Gravity hydraulic fracturing: a method to create self‐driven fractures

S Salimzadeh, RW Zimmerman… - Geophysical Research …, 2020 - Wiley Online Library
In this study, we investigate the possibility of using a high‐density fluid to induce downward
fracture growth in a hydraulic fracturing process. We propose a mathematical model to …

Correlation of shape and size of methane bubbles in fine-grained muddy aquatic sediments with sediment fracture toughness

R Katsman - Journal of Structural Geology, 2015 - Elsevier
Gassy sediments contribute to destabilization of aquatic infrastructure, air pollution, and
global warming. In the current study a precise shape and size of the buoyant mature …

State functions: the milestone of fracture

A Ranjbaran, M Ranjbaran - Archive of Applied Mechanics, 2016 - Springer
The fracture phenomenon is defined via the change of state of structure (entity) between the
intact and the fractured end states as the function of the state variable. The twin state …

[PDF][PDF] New generalized weight function for stress intensity factor

A Ranjbaran - NED University Journal of Research, 2016 - researchgate.net
The aim of this paper is to propose a generic weight function for computation of the stress 7
intensity factor in fracture mechanics. In this study two generic state functions and a generic …

Mixed mode stress intensity factors for elliptical subsurface cracks in an elastic half‐space subjected to a uniform normal loading

R Ghajar, J Alizadeh K - … & Fracture of Engineering Materials & …, 2013 - Wiley Online Library
An elliptical subsurface crack under normal loading may experience mixed fracture modes
due to the non‐symmetrical geometry. This paper investigates the coupling of the modes of …

Effect of crack on bending process for S55c carbon steel with ultrasonic testing on zero degree probes

K Ali, D Rifai, JKS Paw, AN Abdalla… - Journal of Physics …, 2020 - iopscience.iop.org
Bending force and fatigue-induced crack is a generally assured trouble in industrial pipe line
achieving their original design life. An amount of high-profile accidents has been covered in …

Calculation of mixed mode stress intensity factors for an elliptical subsurface crack under arbitrary normal loading

J Alizadeh K, R Ghajar - … & Fracture of Engineering Materials & …, 2015 - Wiley Online Library
Normal loading causes mixed fracture modes in an elliptical subsurface crack because of
the nonsymmetrical geometry with respect to the crack face. In this paper, mixed mode …

[HTML][HTML] Surface energy evaluation using a modified 3-D M-integral for multiple surface cracks

JH Chang, JS Yang - International Journal of Solids and Structures, 2020 - Elsevier
In the present paper, we develope a 3-DM srf-integral to evaluate the surface energy that is
corresponding to formation of multiple surface cracks. The M srf-integral is formulated by …

Singular asymptotic solution along an elliptical edge for the Laplace equation in 3-D

S Shannon, V Peron, Z Yosibash - Engineering Fracture Mechanics, 2015 - Elsevier
Explicit asymptotic solutions are still unavailable for an elliptical crack or sharp V-notch in a
three-dimensional elastic domain. Towards their derivation we first consider the Laplace …

Analytical Solution for Elastic Analysis around an Ellipse with Displacement‐Controlled Boundary

J Yin, H Li, L Kong, J Cheng, T Niu… - Mathematical …, 2022 - Wiley Online Library
This paper presents novel analytical solutions for the analysis of an elliptical cavity within an
infinite plane under plane strain conditions, considering typical displacement‐controlled …