Abstract
For quasi-brittle materials like concrete, rock and ceramic it is not possible to determine fracture toughness using laboratory-sized specimens and linear elastic fracture mechanics. This inapplicability of the conventional fracture mechanics is due to fracture process zone, R-curve type of behavior and precritical stable crack growth. In this keynote paper, a two-parameter fracture model developed at Northwestern University is described. The model is based on observations of fracture processes using laser holography as well as acoustic emission measurements.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 3-14 |
| Number of pages | 12 |
| Journal | Engineering Fracture Mechanics |
| Volume | 35 |
| Issue number | 1-3 |
| DOIs | |
| State | Published - 1990 |
ASJC Scopus subject areas
- General Materials Science
- Mechanics of Materials
- Mechanical Engineering