Title: Fracture Process Zone for Concrete for Dynamic Loading

Author(s): J. Du, J. H. Yon, N. M. Hawkins, K. Arakawa, and A. S. Kobayashi

Publication: Materials Journal

Volume: 89

Issue: 3

Appears on pages(s): 252-258

Keywords: concretes; dynamic loads; fracture properties; strains; mechanical properties; Materials Research

DOI: 10.14359/2578

Date: 5/1/1992

Abstract:
A hybrid experimental-numerical procedure was used to determine the fracture process zone (FPZ) associated with a rapidly propagating crack in single-edged notch (SEN), three-point bend concrete specimens that were impact-loaded by a drop weight. The recorded impact load history was used to drive a dynamic finite element code in its propagation mode with assumed FPZ and dynamic elastic properties until a match was obtained between the computed and measured strains. In addition, the computed crack opening displacements (COD) matched with those obtained by moire interferometry, thus validating the inverse analysis for determining the FPZ and dynamic elastic properties of a fracturing concrete specimen.