Abstract
The Double Cantilever Beam (DCB) Mode I fracture testing has been widely used in fracture testing of especially fiber reinforced polymer composites and adhesive joints. Application of classical DCB testing to plain concrete or unreinforced ceramic specimens is not straightforward and cannot be carried out as in fiber reinforced polymer composites. Instead, an indirect tension approach is proposed in this study. Tests of notched geometrically similar DCB specimens made of normal and high strength concretes loaded eccentrically at the cantilever beam-column ends in compression have been carried out. Classical Type II size effect analyses of peak loads obtained from these tests are performed. The Microplane Model M7 is calibrated independently using uniaxial compression tests and employed to predict the peak loads of both tested and virtual geometrically similar DCB specimens. The same size effect analyses are performed on the predicted peak loads and the errors in the fracture parameters of the classical size effect analysis are determined.
Original language | English |
---|---|
Pages (from-to) | 76-86 |
Number of pages | 11 |
Journal | International Journal of Solids and Structures |
Volume | 162 |
DOIs | |
Publication status | Published - 1 May 2019 |
Bibliographical note
Publisher Copyright:© 2018
Funding
The third and fourth authors thank Gazi Universitesi for the partial support received under grant No: 06/2004-20 to carry out the experiments. The first and second authors have no acknowledgements.
Funders | Funder number |
---|---|
Gazi Universitesi | |
Gazi Üniversitesi | 06/2004-20 |
Keywords
- Concrete
- Double cantilever beam specimen
- Fracture mechanics
- Microplane model M7
- Size effect