Size effect: Influence of proximity of fracture process zone to specimen boundary

By Xiaozhi Hu, K. Duan. 2007

144 citations recorded by the source corpus.

Size effect on strength of cementitious materials was studied successfully many years ago by a crack-bridging model through detailing the influence of the resistance R-curve behaviour on quasi-brittle fracture. The condition that specimens of different sizes have to be geometrically similar, commonly assumed for size effect study, was proven unnecessary. The present study emphasizing the interaction between the fracture process zone and structure boundary agrees with the crack-bridging analysis, and further points out that physical size itself is not the key mechanism for the apparent size effect.

View Paper: https://www.semanticscholar.org/paper/65a10ba7ddc7529799fd53145620da015cbddaa3

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

1. K. Duan
2. Xiaozhi Hu
3. C. Hoover
4. Zdenek P. Bazant
5. Mingdong Wei

Citations in the corpus

• Determination of Tensile Strength and Fracture Toughness of Granite Using Notched Three-Point-Bend Samples (2016, unknown): “The formation of the damage zone, or fracture process zone (FPZ), at the notch tip is considered in this study by modifying an existing fracture mechanics model (Hu and Duan 2007, 2008) when the tensile strength and fracture toughness are deduced from the peak load measurements.”
• Size effect and quasi-brittle fracture: the role of FPZ (2008, background): “Neglecting all the derivation details, the BE-induced quasi-brittle fracture of small specimens can then be written as (Duan and Hu 2004a,b, 2006; Hu and Duan 2007):”