In this study the emergence of the critical status of crack growth in the chevron-notch fracture test on elastic-plastic materials is discussed. The theoretical analysis and experimental results showed that the critical crack length for elastic-plastic materials is not a constant, and that it is not only a function of material properties, but also a function of the speed of crack growth. In particular, it is shown theoretically that for elastic-plastic materials the critical status of crack growth often occurs after the peak load.
|Original language||English (US)|
|Number of pages||11|
|Journal||Engineering Fracture Mechanics|
|State||Published - Sep 1998|
Bibliographical noteFunding Information:
This study was supported by MDRCBB and the 3M Company, Dental Products Division.
- Chevron-notch fracture test
- Critical crack length
- Critical status of crack growth
- Fracture toughness of elastic-plastic materials