Premium
Cracking behaviours of rock‐like materials containing three preexisting flaws after high‐temperature treatments
Author(s) -
Zhou Xiaoping,
Fu Liang,
Cheng Hao,
Berto Filippo
Publication year - 2021
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/ffe.13382
Subject(s) - cracking , coalescence (physics) , materials science , composite material , fracture mechanics , physics , astrobiology
The mechanical properties and cracking behaviours of rock‐like materials containing three preexisting flaws after high‐temperature treatments are studied. The temperature variations of 25°C, 70°C and 140°C are chosen to explore the influence of temperature, and the ligament angle variations of 75°, 90° and 105° are chosen to explore the effect of preexisting flaws. The crack initiation and coalescence modes and specimen failure after high‐temperature treatments are recorded by a high‐speed dynamic analysis system. Seven modes of crack initiation and ten types of crack coalescence are recorded in the rock‐like specimens. With an increase in temperature and ligament angle, the mechanical properties such as peak strength, peak strain and crack initiation stress change regularly. Furthermore, the experimental results demonstrate that the temperature has a significant impact on the complete stress–strain curves and cracking behaviours of flawed rock‐like materials.