of preceding strain disturbances in viscoelastic dynamic crack propagation

Issue title: Memorial Issue for Professor K.B. Broberg

Article type: Research Article

Authors: Kobayashi, Akira^; | Ohtani, Nobuo

Affiliations: Professor Emeritus, The University of Tokyo, Tokyo, Japan | Professor Emeritus, Maebashi Institute of Technology, Maebashi, Japan

Note: [] Address for correspondence: E-mail: ogihara@rs.noda.tus.ac.jp.

Abstract: The preceding wavy strain disturbances ahead of a running crack in the viscoelastic solid are observed through high speed Schlieren photography, showing a possibility of intermittent crack propagation. It is found that the effect of breaking stress is predominant in these wavy strain disturbances.

Keywords: Viscoelastic crack propagation, preceding wavy strain disturbances, Schlieren photography, inverse problem

DOI: 10.3233/SFC-2009-0103

Journal: Strength, Fracture and Complexity, vol. 6, no. 1-2, pp. 25-30, 2010