Fatigue crack growth can be strongly influenced by crack closure, i. e., the contacting of the opposing faces of a fatigue crack above the minimum load in a loading cycle. This crack closure shields the crack tip from the full stress field, but different views are held regarding the extent of this shielding. The type of closure, whether it be plasticity-induced, or roughness-induced may also pl...

Abstract The present work reports an efficient way of capturing real-time crack propagation in concrete structures. modified spectral analysis based algorithm and finite element modeling (FEM) were utilised for detection quantitative propagation. Crack was captured cement-based composite (CBC) containing saw dust M20 grade under compressive loading using a simple inexpensive 8-megapixel mobile ...

This paper presents a series of numerical simulations to investigate blast-induced crack propagation in rock specimens embedded with pre-existing fracture. The simulation is conducted using the particle-based discrete element method, which can effectively capture many important geomechanical processes such as solid vibration, growth and fracture sliding. Particles are assembled based on grain s...